Focal 100 IWSUB8
Just Okay
Sound Quality
83/100
Integration
72/100
Build Quality
86/100
Features Connectivity
80/100
Value for Money
74/100
Focal’s 100 IWSUB8 brings deep, controlled bass to custom installations, reaching 30 Hz at -6 dB from an 8-inch Polyglass driver. A streamlined front vent supports quiet performance, while its shallow profile and paint-ready magnetic grille preserve a clean visual finish. As Best of High End notes, it is a compelling, discreet foundation for immersive 100 Series cinema systems.
Pros
Delivers extended, high-quality bass from its 8-inch Polyglass driver in a discreet in-wall format.
Streamlined front vent is designed for noise-free operation, while the shallow chassis and paintable magnetic grille aid clean integration.
Cons
As a passive subwoofer, it requires a separate compatible amplifier and is intended for pre-construction in-wall installation.
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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 383 more verified dealers