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White square in-wall subwoofer with magnetic grille visible

CELUX

CELUX SUB8 Passive In-Wall In-Ceiling Subwoofer

SKU CH-9BRB-0AT8Z

Passive 8-inch in-wall or in-ceiling subwoofer with shallow mounting, low-pass crossover and edgeless paintable grilles

  • Product typeWired
  • Shallow SWS design fits tight wall or ceiling cavities
  • Iron-core copper low-pass filter removes voices for pure bass
  • Inverted cone maximises excursion in shallow mounting spaces
  • Edgeless paintable grilles in round and square vanish into décor
  • Turn-N-Lock mechanism secures the sub with simple screw tightening

In-Wall Passive Subwoofer for Integrated Audio

The CELUX SUB8 is a passive in-wall and in-ceiling subwoofer designed for custom installation. Its Shallow Woofer System (SWS) delivers deep bass while maintaining a low-profile form factor. An inverted cone design maximises excursion within shallow mounting depths. The edgeless, paintable finish with included magnetic round and square grilles allows the unit to blend discreetly into any room aesthetic.

Installation Requirements

Verify that your wall or ceiling cavity can accommodate the shallow mounting depth required by the SWS design. Ensure you have a compatible external amplifier with a lowpass crossover, as the SUB8 is a passive unit requiring powered signal input. The built-in iron-core copper-wire lowpass crossover filters higher frequencies, so confirm your amplifier can drive the subwoofer within its intended frequency range. Plan for wiring runs to the amplifier location before cutting any openings.

Suited for Discreet Home Audio.

This subwoofer suits installers and homeowners seeking invisible bass reinforcement for distributed audio or home theatre systems. The Turn-N-Lock mechanism simplifies secure mounting for professional integrators. Buyers wanting a self-powered subwoofer with built-in amplification should look at active models. Those needing a freestanding or portable bass solution will not be served by this fixed-mount design.

How it compares

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

Price $253.99
Pricier than about 92% of the 838 comparable items (median $40.99).

Specifications

Product
Product typeWired

Questions about this item

What comes in the box and what must be purchased separately?

The SUB8 includes magnetically attached round and square grilles plus the Turn-N-Lock mounting hardware; a separate amplifier and speaker cable are required to power the passive subwoofer.

How do I decide which version or capacity to choose?

The SUB8 is offered as a single 8-inch passive in-wall/in-ceiling model with a 100 Hz lowpass crossover, so there are no alternate capacities or versions to select.

What does the 100 Hz lowpass crossover mean once the subwoofer is installed?

The iron-core copper-wire filter removes frequencies above 100 Hz, sending only pure bass to the driver so voices and instruments stay with the main speakers.

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