Invisible Subwoofer

The Stealth Acoustics model B22G is a compact, two-panel monaural subwoofer speaker system that becomes completely invisible after installation. The subwoofer has a rigid frame that attaches directly to standard structural framing. The paintable active diaphragm face is bonded to the frame of the speaker panel, creating an active area surrounded by a stable mounting area. Installation instructions are shown on a paper overlay that is to be removed before installation. The overlay can also be used as a cutting template for retrofitting the speakers into existing wallboard.

The B22G may be installed in either the wall or ceiling and on-site finishing options include latex paint, light wallpaper, fabrics and selected texture coats. There is no need for special vellums or other nonstandard wallboard finishing materials. Advanced finishing methods such as Venetian plaster and select veneers are supported using special techniques.

Ideal for any surround sound, foreground music or whole-house audio system that needs extra bass output, each B22G panel incorporates an acoustically coupled, high-quality, high-power 8” (203 mm) cone woofer. The panels work in pairs as a monaural output subwoofer. This two-panel system allows each panel to be placed wherever they perform best, free of visual concerns that may conflict with architectural features. B22G panels may be mounted separately or stacked to achieve desired acoustical results. For stereo subwoofers, four panels should be employed.

Using acoustic lever principals, the B22G provides exceptional bass output from 30Hz to 150Hz by trading off excursion for surface area to propagate bass waveforms. Each panel has 228 sq. in. (579 sq. cm) of active area for a total of 456 sq. in. (1158 sq. cm) for both panels.

Stealth Acoustics recommends the companion Model 255R 250-watt subwoofer amplifier/crossover as a matched amplifier for the B22G subwoofer speakers. Stealth Acoustics also offers a line of full-range speaker panels that when combined with the B22G, deliver a complete, totally invisible audio solution.

Product Description

Frequency Response:

30Hz to 150Hz

Power Capacity:

80 watts RMS

50 watts minimum recommended power


86 dB (1 watt / 1 meter)

Driver Components:

One 8″ (203 mm) woofers and one 1-1/2″ (38 mm) voice coil per panel

One ceramic 20 oz. (622 gr) magnet

System Impedance:

8Ω nominal

Polar Dispersion:

170 degrees vertical and horizontal

Crossover Frequency:

Requires amplifier with low pass filter. 50Hz with 18 dB slope recommended


Width: 15-7/8” (403 mm)

Heigh: 22” (559 mm)

Mounting Depth: 2-1/2” (64 mm)

Product Weight:

10.5 lbs. (4.8 kg) each

Shipping Weight:

30 lbs. (13.6 kg) per pair

Included Accessories:

Mounting shims

Mounting screws

Terminal wrench

Optional Accessories:

PS-22 PlaceSaver®

BX-22 MDF Acoustic Back Box

MBX-22 UL Listed Metal Back Box

MBA-22 UL Listed Metal Back Box – Adjustable

MBC-22 Concrete Back Box

SK-1 Shim Kit

Warranty – Extended Warranty 15 year

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