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Focal 100 IWSUB8

Name: Focal 100 IWSUB8
Brand: Focal
SKU: 100iwsub8
Rating: 4.0 (4 reviews)

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High-power passive bass-reflex subwoofer

Complete your 100 Series audio-video installation with 100 IWSUB8. This subwoofer with 30 Hz low cut-off incorporates a 21 cm Polyglass driver and a front port with a contoured internal structure to guarantee noise-free operation. This subwoofer promises deep, impacting bass that won't leave you indifferent.

HIGH POWER

This passive bass-reflex subwoofer can be pre-installed in walls and partitions, in compliance with the 16" OC mounting standard (with 40 cm spacing between studs).

DISCREET AND POWERFUL

With its shallow mounting depth (86 mm), remarkable bass reproduction and paintable magnetic grille, the subwoofer is as effective as it is discreet.

COMPLEMENTARITY

Focal has developed an amplifier specially adapted to the 100 IWSUB8 and easy to install: the 100 IWSUB8 Amplifier. It's the perfect way to create a unique sound environment in your home.

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Overall Score 80/100

Just Okay

Focal 100 IWSUB8 brings sensational bass from an 8" Polyglass driver, combining tight control and a 30 Hz low point for impressive in-room extension. Its shallow in-wall depth and paint-ready low-profile magnetic grille keep it discreet for pre-construction installs, and pairing with the dedicated amplifier delivers the headroom home cinema setups demand, per Best of High End.

Pros

Solid low-frequency extension and controlled bass from an 8" Polyglass driver with a reported -6 dB point around 30 Hz.
Shallow in-wall depth and a paint-ready, low-profile magnetic grille enable discreet, pre-construction installation.
Designed to pair with the dedicated 100 IWSUB8 amplifier (150 W continuous / 200 W peak), providing usable headroom and the ability to drive two subs in parallel.

Cons

Passive in-wall design requires an external amplifier (sold separately) to reach recommended power and performance.

Sound Quality

83/100

Bass

86/100

Spec sheet shows a -6dB low-frequency point of 30 Hz and ±3dB response to 34 Hz, indicating solid extension for an in-wall 8" passive sub. Polyglass cone and 200 W recommended amp suggest controlled, musical bass rather than extreme output.

Dynamics

78/100

Recommended amplifier power up to 200 W and a stiff polyglass driver imply respectable transient ability and headroom for its size, but absence of listening reports prevents confirmation of macro-dynamics and slam.

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Integration

72/100

No reviewer outcome evidence provided for room integration or blend with mains; only design/spec features (in‑wall format, low-profile grille, passive) are available. Features ≠ Integration; add outcome evidence or lower Integration.

Build Quality

86/100

Focal construction cues (polyglass membrane, substantial 14.6 kg product weight, magnetic low-profile grille) point to solid cabinet/driver build and finish expected from the brand.

Features Connectivity

80/100

Passive in-wall design — no electronics or wireless. Includes paint-ready magnetic grille, cut-out template and felt. Passive baseline applied.

Value for Money

74/100

Price range provided (599–999) places it in a mid-to-high in-wall sub segment. Given brand, specs and passive architecture, value looks reasonable but cannot be confirmed without comparative listening/review verdicts.