Side photo of the Bowers & Wilkins PM1 in Mocha Gloss with grille on
 

Technologies

The PM1 loudspeaker features several technological advances as well as advanced application of core Bowers & Wilkins technologies. There’s a new tweeter design, a fresh implementation of a Kevlar® cone, and Matrix™ bracing. There is also the continued implementation of the principles of purity and simplicity plus approaches learned from the development of the 800 Series Diamond.

Close up of the PM1 carbon braced tweeter

Carbon Braced Tweeter

This design takes the already high performance of Bowers & Wilkins aluminium domes to a whole new level. The Carbon Braced Tweeter uses a ring of ultra-thin wound carbon fibre to brace the tweeter dome, and as a result raise the break up of the aluminium dome to around 40KHz, which has a dramatic effect on the audible frequencies below 20kHz.

Find out more
B&W midrange driver, with kevlar and anti-resonance plug

Anti-Resonance Plug

Outweighing a standard dust cap in terms of performance, the Anti-Resonance Plug minimises sound overhang through a reduction in cone break up. The voice coil bobbin flexing is dampened to mellow the upper frequency response of the driver.

Find out more
Tweeter on top

Tweeter on Top

Bowers & Wilkins’ tweeter on top technology has two benefits. It avoids the situation with normal cabinet construction, where sound waves from the tweeter not only radiate towards the listener but also travel along the baffle surface towards the cabinet edges. It also allows its time-alignment with the midrange driver to be finely adjusted so the two outputs add perfectly in phase through the crossover region.

Find out more
De-coupling

De-coupling

Preventing mechanical vibration from the bass cabinet reaching the tweeter leads to a much cleaner, sweeter high frequency performance. For the 800 Series Diamond, we’ve adopted a synthetic gel to cushion the tweeter better than ever before. Not only that, we’ve also isolated the tweeter assembly from the tube and mounting behind, which reduces external interference to virtually nil.

Find out more
Kevlar

Kevlar

Kevlar® has been Bowers & Wilkins’ cone material of choice since 1974, and with good reason. Not only does it deliver a cleaner sound, it can do so to a wider group of listeners. The distinctive yellow cones are found on almost all Bowers & Wilkins loudspeakers.

Find out more
Nautilus Tapering Tubes

Nautilus Tapering Tubes

Not all sound generated by speaker drive units is good sound. The kind that emerges from the back of a working driver, into a conventional box cabinet, can bounce around and make a mess of the good sound coming out of the front. Bowers & Wilkins’ trailblazing Nautilus™ speaker found a way around boxes. Tapering tubes filled with absorbent wadding soaked up the wayward sound energy and reduced resonances to an insignificant minimum.

Find out more
Crossover

Crossover

We carry out exhaustive listening tests rigorously assessing the performance of each component until we find the optimum component for each position in the circuit. Fine-tuning by ear is only possible if the crossover is simple and the section of the crossover that perhaps benefits most from our policy of listen-and-learn is the part handling the signal for the tweeter. In most Bowers & Wilkins speakers, it is carried by a single, ear-chosen component that preserves the very finest detail.

Find out more
Flowport

Flowport

Bowers & Wilkins’s Flowport™ minimises turbulence in the same way as a golf ball. Dimples on the surface generate tiny eddy currents over which air can flow smoothly, reducing turbulence, and improving performance. This is because if turbulence occurs as the air moves in and out of the port, you’ll hear extraneous noise and, as you turn the volume up, the bass won’t be as tight and well timed as it should be. 

Find out more
Matrix

Matrix

Unique to Bowers & Wilkins, Matrix™ interlocking panels take cabinet bracing to the ultimate level. With powerful bass drivers trying to shake the cabinet and high air pressures inside trying to make the panels flex and blur the sound, this three-dimensional honeycomb structure reinforces the cabinet at small intervals and in every direction. Offering a dramatic cut in the level of cabinet coloration, Matrix allows you to focus on where the performers are, rather than being aware of where the speakers are.

Find out more

More to explore

Innovation

Innovation

Every discovery our scientists make influences how loudspeakers all over the world are designed and built.

Innovation
Abbey Road Studios

Abbey Road Studios

Read why the world's finest recording studio is a keen advocate of Bowers & Wilkins 800 Series loudspeakers.

Abbey Road Studios
800 Series Diamond

800 Series Diamond

Discover the world's best loudspeakers. Now with the clarity of diamond in every speaker in the range.

800 Series
Society of Sound

Society of Sound

Offers a unique chance to hear music exactly as recorded: detailed, vibrantly alive, full of power and unhindered by speaker distortion.

Society of Sound

Copyright © 2014 Bowers & Wilkins. All rights reserved.