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Focal IWSUB8 In-wall Bass Package

Passive in-wall subwoofer with matching external amplifier

Item # 700IWSUB8P

Enjoy punchy bass in your home theater without taking up any floor space.

Enjoy punchy bass in your home theater without taking up any floor space.

Item # 700IWSUB8P

In stock

$1,598.00 -$99.00 Package discount

$1,499.00 each

Other options

60-day price protection

We’ll reimburse you if the price drops.

60-day returns

If you don't love it, send it back.

Since 1974

Years of experience making people happy.

About the Focal IWSUB8 In-wall Bass Package

High-quality, in-wall bass

Focal knows that not every room is well-suited for a bulky subwoofer that takes up space on the floor. Cue the IWSUB8, an in-wall passive sub that delivers punchy bass while easily blending into your room. It's a great choice for your in-wall home theater or stereo music system in a small- to medium-sized room. 

High-quality, in-wall bass

Focal knows that not every room is well-suited for a bulky subwoofer that takes up space on the floor. Cue the IWSUB8, an in-wall passive sub that delivers punchy bass while easily blending into your room. It's a great choice for your in-wall home theater or stereo music system in a small- to medium-sized room. 

Focal IWSUB8 In-wall Subwoofer

Paint the included magnetic grille to match the aesthetic of your room.

Ideal for new construction or renovations

The IWSUB8's in-wall enclosure is designed to install between two 16" on-center studs before your walls go up. Its paintable, magnetic grille is all you'll see in your room once the installation is complete.

Matching amplifier included

This package includes an amplifier that you'll install in your A/V cabinet, rack, or equipment shelf. In connects to your home theater receiver or preamp/processor via a subwoofer cable, and to the IWSUB8 subwoofer via in-wall speaker wire.

If you ever want to expand your system, this amp can drive up to two IWSUB8 subs at the same time.


Product highlights:

  • ideal for a discreet home theater or stereo music system
100 IWSUB8 in-wall subwoofer:
  • 8" Polyglass woofer
  • frequency response: 34-140 Hz (-3 dB)
  • impedance: 8 ohms
  • recommended amplification: up to 200 watts RMS
  • non-resonant, bass-reflex enclosure with front-firing port
  • designed to install between two 16" on-center studs
  • includes paintable magnetic grille to match your décor
  • includes mounting bracket and hardware
  • cutout dimensions: 13-5/8"W x 13-5/8"H
  • overall dimensions: 14"W x 4-1/4"D x 51-1/4"H
  • weight: 32.3 lbs.
  • designed in France
  • warranty: 2 years
100 IWSUB8 mono subwoofer amplifier:
  • 75 watts RMS x 1 at 8 ohms, 150 watts RMS x 1 at 4 ohms
  • can power two 100 IWSUB8 in-wall subwoofers simultaneously
  • rack-mountable (mounting hardware included)
  • front-panel volume, phase, and crossover controls
    • continuously variable low-pass crossover (40-200Hz)
    • continuously variable phase control (0-180°)
  • binding post speaker connections
  • stereo line-level RCA inputs and outputs
  • signal-sensing auto on/off mode
  • detachable IEC AC power cord
  • 16-7/8"W x 2"H x 12-1/4"D
  • designed in France
  • warranty: 2 years
  • Our 60-day money-back guarantee

What's in the box:

  • Focal IWSUB8 Subwoofer:
  • Passive in-wall subwoofer
  • Magnetic mounting frame
  • Metal-mesh grille
  • 2 Angled mounting brackets
  • Thirty-six 30mm screws
  • Twelve 13.5" foam strips w/ adhesive backing
  • Cut-out template
  • Quickstart guide
  • IWSUB8 Amplifier:
  • Subwoofer amplifier
  • 72" Power cable (IEC 3-pin)
  • 2 Rack-ears
  • Six 8mm screws
  • Quickstart guide

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Crutchfield response

<< >>

More details on the Focal IWSUB8 In-wall Bass Package

Stacey B.

Features & specs

Quantity in Package Pair
Tweeter ---
Aimable Tweeter No
Woofer Composition Polyglass
Woofer Surround Rubber
Moisture-resistant No
Connector Type XLR, RCA Post
Bi-Amp Inputs No
Built-in Back-box No
Tweeter Size N/A
Midrange Size N/A
Woofer Size 8
Speaker Shape Rectangle
Cutout Width 13.625
Cutout Height 13.625
Mounting Depth 4.25
Power Range (Watts) 75-150
Sensitivity ---
Impedance (Ohms) 8
Frequency Response 34-140Hz
Parts Warranty 2 Years
Labor Warranty 2 Years

Product Research

Passive Subwoofer
Mono Amplifier

Passive Subwoofer

In-Wall Subwoofer: The Focal 100 Series IWSUB8 passive, bass-reflex subwoofer has been developed to give you high-quality bass reproduction while remaining "low profile" with its in-wall design. The IWSUB8 is an ideal addition to any home theater or home stereo setup and it's 8 ohm configuration allows two to be wired in parallel, providing a 4 ohm load to your mono amplifier (sold separately).

Driver: The IWSUB8 features a single 8" subwoofer driver utilizing Focal's polyglass technology. This manufacturing process applies molten glass microballs to a cellulose pulp cone, combining the excellent damping properties of paper with the rigidity of glass. Polyglass has a rigidity index that exceeds a single skin of Kevlar and has almost ten times the rigidity of polypropylene. This mass/rigidity/damping ratio results in a smooth, linear frequency response.

Enclosure: The IWSUB8's ported enclosure has been specifically optimized for the 8" driver and features a port with a streamlined inner frame for no-noise operation while providing a deep bass response. The driver and enclosure combination offers a frequency response of 34Hz - 140Hz (-3dB) with low-end extension to 30Hz (-6dB).

Terminals: Two recessed spring-post terminals on the bottom of the enclosure are provided for connection, with both accepting up to 12AWG wire.

Mounting: The subwoofer enclosure is designed to be installed, during pre-construction, in walls using 16" OC joists. When fully mounted, the enclosure has an installation depth of 3-3/8" with only the grille visible. The included magnetic metal mounting frame gets mounted on the outside of the drywall and attached to the enclosure, securing all three together. The metal-mesh grille simply "snaps" onto the magnetic frame and can be painted to match the surrounding wall. Mounting hardware is provided, including angle-brackets for attaching the subwoofer to wall studs.

Power: The 8 ohm IWSUB8 subwoofer has a maximum recommended power rating of 200 watts @4 ohms (2 subs wired in parallel), and is the perfect match for the Focal IWSUB8 Amplifier, delivering 150W RMS (200W peak) into a 4 ohm load.

Subwoofer Specifications:

  • Speaker Type: Passive in-wall subwoofer, ported
  • Driver: 8" Polyglass woofer
  • Frequency Response: 34Hz - 140Hz (-3dB)
  • Low-End Extension: 30Hz (-6dB)
  • Impedance: 8 Ohms
  • Recommended Power: Maximum 200W (@ 4 Ohms)
  • Overall Dimensions: Width - 14.0", Height - 51.250", Depth - 4.250"
  • In-Wall Depth: 3.375"
  • Drywall Cut-Out: 13.625" x 13.625"
  • Net Weight: 32.3 lbs.

Mono Amplifier

Subwoofer Amplifier: The Focal 100 IWSUB8 Amplifier is a rack-mountable mono subwoofer amplifier capable of delivering up to 150 watts of RMS power into a 4 ohm subwoofer (200W peak power). Designed for powering a single 4 ohm sub, or two 8 ohm subs in parallel, the amplifier is a perfect match for the Focal IWSUB8 in-wall subwoofer.

Rear Panel:

  • Input: All audio input to the amp is through a single pair of rear-panel RCA jacks. If running a single mono LFE channel to the amplifier, only the Left RCA jack will be used.
  • Output: A second pair of RCA jacks can be used as a pass-thru for the input signal, allowing it to run to an additional subwoofer amplifier (sold separately).
  • Speaker Output: A single pair of binding posts provides the powered speaker output, accepting speaker wire up to 12AWG as well as banana or pin connectors. A protective cap can be removed from the end of each post when using banana connectors.
  • Voltage Selector: A slide-switch allows the input voltage type to be selected with choices of 100-120V/60Hz and 220-230V/50Hz. The Voltage Selector is protected by a removable cover plate.

Front Panel:

  • Status LED
  • Auto Turn-On: This allows the amplifier to automatically power on when it detects an audio signal on the input, and shut down when the signal ceases.
  • Volume (offset): Allows you to balance the subwoofer volume relative to the overall system volume.
  • Phase: Offers a range from 0 to 180 degrees for shifting the subwoofer's phase.
  • Crossover: Offers a low-pass cutoff ranging from 40Hz to 200Hz. When the dial is turned all the way clockwise to the LFE setting, the crossover is defeated.

Protection: The 100IWSUB8 Amplifier features built-in protection circuits offering dynamic power control along with short circuit, thermal, and over-current protection. The amplifier also includes a rear-panel fuse holder with a T3.15AL/250V fuse installed.

Mounting: The Focal subwoofer amplifier is shipped ready for table- or shelf-top installation, but includes ears and mounting hardware for rack-mounting as well. With the rack ears installed, the amp will fit a standard 19" rack while taking up 1 horizontal rack space.

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Customer Q&A

1 question already asked

what size wire is preferred to run to this speaker?
[ Rick  Dec 13, 2020 ]
1 answer
The Focal IWSUB8 can accept up to 12 gauge speaker wire. Depending on the distance you need to run the speaker wire will determine which gauge wire you need. For relatively short runs (less than 50 feet) 16 gauge works great. The longer the wire run, the thicker the gauge wire you should use. Over 50 feet we recommend 14 gauge wire. If your wire run is more than 100 feet, 12 gauge would work best. You will also need a subwoofer cable to connect the amplifier to your home theater receiver or processor.
[ Allison  Dec 30, 2020 ]  Staff

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