Everything you need to know about the product
The Focal ISUB TWIN delivers a serious bass upgrade in a smart, low-profile package. Designed for vehicles with limited space, these ultra-compact passive subwoofers provide powerful low-frequency response without compromising your cabin or boot layout.
Each enclosure features a heavy-duty double ferrite magnet and aluminium diaphragm, ensuring deep, punchy bass performance. Optimised front grilles project sound evenly throughout the vehicle, creating an immersive audio experience.
Installation is quick and tool-free — slide them under the seats and secure using the provided hook-and-loop straps, or opt for a permanent mount with screws. This flexibility makes them ideal for cars, 4WDs, and commercial vehicles alike.
Pair the ISUB TWIN with the Focal Impulse 4.320 amplifier to unlock their full potential. Two channels power the subwoofers, while the remaining channels drive your front speakers — giving you a complete, clean-sounding system from a single amp.
Discover what makes our products industry leaders.
A matched pair of compact passive subwoofers purpose-built for discreet under-seat placement in space-limited vehicles.
Delivers deep, punchy bass with low distortion thanks to a robust dual ferrite magnet assembly and lightweight aluminium diaphragm.
Purpose-designed enclosures fit where standard subs cannot, with no vehicle modification required for installation.
Install tool-free with the included hook-and-loop straps for a temporary fit, or fix permanently using screws.
Designed to pair with the Focal Impulse 4.320 amplifier, using two channels for the subs and the remaining channels for front speakers.
Front grille design disperses sound evenly throughout the cabin for a balanced, immersive listening experience.
A deep dive into our industry-leading technology and high-performance standards.
Yes. These are passive subwoofers and require an external amplifier to operate. They are specifically designed to work with the Focal Impulse 4.320 amplifier, which powers both the subs and front speakers from a single unit.
The ISUB TWIN is designed for under-seat installation in cars, 4WDs, and commercial vehicles. Actual fitment depends on the available clearance under your specific seats — contact us to confirm suitability for your vehicle.
No vehicle modification is required. The hook-and-loop straps provide a secure, non-permanent fit straight out of the box. Screws are also included if you prefer a permanent installation.
Other premium options you might be interested in.
