Focal 100 IWSUB8
The Focal 100 IWSUB8 brings deep, controlled bass to custom cinema and multi-room systems without sacrificing wall space. Its 8-inch Polyglass driver reaches to 30Hz, while the streamlined front vent supports quiet bass-reflex performance. Best of High End highlights its discreet shallow installation and paint-ready magnetic grille—an elegant route to more immersive low-end.
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Just Okay
Sound Quality
83/100
Integration
72/100
Build Quality
86/100
Features Connectivity
80/100
Value for Money
74/100
Pros
Delivers solid in-wall bass extension, specified down to 30Hz at -6dB, from an 8-inch Polyglass driver.
Streamlined front vent is designed for noise-free bass-reflex operation.
Shallow in-wall form, low-profile paintable magnetic grille, and dedicated amplifier option make for discreet system integration.
Cons
Passive design requires the matching external 100 IWSUB8 Amplifier or another suitable amplification solution.
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SOUND QUALITY PERFORMANCE 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.
Assessments of Build Quality, Usability, and Overall Propositions.
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.
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Specifications
- Design
- Height : 1300 mm / 5.81 in Width : 352 mm / 13.87 in Depth : 98 mm / 3.87 in Weight : 14.6 kg / 32.3 lb
- Sound - Acoustics
- Product type : Passive subwoofer Response at - 6dB (Low frequency point) : 30 Hz Frequency response (+/- 3dB) : 34 - 140 Hz
- Included Accessories
- Grilles : Ready-to-paint low profile grille with magnetic fixing
Manufacturer's Description — Focal
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.
Verified Dealers
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Authorized dealers for Focal 100 IWSUB8
- The Music Room — online and in-store — Erie, Colorado, United States (website)
- 110Hz — online and in-store — Kielce, Województwo świętokrzyskie, Poland (website)
- A Tube High Fidelity — online and in-store — Almere, Flevoland, Netherlands (website)
- A/V Solutions — in-store — Pleasanton, California, United States (website)
- Abt Electronics — online and in-store — Glenview, Illinois, United States (website)
- Accent On Music — in-store — Mount Kisco, New York, United States (website)
- Accessories 4 less — online and in-store — Apopka, Florida, United States (website)
- Acoustic Designs Inc. — in-store — Scottsdale, Arizona, United States (website)
- Acoustic Sounds — online and in-store — Salina, Kansas, United States (website)
- Acoustic Streams — in-store — Lower Drift, England, United Kingdom (website)
and 345 more verified dealers