Amplifier b&w cm1 review
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Little Help......B&W CM1 or B&W 705
Treble quality is better than most metal dome Bowers and Wilkins ' systems, but there is an occasional trace of midband boxiness. Refined floorstander hits almost all the right spots on the button. The fourth model, the CM9, is the top-dog in the CM range and physically the largest model.
It has the most extended bass and given a suitable amplifier, will play the loudest. This makes it perfect for those looking for good sound quality delivered at realistic sound levels. It also boasts a level of fit and finish that is distinctly high end. To put it in context, the CM range — which slots between the series and the highend s — started life as a single model, the CM1, an impressive quality compact which made up for its lack of cubic inches with better-than-average bass extension for the size and necessarily low sensitivity as a result.
But it had limited trouser-flapping ability and needed a lot of power to have any useful output. Hence the range now extends to two compact two-ways, two floorstanders, two centre speakers and a subwoofer. In contrast to the CDM range that preceded the CMs, the tweeters are fully enclosed and the enclosures are rectangular boxes, which means they look somewhat simpler and cost less to make. But this doesn't mean the designers have not addressed the aesthetic issues.
The black gloss finish is first-rate, with excellent detailing and the standard of presentation really is the icing on the cake. This reviewer is not very enthusiastic about the silvery rings around the drivers, or the fact that the larger units have different colour cones for the midrange and bass they use different materials , but the speakers are supplied with ultra-slim grills that attach magnetically to the front and effectively cover the working parts, without significantly detracting from the sound.
The designers have opted for a narrow enclosure, achieved by using two small diameter bass units in parallel instead of a single larger one. The narrow baffle has the advantage of widening the listening window, so that several people can listen at once without a noticeable loss of image focus. A single larger bass unit would have had the opposite effect, namely narrower imagery and a more restricted listening area.
To ensure stability, the speakers come with some plain rectangular plinths, which usefully extend their footprint. You also get carpetpiercing spikes and hard, round-section feet as an alternative, with enough adjustment available in each case to take care of uneven flooring.
It's a great-looking package, with the emphasis on elegance and practicality compared to the series, which look superficially similar, the CM are better specified. For example, they are fitted with longer voice coils and bigger magnets which translate into greater power and less distortion. Cabinet bracing is also improved, and the cabinet walls are covered in real wood veneers, which helps stiffen the enclosures, in much the same way that bread helps stiffen a cucumber sandwich.
The veneers are also reflected in superior finish. The CM9 doesn't need to be driven hard to perform well and it will cope with more power for longer should it be required and when the amplifier allows. We haven't see the response plot, but most of it probably lies below the line, between 0 and -3dB, with the output holding within 2dB over a ten degree vertical arc and 60 degrees horizontally.
Impedance is nominally eight ohms, but dips to three ohms, which means it is best thought of as a six-ohm load, though the 89dB sensitivity means that you shouldn't need too much power to get a good result. The main test amplifier was a Krell fBi, which can deliver watts per channel without breaking a sweat, which is more than sufficient horsepower for any reasonable use.
But in a brief outing with a high-quality watt integrated amp, the Denon PMA-SA1, even this reduced power level was sufficient to propel the CM9 a long way, with no danger of hitting the end stops in a room which is more than eleven meters long. This is not a hard loudspeaker to drive. You wouldn't expect a modern Bowers and Wilkins to be far from tonally neutral and the CM9 doesn't disappoint.
This is palpably a very accurate loudspeaker with a full, but well contained bass and a treble quality that has come some way from the occasionally thin, edgy quality of some earlier generations of metal dome tweeters. It's not that the company's speakers were particularly edgy, but there was something about their tweeters and the slightly antiseptic way the treble was framed as a whole, that somehow underlined the high frequency output.
In part, this is because it is no longer possible with this loudspeaker to hear the treble as a separate entity, independently of the bass and the midrange.
The Kevlar FST midrange unit plays a part here by boosting energy in the middle and upper midband, the region just below where the tweeter takes over.
The result is a loudspeaker that is obviously smooth and in control, but is also capable of delivering real surprises when the occasion demands, one of which was playing a CD of wind music, a new Naxos title called Passaggi , which is scheduled for review in choice cuts next month.
The exotic woodwind textures featured on this disc were beautifully handled, with a palpable feel of the player's breath energising the instruments. In track eight part II of Nebojsa Zivkovic's Tales from the centre of the earth the music has a tremendously exciting rhythmic pulse and here the CM9 brings a powerfully tactile quality and bite to the proceedings. We did notice a degree of interaction between the speakers and the amplifiers though, which in the worst case tends to induce a small, but noticeable amount of colouration and a degree of boxiness in the midrange.
The bass is perceptibly warm when we used it without the foam ring or plug in the reflex port they're supplied separately, with the advice to use them if the speakers are placed close to the wall behind. Generally the bass breathes better and gives a greater impression of differentiation in the depth plane, if some space is left behind the speaker and the foam is not used. This is a first-rate newcomer, easier and more relaxing than some previous Bowers and Wilkins, with a more expansive sound and a better-integrated treble.
The speaker does offer a wide listening window, which is not just limited to a point immediately between the two speakers. It is quite transparent, though, and should be used with clean-sounding electronics, if you don't want to excite the slight residual boxiness identified above. North America. Home Reviews Audio Visual. Our Verdict. For Tall, elegant, expressive midband and expansive Well-controlled bass Power handling is good Sensitivity is high enough for almost any respectable amplifier.
Against Hint of colouration in some amplifier hook-ups Some transparency that requires clean-sounding electronics. TechRadar Verdict. Cons - Hint of colouration in some amplifier hook-ups - Some transparency that requires clean-sounding electronics.
B&W CM1 Matrix, need advice on how to proceed.
Will the amp be able to push the s? So a good amp capable of sub 4 Ohms The difference between the two amplifiers mentioned is 3dB SPL at around 12' with both over Related: Best turntables. Feed the S2 well-mixed acoustic music from any era — start at Louis Armstrong and move all the way to Robert Glasper — and you'll fall in To the credit of Bowers and Wilkins' flashy new towers, they're very amplifier agnostic, reproducing the same source material nearly identically regardless. Not finding what you're looking for?
Bowers & Wilkins CM1 series 2 (ex demo) satin white (Stands Sold Separately)
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Bowers & Wilkins 607 speaker review
A little bit of history is in order. This little two-way standmount proved so popular it spawned a whole range in and of itself, in the process pushing the Series out of the running. This year saw the most radical change to the range since its launch although in the case of the top CM10 floorstander, the original model was launched so recently it already featured many of the changes, so the S2 is a largely cosmetic upgrade. The change from original to Series 2 is a fairly significant one.
B&W CM1 S2
History of Bowers and Wilkins John Bowers grew his hi-fi audio company into the giant that it is today not only through innovations in design, but by making high-fidelity audio available to wider range of customers. From the very beginning, Bowers creations where state-of-the-art and forever changed the home audio landscape. My site is currently supported out-of-pocket and through donations. If you would like to donate, use my paypal link here. It all started in with the production of Bowers and Wilkins first loudspeaker the P1.
Bowers and Wilkins 607 Review
Integrated amp for B W ? AVS Forum. ASW s long-throw mm driver allows it to move the large volumes of air needed for high-quality low-frequency output, and its audiophile-standard W Class D amplifier keeps the compact unit running. B w cm-5 On a bookshelf or a speaker stand, the CM5 will give you a wonderfully big, expansive sound even if you don t have the floorspace to match. It s a slightly larger speaker than its sibling the CM1, with even higher sensitivity and power handling, and better bass extension. For most of their review period they powered the B W CM10 S2 and these were excellent speakers to use to judge this amplifier s traits. Luckily the THOR monoblocks are a very transparent sounding amplifier, and although the CM10 S2 don t require a power amplifier with this much Wattage, using this amount of power was a fine way to assess these. K 5 Exceptionally easy to use The CM10 s full-text display and simple-to-navigate, pop-up menu makes operation exceptionally easy.
SUGGESTED SYSTEMS $2,000 - $8,000
The Bowers and Wilkins CM1 are truly an amazing listen as they redefine listening to a compact bookshelf speaker. Bowers and Wilkins are adamant that they build speakers that can reproduce the sound of the artists recording more faithfully than any other speaker. These speakers are truly amazing for the size of the speaker cabinet and the price.
I actually bought these because I expected them to be very good after reading the many reviews available on line. These are a step up with the naut ilus tweeter so I assumed correctly they were indeed worth the cost difference. If you use decent electronics you will be shocked by these speakers. I am using a Denon Tuner that was laying around. I am using a Harmon Kardon Receiver. It sounds flat and lifeless, but the amp is very capable and the preamp is fine.
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