Cek kuota internet mentari dapat dilakukan jika pelanggan kartu perdana tersebut telah mendaftar paket super internet mentari. Paket itu ada pada kartu perdana mentari dengan harga Rp. 3000 dan pada saat kartu diaktifkan maka pelanggan akan mendapatkan bonus internet 100 MB dalam waktu satu bulan. Jika anda belum mengetahuinya silahkan (baca: Paket Super Internet Mentari).
Paket super internet
Jumat, 14 November 2014
Kamis, 13 November 2014
Review: Bang & Olufsen Beoplay A2 - the sounding purse (not for House lovers)
Shorty after the announcement of the B&W T7 also Bang & Olufsen announced their own vision of a true portable speaker with omnidirectional sound, a claimed 24 hours battery life, recharging of external devices and max. 180W!! sound... well, too good to be true? All those specs come with a price and this is 399$ or 349�, which makes the A2 even more expensive than the B&W T7 at least in the US because in Europe both cost the same. For the price of one Beoplay A2, you could also have an Infinity One
So let's find if the Beoplay A2 is really worth the extra and how it compares to the current line of portable Bluetoothspeakers particularly with regard to its direct competitor from B&W.
Within audiophile circles Bang & Olufsen always had a similar reputation to Bose. They were both smiled at by serious audio fanatics claiming both companies to produce overpriced piece of junk that doesn't sound good.
I am not so sure if these flamed companies in reality didn't manage to make the better products in the end, at least in regard to consumer friendly portable speakers.
The Beoplay A2 is the first portable Bluetooth speaker for Bang & Olufsen. They already had some stationary dockinstation models like the Beoplay A8, or a portable Airplay-Boombox Beolit 12, and I must confess that all of those that I have heard sounded pretty good in contrast to some "real audiophile" companies like Bowers & Wilkins, whose products never managed to thrill me much. Both B&W and B&O were priced higher than the competition, but those from Bang & Olufsen sounded much more exciting to me.
In the meantime I found an interesting blog from Bang & Olufsen's "Tonmeister" and sound designer Geoff Martin who shares some interesting insights into B&O's philiosphy of speaker design. Especially the videos 1 and 2 of how B&O designs their speakers is quite informative. Some of the mentioned approaches to optimize directivity do directly apply to portable speakers as well, that's why B&O obviously decided to make the Beoplay A2 an omnidirectional speaker, which is still quite rare among serious portable speakers as most simply rely on conventional design with fullrange drivers that have a strong directivity especially with treble. Instead of copying old and unfavorable speaker concepts, B&O obviously tried to improve on many problems of existing portable speakers and create something that really stands out of the crowd.
Unlike your hifi-stereo which most of the time will be fixed and maybe even equalized for a flat response on your exact listening position, portable speakers do profit from the possibility of being carried around and placed wherever you need them. But only speakers with a broad sound dispersion or even better full omnidirectional sound make sense to be placed completely free, otherwise you could just use your portable speaker in the same way as your fixed hifi-system and place it somewhere against a wall as far from you as possible to get the broadest sound dispersion.
My biggest complain about most portable speakers so far was that they only sounded convincing (if they managed to sound convincing at all due to the restrictions of their small sizes etc) exactly or close to on-axis. One extreme example was the Bose Soundlink Mini, which sounded very mature and far beyond its size regarding bass response. It didn't have much treble extension though as it already started rolling off above 12kHz, but when aimed directly at the listener the sound was still acceptable to one who liked Bose's typical bass accentuated sound tuning. Unfortunately the Soundlink Mini aimed away from the listener just slightly would already result in a boomy muffled mess. I always felt forced to turn the speaker around towards me whole the time, therefore I finally sold it, because I got bored because of this. Outdoor when together with some friends you couldn't just put it somewhere in the center, because only one person would get good sound, assumed the speaker was also tilted upwards to focus the sound to ones head instead of ones feet.
I already have some experience with different omnidirectional speakers like the Libratone Zipp, the Fugoo, or even the FoxL Dash 7 when placed flat. Such speakers have a big advantage over speakers that have a more focused sound and will only give you satisfying sound within their narrow sweetspot (as it was exactly the case with the Soundlink Mini). Thus my hope was big for the Beoplay A2 to offer some particular performance and stick out of the competition.
The Beoplay A2 comes in 3 different colours. It is hard to decide which one looks best, but I have seen all of them live, and I think the black one to be a bit too boring. The green one might be even looking best, despite being "green". I went for the grey one as I expected it to be rather silver. From the official images on the B&O site the speaker looked as if it was made completely of aluminium or at least it looked shiny, but in reality only the slim center part is aluminum, the entire rest of the speaker is just simple plastic. The grey one reminds me a little bit of a wall plug, as those have exactly the same color, thus resulting in a slightly cheap look. Although I prefer the golden colour of the aluminium body most, the grey color spoils the entire look. The green version has a nice reddish brown wrist-strap, which makes a pretty contrast to the hefty green colour. With black everything is black, which some might still like if they want it as simple as possible.
If you care about classy packaging, you will love the one from B&O. Open the box and you will immediately notice the premium tag to it, the interior of the box is lined with some black velvet compared to the simple carton/paper interior of the B&W T7 packaging at least with B&O you know what you are paying for. Inside you will find the speaker and a proprietary charger with some international plugs. Obviously the Beoplay A2 cannot be charged through USB which is a pity.
The speaker itself definitely looks and feels nice, the design is timeless and the fact that some of the grille-holes are covered gives a particular accent. But the A2 doesn't put over that kind of premium finish I was expecting especially regarding the price. An Infinity One feels much better and more expensive, maybe partly because of the uncommon ceramic-coating. The A2 design is quite minimalistic, you only get some control buttons at the top and some ports at the side, nothing else. There are enough companies that would willingly spoil the great design by spangling it with some huge logo covering half of the front or back. Kudos to B&O for adding just a mall sign at the top of the speaker and an even more minuscule one at the strap-knob.
The A2 is not very compact, it is about the size of the original Bose Soundlink and a bit bigger than the B&W T7. It has 1.3l cubature which puts it on par sizewise with speakers like the TDK A33 or the Infinity One with the only difference that the A2 is much slimmer and manages to pretend a much smaller size than the others which rather might appear clunky but otherwise use exactly the same space.
Together with the rounded edges the A2 is much easier to be packed away. Even though the T7 might have an overall smaller cubature, the A2 is nevertheless more convenient to transport, also because of the dedicated wrist strap. You can carry it around like a simple bag, or pinch it under your arm like some men's purse, it really feels comfortable like that, as there are no hard edges, and it is more secure to carry than an Infinity One, which is hardly to grab with one hand because of its thickness.
It is just not that easy to handle the Beoplay A2 bag-like. If you carry it with the handle and want to put it down, it would stand upright, but only at the bottom side are some small rubber feet, not on the shorter side opposite to the wrist strap.
If you want to place it on stone or concrete, you will probably quickly scratch that part of the speaker. It is a pity the desingers didn't add some additional feet at that shorter side too or simply some additional rubber coating at the edges. Also when carrying the speaker with the handle with the intent of placing it down, you will probably come in trouble with just one hand. The handle is at the short side, but the speaker has to be placed at the longer bottom side, when just hanging there upright it is not easy to place it without affecting the edge of the speaker somehow, not if you don't use the other hand to turn it around first. You could of course place it upright first, afterwards turn it around to the side, but as already mentioned, there is no protection or any kind of feet at the shorter sides, thus putting the speaker on harder surfaces for quite often might damage the plastic sides.
As the plastic covers are deattachable, I could even imagine them as spare parts, although I am not sure B&O would offer them separately, which is to hope, as the Beoplay A2 will probably fall over quite often thanks to its slim design. While the flat design might be favorable for packing or transport, it is not that ideal for secure positioning. The small feet at the bottom are less than 3cm apart while the speaker is more than 14cm high, or even 25cm if placed upright. It stands very wobbly especially on slightly uneven surfaces. Better to place some cushions all around, just in case it tips over thanks to some wind maybe...
I didn't manage to place it on my sofa for example. But also outdoors on the ground it is nearly impossible to make it stand. Even if you manage, it will fall over shortly after. You have to apply some tricks to make it stand on a lawn, or you can try to find a branch or something where you can let it hang.
Of course you might just lay it down flat, and it would even work like that, but you will cover one speaker side and lose one stereo-channel because of that. In a pinch it will be still usable, but it definitely sounds better when standing. I sometimes even had the impression as if the A2 was sounding better when standing upright, which might be a result from the tweeter being farther away from the reflecting surface unterneath, I cannot say for certain, but there is definitely a difference in sound depending on whether placed horizontally or vertically.
When turning the speaker on it will play an unremarkable click-like sound, if pairing is successfull a similar tone will be played, as well as when the speaker is turned off again. The tone is not very loud, and much less obtrusive than that from the Infinity One, the JBL Charge 2 etc. let alone the Pill XL. I can definitely live with such a kind of sound and prefer it over the virtuosic harp-playing you hear when you turn on the B&W T7.
Bluetooth connection is pretty simple, just keep the Bluetooth-button pressed for 2 seconds and it will jump into pairing mode, there is no additional NFC for even quicker pairing though. The A2 supports AptX if your non-Apple device supports that too and it can connect to 2 devices simultanously. The 2 devices must have been paired to the speaker at least once, so that they can both connect to the speaker at the same time. Otherwise you will have to break up the connection to one device if you want to pair it with the other one first. Unfortunately the A2 always wants to connect to the latest paired device. If you have more devices already paired to it, it will still always expect the latest one and ignore to automatically connect to the others except if you force the connection directly from the device. Volume control is mirrored between speaker and the connected device at least on iOS devices and the A2 offers 32 volume steps which are subdivided sensibly to allow for some fine volume control even at lowest levels, unlike all the recent speakers from JBL, Infinity, Beats etc...
Bluetooth connection seemed quite OK and stable without any hickups or drop outs but it was not class-leading. It was stable as long as the distance between speaker and streaming device didn't get too far, but my old Soundlink Wireless Music System managed to keep the connection at much longer distances, while the A2 had already lost connection from the same spot.
I noticed some stronger mobile network interference from my mobile phone. When the phone was placed closer to the speaker and started searching for a network etc, it was easily hearable through the A2. It seems as if shielding was not really well executed. Especially with the phone attached to the speaker for charging lying next to it resulted in repeated interference noises. Only switching it into flight-mode did help.
The A2 will charge external devices through the built in USB-port. The speaker has to be turned on for charging though. Some speakers can be turned off again and will continue to charge, it doesn't seem to be the case with the A2 though. Some will probably be missing speakerphone ability, the A2 just doesn't offer that. There is no track-control available through the speaker either, so you will always need your player at hand to stop or resume music, skip to the next track etc.
Now some technical data: The speaker is driven by a claimed 60W D-class amplifier with max. 180W power!!! Not sure how B&O calculates those values, but 60W would be extremely powerful for the given size, let alone 180W outperforming even larger speakers like the Bose Sounddock Portable, which only has 40W. The Infinity One has a claimed 25W amplifier only but will play louder with more bass than the A2.
There is a 3" fullrange driver together with an additional tweeter and a passive radiator at each side of the speaker. If you take the speaker grille off, you can see the "heart" of the Beoplay A2 quite well. It is interesting to spot that the drivers are slightly offset at the front and back part of the speaker, particularly noticeable with the tweeter which is close to the edge at the front, but closer to the center at the back. Also the main drivers are placed slightly differently for the front and back part of the speaker. I am not sure if this is for acoustic reasons or if it is pure coincidence due to some internal design limitations. But when looking at the speaker up front, you will have the front driver at the right side, while the non visible back driver will be left hand. The same goes for the tweeters. This setup allows for some increased stereo-separation which is pretty obvious on the Beoplay A2 compared to most other speakers. As you also hear the back drivers bleeding through to the front slightly, there will not only be a front/back separation but also left/right. More on that effect later.
When judging the sound of a speaker I think the first impression you get is very important. Playing the first tunes you might sometimes even get the impression that the speaker was broken (this is what I got when I first listened to the B&W T7) then slowly getting used to it to finally persuade yourself that it doesn't sound that bad in reality. Or you might start smiling after the first notes of a song, which was the case, when I tried the B&O Beoplay A2 for the very first time.
Let me begin with the fact, that the A2 is definitely not a "neutral" or flat sounding speaker. It has some colorations for sure. You will probably hear some humps with higher frequencies, some dips with mids and upper bass too, but overall sound is nevertheless pleasant and not fatiguing in any way, it is just that you will probably hear the sound to be sculpted quite a bit and not 100% faithful to the original recording. It is equally sculpted as what Bose usually does to make their speakers sound "better". But B&O did this with much more finesse and with more style. Listening to the A2 makes fun and wants to make you actually listen to your favorite songs again to hear how they will sound, while when listening to the B&W T7 I never wanted to listen for too long, as it didn't give me any satisfaction.
Overall I would roughly describe the sound of the A2 as treble-friendly with lots of deep bass, but without any artificial basst boost and slightly recessed mids at the same time.
Treble is very clear and detailed but boosted too much to be called flat and tending to sound a bit sharp on some tracks, but at the same time it hardly rolls-off even when listened exactly from the side of the speaker, which you will usually avoid doing under normal circumstances. But you could even put the A2 directly on the floor and listen standing from above without having a too strong treble loss, placed near the floor will also pronounce bass even more, which you may like or not, depending on the music. Of course it sounds clearest when listened exactly on axis (and with the speaker grille taken off, yes I did also some measurements to compare the sound with and without speaker grille, and the speaker grille definitely takes away some of the treble), but even when listened from less than optimum positions it will still sound clearer than many other speakers listened perfectly aligned. This is a 360� speaker, so you might even stand behind it and still get the same sound. Some might counter that nobody needs a speaker playing in all directions, I tend to contradict, because for a portable speaker this is the best you can get. Just put it anywhere and you should be able to move around without losing much quality. Try that with any Bose speaker, and come back again for discussion.
Mids sometimes seem to be covered a little bit. It is not that obvious when listenening solely to the A2, but switching between different speakers you will sometimes get the impression as if the singer was singing through a funnel. There is some coloration that makes the A2 sound quite a bit different than most other speakers pretending a "flat response", like the B&W T7 for example. It is definitely a matter of taste too, but I rather prefer the colored sound of the A2, than the lifeless and boring sound of the T7. B&O obviously tuned this speaker to make it sound pleasant instead of trying to tune it for the most neutral sound reproduction. As it is more demanding for a portable speaker to sound good at any position, I am quite sure that the intention behind the A2 tuning was exactly to make it sound good at many different places one might think of. Portable speakers are different, and B&O finally seem to be the ones who really figured that out, while other companies try to translate their common old school Hifi-knowledge into portable speakers and fail.
Bass is the other more impressive part of the A2 as it reaches very deep, maybe even deepest of any comparable speakers I have heard so far. I heard clean bass notes down below 50Hz, but not only as slight hints of bass with a much lower amplitute, but real bass. Most other comparable speakers hardly manage to reach 60Hz. Of course you won't get any subwoofer-like bass at higher loudness levels, as the Beoplay A2 will also reduce bass to some degree as soon as you start raising the volume, it is just the same as with all the other small portable speakers out there, no particular magic going on here. But up to medium volume you will get a much more full-bodied sound than from any of those (including Bose Soundlink III, Infinity One etc). At the same time bass from the Beoplay A2 is not overly boosted, it is just deep, so it should still sound very natural for those who do not like any artificial bass. What surprised me a bit was that B&O decided not to include any form of loudness compensation. Usually B&O are known for optimizing the sound with their own loudness curves, not so with the A2. It will sound equal at the lowest setting, as it will at medium volume. It is just that bass is starting to get more and more reduced the higher you turn it. Unfortunately at really low levels, let's say the first notches, it will sound a bit too flat for my taste. You have to turn it up some more notches to get a satisfying amount of bass. I found the Sony SRS-X3 to sound more impressive at comparably low levels, it was only at higher levels, where the advantage of the A2 became obvious.
As the bass has no particular boost, you can even try positioning the Beoplay A2 near a wall or corner (I would avoid doing so with most Bose speakers). You will lose the whole 360� feature like that, but you can pronounce bass even more without making it drone, because the boomy frequencies above 100Hz are kept relatively conservative. With some particular placements you can really get the impression as if you were listening to a much larger system, while with other placements the A2 might also sound a bit thin or flat, as I would call it, because it never sounds tinny, but sometimes the bass is not as pronounced as other times. The A2 seems to be more sensitive to placement in regard to bass response than other speakers. I am not sure what is the reason for that, but the A2 can sometimes sound either big or small, depending on where you place it or where you are standing. I assume room modes are to blame for that. The A2 has lots of bass down to 50Hz and even lower, while many rooms have a resonance between 50-60Hz. In such a case, all the deeper part of the bass will get cancelled out, if the speaker or listener both catch a negative room-mode. Other speakers have more upper bass and won't even reach that deep, thus will probably sound more full-bodied, as the room won't have that much influence on the upper bass frequencies, this is just an assumption though, but I got this impression when I was listening to the Beoplay A2 and JBL Charge 2 side by side. Sometimes the JBL sounded considerably fuller with stronger bass while the A2 standing right beside left a much flatter impression. Other times the A2 had a huge advantage where you could hear deeper bass notes, that were simply not present on the JBL Charge 2 regardless of positioning. I was nevertheless quite surprised to hear how nice and natural the A2 sounded outdoors standing completely free, as it managed to sound more impressive than inside when placed badly.
What is a bit missing on the A2 is some stronger upper bass punch that you will notice with bassdrums. It seems to me as if the A2 was simply relying on its deep-bass impact, but falling a bit short of the stronger punch you get when there might be some slight upper bass ephasis. Bassdrums often seemed to miss attack, instead you could more hear the lower decay part, thus overall bass felt a bit flabby.
This deeper bass tuning comes at a cost though. First I didn't notice it that much, but the more I listened to the A2 and the more different tracks I tried, the more it became obvious. The A2 can suffer from some considerable bass-distortion with particular recordings. The overall sound remains pretty clean even at maximum volume, there is neither any kind of intermodulation distortion nor crackling etc. everything is well under control, except bassdrums which can start to drone already below half volume. I listened a lot and nailed it down to mostly electronic drums, which can cause problems on the A2. These typcial housekicks you know from the legendary TR-909/808 drum machines, which are still so popular nowadays (or rather samples or clones of them) can make the A2 sound really bad. The problem becomes obvious from the 15th volume step upwards, which is one step below half volume. Some house tracks with really punchy bassdrums will start to distort with a sound similar to "whoop, whoop", funny thing is that it won't become much worse anymore at even higher levels, it is just this one step below half volume where everything starts to break apart, below that step everything sounds clean, even the strongest kicks will remain deep and profound.
If you like Housemusic or other forms of danceable genres, you won't be happy with the A2. Many of my favorite tracks sounded plain unlistenable when I tried turning them past half volume. The problem is that you will find these kind of electronic bassdrums in most other modern music genres, starting from Hiphop to Smoothjazz, Pop, R'n'B and even "Deutsche Schlager". If a track is prone to this problem, it won't satisfy when listened through the A2. I wouldn't complain if this issue appeared at really high levels only. Many other speakers have similar problems, I noticed that both Soundlink Mini and the Soundlink III sometimes also tended to produce some kind of bubbly bass-artefacts on particular tracks, either with bassdrums, or even with bass-notes, but those only appeared when the speaker was closer to its limits. They could then go away at even higher levels as bass was reduced stronger or dynamics compression kicked in making this problem less obvious. But in case of the A2 this already can happen at half volume, which is really sad because it doesn't become better, nor does it become much worse at higher levels. If you hear it once, you will catch yourself looking for it in any other new track. Many of my favorite tracks from Brian Culbertson, Jonathan Fritzen, who seem to have a special liking for electronic drums simply sounded bad through the A2, particularly some of Brian's smooth ballads from his album "It's On Tonight", where he uses lots of fat drumkicks even on his slowest tracks.
I don't think that this is real driver-overload. I rather think that this is a badly tuned DSP or compression algorithm. The A2 seems to subdue any louder peaks of a bassdrum quite efficently but at the same time the decay-part of the bassdrum is raised too high for the driver at the given loudness level. Especially with House music this algorithm will result in music sounding mushy without any drive the punch of the kickdrums compressed away nearly completely. When listening to the same songs through the JBL Charge 2 or Infinity One there is also some noticeable compression going on, but it sounds more musical still being able to keep most of the attack of a bass-drum. If you like House and want higher volumes, you should avoid the Beoplay A2. It just doesn't sound good, it rather sounds good with acoustic music, smooth music not too heavy on bass etc. I would also avoid overly bright recordings as the A2 is pretty bright sounding on its own.
Of course due to the back/front driver layout sound can appear more diffuse on the A2 at times, because half of it is always projected backwards away from the listener. Songs with lots of stereo separation may sometimes sound as if you were listening to a speaker from the back. If a track has some instruments mixed to the far left while others are placed to the extreme right in the stereo-image, half of them will sound more distant, because you will hear them rather as indirect reflections bouncing off your room than the directly hitting sound from the front drivers. I was nevertheless quite amazed by the openness of the A2's sound. It is airy and spacious and manages a hint of stereo separation too, unlike most other similar speakers. The stereo separation you get from the A2 is not distinct, rather more washed-out but still discernible so that it manages to add lots of ambience to the music. With the speaker placed closer you will not only get obvious left/right separation, but also a kind of front/back separation which manages to spread the sound better inside a room and is still noticeable from some distance too.The A2 tends to sound much bigger while other comparable speakers rather resemble a single point-source soundwise. With the A2 you can get a bit of an impression as if some "soundcloud" was floating around the speaker, this is remarkable and much more satisfying than the usual mono-sound you get from most single cabinet "stereo" speakers. Even if the sound of the A2 will appear a bit washed out it is still preferable than an ordinary speaker listened from an angle which will also result in a washed out sound but still coming from a single focused point source.
Of course I wanted to prepare some audio recordings, so that you could compare the sound of the Beoplay A2 with the B&W T7, but this particular sound characteristics of the A2 did cause some problems. When I tried to record the Beoplay A2 in my usual room and compare it to the B&W T7 the A2 sounded really strange when directly compared. With the recording I got exactly this washed out and distant sound as described before, but much more pronounced and not sounding like it was in reality. Therefore I wanted to try some binaural techniques for my further A2 recordings and didn't do the recordings in my usual recording room, but rather in our living-room which is much larger and has a much more natural acoustics, unlike our garderobe which aborbs lots of frequencies.
First I would like to show you the direct comparison of both B&W T7 and B&O Beoplay A2 with the same old recording procedure I usually did with all previous speakers. You will probably notice that recorded like this the A2 sounds "different" to put it gently:
And now a kind of "live"-video comparing both again, but this time recorded binaurally with me walking around the room demonstrating the change in sound when not listened exactly on axis. I think that this recording does the A2 much more justice than the previous one and it shows better how the speakers interact with the room acoustics.
With the Infinity One still being one of the most interesting speakers around it shouldn't be missed in this comparison, that's why I prepared a comparison of all 3 speakers, but this time recorded consecutively with me sitting exactly at the same spot and the switching done in post processing. Thanks to my friend again for offering me his gadget one more time for this test:
I think it is obvious from this recording which is quite close to the sound I was hearing in real life, that the bassdrum doesn't sound right on the Beoplay A2, instead of some punchy "plopp" like on the other two speakers you rather get a kind of "poww" which seems as if the speaker was trying to melt the synthbass sound together with the bassdrum.
To demonstrate this distortion effect better I prepared another video, where this problem is non deniable anymore. I also mixed in a little bit of the JBL Charge 2 for comparison how it should sound in reality:
Now let's have a look at some frequency response measurements. Similar to the audio recordings the measurements were not that easy to achieve for the Beoplay A2 as half of the sound is always going backwards, therefore you will always have to deal with some stronger room-reflections if not performed inside an anechoic room.
First let's see the entire volume range of the speaker shown with every 2nd volume step measured on-axis from 50cm distance in my usual recording room (smoothed with 1/6 octave). Red is maximum volume and blue is the last distortionfree volume step, you can see that up from there bass is reduced considerably with any higher volume step. Also a big frequency dip between 2.5kHz - 6kHz is quite noticeable here:
Maybe we can try to find out thanks to the measurements what's going on with the obvious bass distortion at levels above half. Here I superimposed the measurements for the volume steps 12-20 with 2 steps increment. Above you see the fundamental, below the curve for the total harmonic distortion. The most pale curve is the lowest volume step, the strongest curve is the highest step. I think it is pretty obvious that there is some increase in THD from the 14th step upwards within a wider range of frequencies (the stronger distortion below 60Hz is pretty normal for such small speakers) but it seems that the one single peak at exactly 500Hz which suddenly starts increasing with the 14th step is the one we were hearing in the examples above:
If we try doing the same for the B&W T7 we can see that although the distortion increase seems higher overall (especially with lower frequencies) it remains more consistent across the whole frequency range without such a strong peak at one single frequency:
As the A2 is an omnidirectional speaker let's se how it measures from different angles. In the following graph you can see the measurements for the front side, the back side, with the speaker turned around 45� and 90� (90� means it was standing faced completely sideward towards the microphone). There is some treble-loss at 90� which is to be expected, but at 45� treble remains pretty much the same. I am not quite sure why there is such a strong difference between the front and back measurement though.
To minimize room influence I also took some close-up measurements from 10cm. I measured the main driver, the passive radiator and the tweeter on-axis and then averaged the responses. In the following graph you can see the average curves for the medium volume level from both the Beoplay A2 (red) and the B&W T7 (blue). I think it is pretty clear that the B&O Beoplay A2 despite having some inconsistencies above 2kHz extents much deeper and much higher at the same time than the T7. The obvious treble boost of the A2 is still not to overlook either:
To sum up everything, I would say that the Beoplay A2 could have been a game changer for the entire portable Bluetooth speaker market. Depending on where you live it might appear a bit expensive, but in Europe it costs hardly more than many other competing speakers like the Bose Soundlink III for example. Although the sound of the A2 is not flat in any way it is nevertheless pleasant to listen to and impressively tuned in most regards. The 360� sound is one of the top-features for sure. Just place the speaker anywhere and you should still get perfect sound regardless if the speaker ist standing below, above or somewhere at the side. There is no need to place it at ear height or turn it around to aim it at you like with the majority of portable speakers. There are other speakers which claim 360� sound like the Libratone Zipp for example, but it nevertheless had quite a strong vertical directivity and sounded considerably more muffled when not standing at ear height. From memory the Libratone Zipp sounded much more average being even more colored due to some thin sizzling treble than the B&O and missing that impressive bass response despite being much larger and much heavier at the same time.
The design of the Beoplay A2 is classleading, handling is simple although you will have to fight with careful positioning because the speaker doesn't stand very stable and appears a bit wiggly. But there are 2 complete dealbreakers which hinder the Beoplay A2 to become the absolute top model currently. One of them being the obvious distortion with many modern recordings which can already start at half volume, the other one the disappointing battery life at higher levels. The distortion could be maybe even fixed with some future update and some finetuning of the DSP, as it rather sounds like some clumsy limiter/compression problem, because it just jumps in from one volume step to the other slightly below half volume but doesn't really become worse at subsequent higher levels. B&O usually applies lots of DSP tweaking to optimize the sound of all their speakers. I could be wrong though as the A2 measurements show some obvious distortion-issue at 500Hz, which might be the reason for the heard problems. But the battery issue won't be easily fixable. The amplifier is either too inefficient or the battery too weak to be able to deliver enough power for higher loudness levels. Speaking of high levels: the A2 might be "loud" for some, but it is definitely not the loudest speaker out there. There are tons of other similar even cheaper speakers that can play considerably louder but without any distortion or compression problems.
On the one hand I was quite impressed with the performance of the A2, I really wanted it to be THE SPEAKER to outclass all the others, but on the other hand I became quite disappointed when I noticed the issues it was suffering from. If you just want some background music at lower levels, you might be quite happy with the A2, but I found that a Sony SRS-X3 managed to sound more full-bodied at comparably low levels, because the A2 doesn't apply any loudness compensation thus tends to sound a bit slack at its first volume steps. You need to turn it a bit higher to really make it come to life, but already at half volume you might come into trouble especially if you like pounding bassdrums, because they will start sounding like farts on the A2. For such tasks there are also better and cheaper solutions out there, which can make the A2 even sound funny directly compared. The A2 remains something like a "specialist" for me, it sounds good with some kind of music from that level upwards and up to that level... But I would prefer a speaker which perfoms well with all genres at all levels. I know this is quite a challenge for a small portable speaker, and the A2 is pretty close to that, just fix this nasty distortion problem and squeeze out a bit more of battery life at higher levels and this speaker would be the "king".
+ great classy design
+ available in 3 different colors
+ flat compact body with soft edges
+ full-bodied and detailed sound
+ bass reaching very low but without any unnatural boost
+ 360� sound with hardly any treble loss from most angles
+ good battery life at low levels
+ mirrored volume between speaker and streaming device
+ simultaneous Bluetooth connection to 2 devices
+ charging of external devices
+ AptX support
- obvious distortion on kickdrums already at half volume
- very disappointing battery life at high levels
- no battery level indicator
- no track control possible through the speaker
- won't automatically connect to other than the latest device
- bad shielding against mobile network interference
- no loudness compensation thus may sound thin at lowest levels
- treble may appear a bit harsh sometimes
- bass is missing some punch
- mids can sometimes sound covered
- doesn't stand very stable
- may get scratched easily when placed on stone, concrete etc.
- feels slightly plasticky
- expensive
Rabu, 05 November 2014
Review: Bowers & Wilkins T7 - premium sound at a premium price?
Just when I wanted to calm down a little bit after all those reviews and comparisons I had done lately the British well known premium company B&W unexpectedly announced their first portable Bluetooth speaker, the T7. Of course the specs and given data was looking pretty promising and with 349$/� the T7 was priced above the current competition like the Bose Soundlink III, the Infinity One, or even the Beats Pill XL, which all cost around 299$
I became quite curious to try out this speaker and hear if a serious company like Bowers & Wilkins managed something really outstanding. Meanwhile I got the T7 and put it through some tests and measurements, so let's have a look if the T7 was really worth the long wait to finally get a portable speaker that stands out of the crowd.
The speaker comes inside a nice small box. With exception of the speaker and the power adaptor (15V 2A) together with some additional international plugs, there are no other accessories included. Not really generous for a product costing considerably more than all the competition, as they could have included some carrying bag, or at least some simple cleaning cloth to keep the treasure clean.
Designwise the B&W T7 definitely tries to set itself apart with some yet unseen design-element: "the Micro Matrix".
B&W states quite proudly that this structure is vital for the good performance of this speaker because it provides rigidity and reduces unwanted vibrations while keeping weight to the minimum. To me this rather seems like some simple marketing blah. It just looks like wasted space surrounding the actual speaker-box. The size of the speaker could be certainly kept down if the whole honeycomb structure was just left away. The real speaker element is a closed box inside that sticks out of another empty box contaning the Micro Matrix, and I don't see any purpose for it. I think they just wanted to make it look funky, as it shines in a funky way when put against a light source, for me it rather resembles some design element taken out of a 70s Scifi movie, it might even have something baroque to it with a bit fantasy. To cut it short, the design is not my thing, and although build quality is top notch, it doesn't look too sturdy for real portable use. The speaker has sharp edges all over, the transparent plastic surrounding the Micro Matrix is shiny and prone to scratches, the metal grille at the front and back is exposed, and if the speaker falls over, the grille will be the first part to get scratched. The only clever choice was to use rubber for some small part of the speaker. Indeed there was much fuss about the rubber element and how important that was either for keeping vibration down. In reality most speakers with passive radiators apply some kind of rubber to the bottom to avoid any rattling etc. So I am not quite sure why B&W's rubber should be exceptional compared to other rubbers.
Enough ranting, let's talk about the user interface and the features of the T7. All buttons are hidden below the above mentioned "special" rubber. They are not really well visible as they are just slightly elevated symbols with the same black color as the entire rest of the rubber, as this rubber is so special and unique, it comes only in black, therefore no other color-options are available for the speaker, just pure elegant black.
On the right side of the speaker is the main power button. When I unpacked the speaker it didn't want to turn on by any means. I had to attach it to mains first, to get it come to life. There seems to be a similar protective circuit inside like on many similar Bose-speakers which deactivates the internal battery after a particular time of non-usage. As soon as I attached it to mains the speaker woke up and everything lit up. I was welcomed by some cheesy harp-melody playing. Another short melody will be played when the speaker has successfully connected through Bluetooth.
Usually you have to keep the power button pressed for about 2 seconds to turn the speaker on, at the same time the battery indicator above will light up to indicate how much charge is left. The T7 has 5 dedicated LEDs symbolizing the charging level. When the speaker is attached to mains and charging, they will light up one after the other, until all are LEDs are lit to symbolize a full charge. Charging seemed pretty quick, but the speaker had some residual charge as the charing procedure already started with the 4th LED flashing.
When in battery mode the LEDs will go out after some seconds, but you can always press the power button shortly to check how much charge is left. To turn the speaker off completely you have to hold the power button again for about 2 seconds. On top you find the volume-buttons, the Bluetooth-button and the track-control button. This acts for starting and stopping music when pressed once, double press will take you to the next track, tripple press skips backwards.
Volume control is mirrored between streaming device and speaker (at least on iOS devices). The T7 has 32 dedicated volume steps, and they are fine enough at lower settings to allow a sensitive volume control without too rough jumps.
Bluetooth pairing seems a bit basic though. The speaker always tries to connect to the latest paired device but doesn't automatically want to connect to other already paried devices. When 2 different devices have gone through the pairing procedure the T7 can be paired with those simultaneously so that you can switch streaming from one to the other without any additional pairing needed. But after power-on the speaker will still only connect to one of those devices, even when both are present at the same time. You have to force a manual connection from the other device every time.
Basically that's all on features. There is no NFC, no charing of external devices, no speakerphone. But at least there is a hidden "Reboot" at the back in case the speaker might hang once or behave unexpectedly.
Because there is not that much else to say about the T7 anymore, let's directly jump over to the sonic qualities,... or better the lack of.
I must confess I was never a big admirer of B&W speakers. I cannot say much about their professional gear and their classic speakers like "Nautilus" etc. But all their digital consumer stuff sounded average to me. The Zeppelin, the Zepplin Micro etc, none of them really impressed me much and I wondered why so much fuss was being done about them. When the T7 was announced I had really big expectations and was eagerly reading every single press release and hands-on. But none of the "reviews" so far mentioned the sound with any words. I mean what kind of review is this, that doesn't deal with the most important fact, the sound quality of a speaker?
The T7's acoustic core consists of 2 full range drivers and 2 opposing passive radiators driven by a 28W amplifier, a pretty basic setup nowadays and nothing really special as so many current speakers have the same or a similar speaker array, thus most of them suffer from the same basic problems especially in regard of strong directional treble dispersion, loudness issues, intermodulation distortion etc. Either B&W has applied some magic to overcome these things, or they just talk big, because the T7 doesn't seem to improve on any of the existing aspects, so let me tell you that the T7 is the most unimpressive and overpriced speaker I have heard so far. I had tried dozens of different portable speakers during the last years. There has been much progress on the market when looking back now, but Bowers & Wilkins seem to have overseen all the competition that is available. It is just copying other speakers without adding any noticeable improvement.
The T7 might have been a pretty nice speaker if it had been announced 4 years ago, but today there are so many cheaper and better sounding alternatives, that it is really embarassing to see a company with such a big and important name couldn't come up with something more serious. There is lots of raving about the qualities of the T7 with its "highly advanced audio technology" on its dedicated website with statements like "we�ve used every technological trick we know to make sure that T7 packs an amazing sonic punch for such a little speaker". In reality the T7 sounds below average compared to what is available now.
A Creative Soundblaster Roar is exactly the same size costs less than half of the T7's price and sounds at least as good if not even better, but packing more features without all the Micro Matrix nonsense. Although I was not impressed much with the Roar either, I prefer it much more over the T7, even if both cost the same, I would probably still choose the Roar over the T7. A more extreme example is the JBL Charge 2, which rather resembles a kid's toy than a serious speaker. But putting both T7 and JBL Charge 2 side by side, the T7 starts sounding more like a kitchen radio than a 350� premium product. The Charge 2 is not only smaller, lighter, but has the ability to recharge other devices, has speakerphone and a really balanced but punchy sound at the same time which simply blows the T7 out of the water, let's just forget about all those distortion-issues for a while.
The biggest problem of the T7 is the directional sound coloration that becomes pretty nasty and makes the speaker sound just ugly if not listened exactly on axis. Let's assume the T7 might have the intention to be a very flat and neutral sounding speaker, even if it was, it nevertheless sounds boring with a tendency to sound honky and harsh. If we consider the Sonos Play:1 also being a flat and neutral speaker, both are worlds apart regarding sound. While the Play:1 sounds serious and ambitious, the T7 sounds... like a kitchen radio.
Stereo separation is nearly non-existent except if you put your nose against the front grille, but from 1 meter distance you can hardly hear any left/right difference anymore even with the strongest effects like those from Pink Floyd's "Money".
Bass is claimed to reach below 60Hz on the T7, and while in reality you can even hear "something" at 40Hz when feeding it with some sine-tones, you won't notice any deeper bass extension when music is being played, it just sounds anemic. The T7 might even have a slightly deeper bass extension than the Soundblaster Roar, a thing I was always complaining about, but the Roar compensates for this with an overall more friendly and pleasant tuning. You have to listen really close to hear some advantage in lows from the T7. But bass is the lesser problem, as there are definitely enough purists who will always prefer less bass, or maybe they call it "tight bass" or whatever, when the other rest of the frequency spectrum is perfect, but in case of the T7 it isn't. The character of the drivers is to blame here, as those seem to have an extremely narrow sound dispersion, which is not uncommon for fullrange drivers. If you put the speaker directly in front of you and start moving the head slightly to the left and right, you will already notice how either the left or the right driver starts dominating, you seem to be leaving and entering the sound cone of the other driver. Move further to the side and the sound becomes dull and unpleasant because strange humps in the mids start appearing, while treble is getting recessed at the same time. Listened from a less than optimal position results in a sound that reminds me of a bad encoded MP3 file, or... a kitchen radio. In my opinion a no-go for a portable speaker, which you will hardly have the chance to always aim directly at you. The T7 needs an elevated positioning, a fact that finally made me distance myself from all Bose speakers, as they equally suffered from an overly directional sound with treble that quickly started sounding muffled when you were not listening exactly from within the sweet spot. But at least Bose speakers were otherwise able to raise some fun, the overly boosted bass of the Soundlink Mini which is even reaching deeper than that of the T7 is quite unique for a speaker less than half the size of the T7. I wonder if Bose used some better Micro Matrix to achieve that performance, or maybe it is because they simply didn't use it at all?
I am not so sure if the Micro Matrix doesn't even have a negative effect on the performance of the T7, because I noticed some stronger resonance with the cabinet at particular frequencies when playing some sine-tones,... so much for the "Micro Matrix"! I might try again to check the exact frequencies if I am bored.
One advantage the T7 might have over many other similar speaker is overall loudness. It is a pretty darn loud speaker, although when looking or listening close in reality it has 2 different maximum volumes: the first one that is still listenable and the other one which is just too much and will hurt your ears. The T7 can play very loud on its maximum setting, but it dials away any already recessed bass and starts sounding extremely unpleasant with mids dominating and eating all the rest of the spectrum. Apart from the completely missing bass, there is not much dynamic compression noticeable and distortion is pretty well under control too, but outdoors I would certainly be embarassed to turn it up to the maximum and have all others hear how it sounds. A TDK A33, which could already be had below 100$ sounds as loud, but manages to retain much more of its bass punch, and doesn't change its frequency spectrum to sound like a buzzer at higher volumes. If the entire volume-range with 32 steps is taken into account, I would say that the T7 is still listenable at step 20 or maybe 22, but the whole third above that is just useless, I doubt anyone would like to listen to the speaker when it sounds like that. I even think a Pasce Minirig would sound better than the T7 nearly reaching the same volume.
If this is the so called "premium" sound, I think I rather stick to "consumer" sound, or the "low-grade" sound of my JBL Charge 2. The JBL Charge 2 might not play as loud, but it still sounds good at maximum volume.
I currently don't have the Infinity One at hand, which would probably be a better match for the B&W T7 despite being 100$ cheaper, but even the smaller and 200$ cheaper JBL Charge 2 manages to easily outperform the T7, that's why I prepared a video showing the sonic differences between both. The JBL Charge 2 definitely loses in overall loudness, but even at maximum the track is still recognizable as such, while on the T7 it sounds as if it was being processed through a chopper.
When comparing both B&W T7 and the Creative Soundblaster Roar, the differences are harder to discern, you really have to listen closely to distinguish one from the other, but the harsher mids-response of the T7 which makes it sound a bit resonant during some parts, or kitchen-radio-like how I would call it, reveals which is which. At maximum volume the T7 might still be a tad louder than the Roar, but nevertheless the Roar sounds more convincing with more bass-punch, and a rounder sound overall. There is only some slightly pumping noticeable from the Roar at top volume, making the treble seem to fade in and out during some parts of that track, this is where the TDK A33 might jump in, as it can play louder than the Roar and without any pumping-effects, thus easily outperforming the T7 too, unfortunately I didn't have a TDK A33 at hand for a direct comparison:
I also made a quick and dirty binaural test-recording of both the B&W T7 and the JBL Charge 2 the same day I got it. You probably have already seen my first binaural recording experiments I wrote about here. This wasn't meant to be published (I mean look at the mess inside my cellar), but I don't want to hold it back, as I am not sure when I will have time to prepare better recordings. If you were wearing headphones, you should be hearing more or less what I heard:
Now let's have a look at some frequency response measurements. As I don't have any anechoic chamber at home, we have to deal with the in-room response here which is what you would hear, when listening to this speaker in this particular room from 50cm. But as all my measurements are done in the same room with exactly the same setup, they are still directly comparable, you just have to take into account that they are not siginifcant on an absolute base, but in relation to another speaker the reponse differences should become obvious.
First let's have a look at the entire volume range of the T7 with measurements for every second step:
I think it is obvious that on axis the T7 measures realtively flat, but it is also visible that bass starts rolling off below 100Hz already with some extension down to 40Hz which in reality is hardly noticeable at all. At levels close to maximum there is a mid-boost visible between 300Hz and 1kHz, which makes the speaker sound that harsh as most bass is already dialed back below 170Hz at the same time.
To have a comparison I chose the JBL Charge 2 as direct competitor, a smaller and much cheaper speaker with unneccessarily even more features than the T7. These are the responses for the T7 at a medium volume level taken from different horizontal angles. You can see the measurements on axis (0�) and from 10�, 20� and 30� here:
The same for the JBL Charge 2:
If we average these reponses for both speakers, we get the following curves which should give you a rough idea about the actual sound. The JBL Charge has better extension in both treble and bass, despite the fact that the T7 might reach even lower, they both meet at 60Hz with more than -15dB fall-off thus anything below that will be hardly hearable in reality:
I think it is already pretty obvious if I like the T7 or not, therefore I would like to spare myself a final conclusion, but I will try one nevertheless.
The T7 per se is not a "bad" sounding speaker, it is just that it isn't a particularly good sounding one either and doesn't stick out in any way of the overcrowded mass of similar speakers, that are either smaller, cheaper or both. The high possible loudness might have been one advantage over all the others, but the T7 is not quite usable at its maximum setting, because it just sounds ugly when cranked with the sound fallen apart completely, although still nearly distortion-free as the only plus factor.
Maybe I wouldn't complain if Bowers & Wilkins tried to join in between the competition with a reasonable price, instead they went for the "premium"-tag without being able to deliver any premium sound nor premium product. Some might definitely like the baroque design, but as a portable speaker neither choice of materials nor choice of forms make it suitable for outdoor use on the go. If I wanted to use this speaker at home only, I would go for something much better sounding, as the T7 cannot substitute any serious hifi system not to mention the lack of any stereo separation. I think I could name at least 5 or 6 better and cheaper alternatives to the B&W T7, but as sound is always a matter of taste too, I let all others make their own decision.
Funnily 2 days after the announcement of the T7, also Bang & Olufsen announced their first portable Bluetooth speaker, just as if they wanted to answer: hey folks, now have a look at our vision of a portable Bluetooth speaker. Let's se if B&O managed, so stay tuned for a comparison of both soon.
+ looks might appeal to some
+ nice build quality
+ AptX support
+ dedicated battery level indicator
+ track control directly through the speaker
+ mirrored volume control with iOS devices
- pretty average sound
- very directional treble dispersion with strong coloration off-axis
- not very powerful bass with roll off already below 100Hz
- maximum volume setting not usable due to harsh and unpleasant sound without any bass
- wasted space around the actual driver-unit making the speaker unnecessarily bulky
- cheesy status and confirmation melodies
- not really portable without any additional protection
- extremely overpriced
- no additional features (speakerphone, charging of external devices...)