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Two square white in-wall subwoofers with removable grilles

Goldwood Sound, Inc.

Goldwood Sound HD-S10 10" Flush Mount Passive Subwoofer 2 Pack

SKU CH-FEQK-TWXN5

Two 10 inch flush-mount passive subwoofers with 26–200 Hz response and 98 dB sensitivity, installing in 10.6 inch square cut-outs using a tool-free pressure-lock system

  • Product typeSubwoofer
  • Deep bass down to 26 Hz from 10" woven fiber cone
  • 98 dB sensitivity at 8 ohms for efficient amplifier pairing
  • Pressure Lock Mounting System secures to drywall without hardware
  • Two flush-mount units fit 10.6" square cut-outs at 3.54" depth
  • Paintable ABS housings and removable grilles blend with any décor

Streamlined In-Wall Bass

The Goldwood Sound HD-S10 passive subwoofer pair installs flush inside walls using a Pressure Lock mounting system that clamps to drywall without hardware. Each unit fits a 10.6" square cut-out and sits only 3.54" deep, keeping the profile low. Woven-fiber 10" cones with butyl rubber surrounds deliver a 26-200Hz frequency response at 98dB sensitivity and 8-ohm impedance. Removable ABS grilles can be painted to match any decor.

Upgrade From Bulky Boxes

These in-wall units replace traditional floor-standing subwoofer enclosures that consume floor space and clash with room aesthetics. The jump is worth it when a dedicated home-theatre or surround-sound system demands invisible, architectural bass without sacrificing low-frequency output. A separate sub amplifier such as the Goldwood WS1005 or SA200 is required for each passive subwoofer, and CL3-rated in-wall speaker wire must connect the amps to the speakers. Systems without a receiver RCA passive sub output cannot drive them.

Sustained Low-Frequency Output

Under continuous playback the passive design relies entirely on the external amplifier for thermal management, so sustained output follows the amp’s capability rather than an internal limit. The bulletproof woven-fiber cones and butyl rubber surrounds resist mechanical fatigue during extended high-excursion passages. Spring-loaded raw-wire terminals maintain secure contact over long runs. Performance stays consistent as long as the paired amplifier and wiring meet the stated specifications.

How it compares

Measured against everything we stock in Home Speakers & Subwoofers, at today’s prices. Recalculated every night.

Price $83.99
Cheaper than about 68% of the 1,147 comparable items (median $133.99).

Specifications

Product
Brand nameAcoustic Audio
Product typeSubwoofer

Questions about this item

What wall cut-out and mounting depth does the 10" flush-mount subwoofer need?

Each unit fits a square hole of 10.6" x 10.6" and requires a mounting depth of 3.54" behind the drywall.

How does the Pressure Lock Mounting System secure the subwoofer, and what mistake should I avoid?

The clamps tighten directly against the drywall with no screws or brackets; the common error is over-tightening and cracking the plasterboard.

When will I need to replace the raw speaker wire or the external sub amplifier?

CL3-rated in-wall wire is rated for the life of the installation; the separate sub amplifier (such as a WS1005 or SA200) only needs replacement if it fails or you upgrade power.

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