PSB PWM3 7-Driver On-Wall Speaker

PSB PWM3 On-Wall Speaker at Vinyl Sound Buffalo NY

The PSB PWM3 is a seven-driver on-wall speaker built around a 1-inch titanium dome tweeter with ferrofluid, two 3-inch carbon fibre midrange drivers with rubber surround and cast basket, and four 4-inch carbon fibre woofers with rubber surround and cast basket, all housed in a dual-ported MDF bass reflex cabinet measuring 48 inches wide by 6.5 inches tall by 3.38 inches deep. Available at Vinyl Sound in Buffalo, New York, the PWM3 is the flagship of PSB's PWM on-wall speaker series, designed for high-performance home theater installations where flush in-wall construction is not possible or desired. The bass reflex cabinet extends the frequency response to 60Hz (±3dB) with a -10dB point at 35Hz — bass performance uncommon in on-wall speaker form factors. The titanium dome tweeter extends high-frequency output to 35,000Hz. The PWM3 delivers 86dB anechoic sensitivity into a nominal 8-ohm load. The cabinet can be mounted horizontally for center channel or L/R stereo use below or above a display, or vertically as L/R or surround channels beside a screen, using the included wall mount bracket — note that the bracket is not rated for ceiling mounting. The satin black and satin white finish options allow the PWM3 to match wall color or blend into the display surround. Multiple PWM3 units can be configured as a matched L/C/R front stage or expanded to a five- or seven-channel surround array. The PWM3 is part of Vinyl Sound Buffalo's full speaker collection, which includes on-wall, in-wall, in-ceiling, outdoor, powered, and floorstanding speakers from leading audio brands.

Seven-Driver Configuration: Titanium Tweeter, Carbon Fibre Midrange, and Carbon Fibre Woofers

The PWM3's driver complement spans three size categories across seven individual drivers. The single 1-inch titanium dome tweeter is ferrofluid-cooled and handles the highest frequencies in the system, extending output to 35,000Hz. Titanium dome tweeters are hard dome designs with a high natural resonance frequency and high stiffness-to-mass ratio, producing accurate high-frequency transient response and smooth off-axis dispersion. The ferrofluid fills the gap between the tweeter voice coil and the pole piece, removing heat from the coil via conduction into the magnet structure, which reduces dynamic compression at sustained high output levels. The two 3-inch midrange drivers use carbon fibre cones, rubber surrounds, and cast aluminum baskets. Carbon fibre cone material provides high stiffness and low mass relative to the cone's diameter, which pushes the first breakup resonance above the operating range of each driver. The cast basket provides a rigid, dimensionally stable platform for the driver's motor and surround — cast metal does not flex under the mechanical forces generated by a driver in motion, maintaining precise voice coil alignment through the gap. The four 4-inch woofers share the same construction: carbon fibre cone, rubber surround, and cast basket. Distributing bass output across four smaller woofers rather than one or two larger drivers keeps the cabinet depth shallow while providing the combined cone area and motor force needed to drive the dual-ported bass reflex enclosure to 35Hz.

Dual-Ported Bass Reflex Cabinet, Vertical and Horizontal Mounting

The PWM3's bass reflex cabinet uses two ports tuned to extend low-frequency output below the four woofers' free-air resonance frequency. Dual ports allow the cabinet's bass reflex loading to be spread across two smaller port apertures rather than one large one, which reduces port air velocity at a given output level and lowers the frequency at which port chuffing — turbulent airflow noise at the port opening — becomes audible. The result is a bass reflex alignment that achieves the -10dB point at 35Hz from a cabinet that is only 3.38 inches deep and 6.5 inches tall. The MDF cabinet and MDF frame provide a dense, well-damped enclosure that suppresses panel resonances across the woofer operating range. The wall mount bracket included with the PWM3 supports both vertical and horizontal installation. Mounted horizontally, the PWM3 presents its 48-inch width along the wall with the drivers arranged in a horizontal line — the standard orientation for a center channel installed below or above a display. Mounted vertically, the PWM3 presents a 6.5-inch wide by 48-inch tall column for left, right, or surround channel use beside a screen. The bracket is designed for wall installation only and is not rated for ceiling mounting.

Specifications

Frequently Asked Questions

What does a seven-driver configuration mean in the PSB PWM3?

A seven-driver speaker uses seven individual transducers — separate physical drivers — to cover the full audio frequency range. In the PWM3, the seven drivers are divided by function: one 1-inch titanium dome tweeter handles the highest frequencies; two 3-inch carbon fibre midrange drivers reproduce the midrange frequencies; and four 4-inch carbon fibre woofers reproduce the bass frequencies. Each driver group operates over the frequency range it is best suited to, rather than one or two drivers attempting to cover the full range. Multiple midrange and woofer drivers working in parallel multiply the available cone area and motor force, allowing the speaker to produce higher output levels and deeper bass extension from a cabinet that is only 3.38 inches deep. The seven-driver array is distributed across the PWM3's 48-inch cabinet length, which provides acoustic advantages in controlling the speaker's vertical dispersion pattern when mounted horizontally in a center or L/R configuration.

How does the PWM3 achieve 35Hz bass extension in a 3.38-inch-deep cabinet?

The PWM3 achieves -10dB bass extension to 35Hz through a combination of factors: four separate 4-inch woofers working in parallel to multiply cone area and motor force; a dual-ported bass reflex tuning that extends the low-frequency output below the woofers' free-air resonance frequency; and an MDF cabinet tuned to control the bass reflex alignment. Bass reflex loading allows the port itself to radiate bass output at and below the driver's resonance frequency, augmenting the woofer's natural output in that range. Distributing the load across four drivers instead of one or two larger woofers keeps the individual driver excursion low, reducing distortion at the output levels needed to load the ports effectively. The result is bass performance that approaches or matches some compact bookshelf speakers, from a cabinet only 3.38 inches deep and 6.5 inches tall — shallow enough to mount flat on a standard interior wall without significant protrusion into the room.

Can the PWM3 be mounted both vertically and horizontally?

Yes. The included wall mount bracket supports both vertical and horizontal installation. Mounted horizontally, the PWM3 is 48 inches wide and 6.5 inches tall — the standard orientation for a center channel below or above a display, or for L/R stereo speakers mounted at ear level along a wall. Mounted vertically, the PWM3 is 6.5 inches wide and 48 inches tall — a narrow column speaker suited to flanking a display screen as left and right front channels or as surround speakers. The bracket is designed for wall installation only; PSB's specifications note it is not designed or rated for ceiling mounting. The satin black and satin white finish options allow the PWM3 to match the wall color or the bezel of the display it is mounted beside.

What home theater configurations can use the PWM3?

The PWM3 is designed to function as any channel in a home theater speaker system. Multiple PWM3 units can be configured as a matched L/R stereo pair, a matched L/C/R front stage (three PWM3 units across the front wall), a 5.1 system (L/C/R front plus two surround channels, all PWM3), or a 7.1 or larger system with additional PWM3 units as rear surrounds or height channels. Using the same model for all channels provides a consistent tonal signature across the soundstage, which is particularly important in home theater where sounds cross from the front stage through to the surrounds as effects pan across the listening space. The PWM3's ability to be mounted horizontally or vertically means the same unit can serve as a horizontal center channel below the screen and as vertical L/R channels beside the screen without requiring a different model for each position.

What are the carbon fibre cone drivers in the PWM3 and why does PSB use them?

The PWM3's midrange and woofer drivers use carbon fibre cone diaphragms — composite cones in which carbon fibre material provides the structural matrix of the cone rather than paper, polypropylene, or other common cone materials. Carbon fibre cones offer a high stiffness-to-mass ratio: they are rigid enough to behave as a true piston — moving as a single rigid surface rather than flexing — across a wider frequency range than most polymer cone materials at the same mass. High cone rigidity pushes the first cone breakup resonance higher in frequency, keeping the driver in its controlled piston operating range through its intended pass band and reducing the coloration that occurs when a cone flexes unevenly. The cast basket on each driver — both midrange and woofer — provides a rigid, precisely machined mounting frame for the driver's surround and voice coil assembly. Cast baskets maintain dimensional accuracy under the mechanical stresses of speaker operation, keeping the voice coil centered in the magnetic gap for low distortion at high excursion levels.

How does the PWM3 differ from PSB's in-wall speakers like the W-LCR?

The PWM3 mounts on the surface of the wall using the included bracket; it does not require cutting into the drywall or accessing the wall cavity. The W-LCR and other PSB in-wall models are flush-mounted — installed by cutting a rectangular hole in the drywall and securing the speaker frame to the wall opening. In-wall installation produces a flush, invisible appearance where only the grille is visible on the wall surface. On-wall installation like the PWM3 leaves the speaker body visible on the wall surface, with only a 3.38-inch protrusion from the wall plane. On-wall is the correct choice when the wall construction does not allow cutting — concrete or brick walls, walls with dense insulation, steel stud commercial construction, or apartment installations where wall modification is restricted. On-wall is also faster to install and fully reversible, since no wall opening is required. The PWM3's satin finish and magnetic cloth grille are designed to make the on-wall appearance as clean and minimal as the installation constraints allow.

Where to buy PSB PWM3 on-wall speakers in Buffalo NY?

The PSB PWM3 is available from Vinyl Sound, an authorized PSB Speakers dealer in Buffalo, New York. Vinyl Sound carries the full PSB PWM series along with PSB's in-ceiling and in-wall speaker lines for customers designing complete architectural audio systems. Free shipping is available across the continental United States. Contact Vinyl Sound Buffalo by phone or email to purchase the PWM3, order multiple units for a matched home theater configuration, or compare on-wall versus in-wall speaker options for your installation.