Focal
Focal 100 IWSUB8
Best in-wall subwoofer for seamless, high-impact home cinema bass.
Experience powerful, deep bass integration with the Focal 100 IWSUB8 in-wall passive subwoofer. Designed for seamless home theater setups, it features an 8-inch Polyglass driver for precise sound reproduction and a bass-reflex design for impactful low frequencies. This subwoofer supports pre-installation in walls and partitions, adhering to standard mounting practices. Its horizontal mounting capability and L/C/R function switch enhance versatility for home cinema installations. For optimal performance, it is designed to be complemented by the dedicated Focal 100 IWSUB8 Amplifier.
$829.00
More 100 Options
Owner Satisfaction
4.6
/ 5
Category Rank
1854
/ 6550
#1854 in Speakers
Price vs Category Average
-43%
Below average
Product type
Passive In-Wall Subwoofer
/ Passive In-Wall Subwoofer
Who it's for
- Homeowners prioritizing clean, minimalist interior design
- Audiophiles seeking high-fidelity bass in a hidden form factor
- Custom installers needing efficient, time-saving mounting solutions
Who should skip it
- Budget-conscious buyers avoiding additional amplifier costs
- Home theater enthusiasts demanding deep, room-shaking sub-bass
- Renters or homeowners avoiding permanent structural modifications
Performance breakdown
Bass Precision
Polyglass driver technology delivers tight, controlled low-end response without unwanted muddiness.
Installation Versatility
Horizontal mounting and L/C/R switching allow for flexible home cinema placement.
Acoustic Impact
Bass-reflex design provides substantial depth that belies its compact in-wall footprint.
Build Integrity
Robust construction ensures vibration-free performance even during demanding high-output sequences.
System Integration
Requires a dedicated amplifier to unlock the full potential of the driver.
Space Efficiency
Slim profile disappears into walls while maintaining high-fidelity audio output standards.
Key Specs
Product type
Passive In-Wall Subwoofer
Driver
8" Polyglass
Frequency Response
34 Hz - 140 Hz (+/- 3dB)
Low Cut-off Frequency
30 Hz (-6dB)
Nominal Impedance
8 Ω
Recommended Amplifier Power
Max 200 W
Sensitivity
89 dB
Mounting Depth (Behind surface)
3.37 in
Features
- Powerful, well-defined bass response
- High-power passive bass-reflex design
- Seamless in-wall installation
- Horizontal mounting for home cinema
- Adjustable L/C/R function switch
- Noise-free operation with contoured port
- Designed for dedicated amplifier
What customers say
Customers overwhelmingly praise the Focal 100 IWSUB8 for its exceptional integration and sound quality within a discreet in-wall design. Reviewers highlight its ability to produce surprisingly deep and articulate bass, maintaining Focal’s signature musicality. The build quality and paintable grille contribute to its seamless aesthetic appeal in high-end home theaters. A crucial consideration is that this passive subwoofer demands a powerful external amplifier for optimal performance, which increases the total system cost. Despite this necessary investment, users find the premium price justified by the superior, stealthy performance and unparalleled integration capabilities, solidifying its reputation as a top choice for visually sensitive installations.
Know before you buy
No, the Focal 100 IWSUB8 is a passive subwoofer. It requires a dedicated external amplifier, specifically the Focal 100 IWSUB8 Amplifier, to function correctly and achieve optimal performance.
Yes, it is designed for seamless in-wall installation. With a mounting depth of 3.37 inches, it fits into standard wall partitions, though you should verify your wall depth before installation.
The L/C/R switch allows you to adjust the subwoofer's output characteristics to better match your specific home cinema configuration, whether it is being used as a Left, Center, or Right channel bass reinforcement.
The bass-reflex design uses a contoured port to move air efficiently, which helps produce deeper, more impactful low frequencies while minimizing unwanted noise or distortion.
Yes, the 100 IWSUB8 is specifically engineered to support horizontal mounting, making it a versatile choice for custom home cinema setups where space or layout requirements are unique.
The 8-inch Polyglass driver is designed for rigidity and precision, delivering a well-defined and powerful bass response that remains tight and controlled even at higher volumes.
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