Focal Inside ISUB Twin Subwoofer

Enhance your in-car audio experience with the Focal ISUB TWIN, a set of ultra-compact passive subwoofers engineered for tight, punchy bass and seamless integration. Built with robust aluminum diaphragms and heavy-duty double ferrite motors, these subwoofers provide accurate low-frequency response, enriching your sound system with depth and realism.

Designed for effortless installation, the ISUB TWIN fits easily under seats* and comes with hook-and-loop fasteners for tool-free mounting. For a more permanent setup, they can also be screwed directly into the vehicle floor. The front grilles ensure optimal sound dispersion throughout the cabin, making the bass both powerful and immersive.

For best performance, Focal recommends pairing the ISUB TWIN with the Impulse 4.320 amplifier, leaving two additional channels free for powering front door speakers. Fully compatible with all Focal Car Audio and Focal Inside products, the ISUB TWIN is the perfect choice for drivers seeking discreet yet impactful bass reinforcement.

Key Features

• Ultra-compact twin subwoofer design – ideal for under-seat installation
• Powerful output – 2 × 200 W peak handling
• Aluminum diaphragm & double ferrite motor – delivers accurate, impactful bass
• Front grilles included – optimized cabin-wide sound dispersion
• Easy installation – tool-free with hook-and-loop fasteners or screw-in option
• Invisible integration – fits discreetly under seats without modifications
• Focal Inside compatibility – seamless with factory or aftermarket systems

Technologies

• Aluminum Diaphragm – Lightweight and rigid for precise, dynamic bass.
• Double Ferrite Motor – Ensures robust performance and powerful low-end response.
• Butyl Surround – Offers long-lasting durability and stability.
• Compact Installation – Designed to fit under seats for discreet integration.