Underseat subwoofer Infinity BassLink SM2 8-inch 200W under-seat car subwoofer

The Infinity BassLink SM2 is an underseat subwoofer with an 8-inch driver and 200 W power designed to add low-frequency extension to a car audio system without occupying trunk space. Created for installation beneath a vehicle seat, it provides discreet bass reinforcement for music and multimedia playback while fitting compact interiors and tight installation locations. The compact enclosure and mounting points make it suitable for vehicles where a conventional subwoofer box would be impractical.

Advantages

The underseat design delivers deeper bass response from a small footprint, improving low-end clarity and impact without major modifications to the vehicle interior. A dedicated 8-inch driver and 200 W power handling ensure consistent performance at typical listening levels, while the low-profile enclosure allows placement under the passenger or rear seats. Integration with factory or aftermarket head units is straightforward, allowing for better balance of bass within the existing audio system.

Suitable for

• Compact cars and hatchbacks where trunk space is limited
• Drivers seeking discreet bass enhancement without a large subwoofer box
• Installation under front or rear seats to maintain cabin space
• Upgrading factory audio systems for improved low-frequency response

Key specifications

• Driver size: 8-inch woofer designed for underseat installation
• Power handling: 200 W (nominal) for typical in-car bass levels
• Enclosure: low-profile sealed/mounted case suitable for placement beneath vehicle seats
• Frequency focus: low-frequency extension optimized for car interiors
• Installation: designed for space-limited mounting with integrated brackets or feet

How to use

Position the Infinity BassLink SM2 under a compatible vehicle seat following the manufacturer’s recommended mounting orientation and secure it using the provided hardware or recommended brackets. Connect the unit to the car audio source using the appropriate low-level (RCA) or high-level inputs as required by the vehicle’s head unit, and set the gain, crossover, and phase controls (if present) to match the existing speakers. Verify mounting does not restrict seat movement or compromise seatbelt anchors and ensure wiring is routed safely away from moving parts.

Usage recommendations

For balanced results, set the subwoofer crossover to blend with the main speakers (commonly around 60–100 Hz) and adjust gain to match system loudness without distortion. Use secure mounting and correct wiring practices to maintain safety and long-term reliability.