Invisible Subwoofer

The Stealth Acoustics Model B30G is a two-panel monaural subwoofer speaker system that becomes completely invisible after installation. Ideal for any surround sound, foreground music or whole-house audio system that needs extra bass output, each B30G panel incorporates two acoustically coupled, high-quality, high-power 8” (203 mm) cone woofers. B30G panels may be mounted separately or stacked to achieve desired acoustical results.


Stealth Acoustics recommends the companion Model SA255 250-watt subwoofer amplifier/crossover as a matched amplifier for the B30G subwoofer speakers. Stealth Acoustics also offers a line of full-range speaker panels that when combined with the B30G, deliver a complete, totally invisible audio solution.


The B30G 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. It 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 may be supported using special techniques.



Added Bass for Foreground Music
Added Bass for Background Music
Whole House Audio Systems
Surround Sound Systems
Home Theater System



Specification Sheet: Download PDF
Installation Instructions: Download PDF
Dimensional Drawings: Download PDF


Frequency Response:
20Hz to 160Hz


Power Capacity:
100 watts RMS
60 watts minimum recommended power


86 dB (1 watt / 1 meter)


System Impedance:
8Ω nominal

Driver Components:
Two 1.5” (38 mm) voice coil, 8” (203 mm) woofers
Ceramic 20 oz. (622 gr) magnet


Polar Dispersion:
170 degrees vertical and horizontal

Width: 15-7/8” (403 mm)
Height: 30″ (762 mm)


Mounting Depth:
2-1/2” (64 mm)


Product Weight:
20 lbs. (9.5 kg) each panel


Shipping Weight:
46 lbs. (21 kg) per pair


Included Accessories:
Mounting shims
Shim tape
Mounting screws
Terminal wrench