Nothing increases the sound quality of your car stereo system more than a subwoofer. But what if you have a small roadster or you simply cannot devote the necessary space in your trunk to a subwoofer and amplifier?

These amplified subwoofers will add bass while you hide them under or behind your seats.

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Subwoofers

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Powered enclosed subwoofer The passive radiator technology is one of the keys to the surprisingly big sound of the KSC-SW1. Air pressure from the powered woofer moves the unpowered 6-1/2" radiator, augmenting the bass response.	Powered Subwoofer SIR-PS1 The compact SIR-PS1 delivers plenty of punch — its 8" subwoofer is teamed up with an 80-watt amplifier, while a second 8" non-powered speaker augments the sound output. You'll enjoy strong, clear bass without giving up a lot of space. 8" powered subwoofer with 8" passive radiator
Kenwood KSC-SW1 Amplified Subwoofer Features Compact, Easy-to-Hide Enclosure Built-in 75W RMS / 150W Peak Power Amplifier 6 1/2" Concave Cone Drive Unit Subwoofer 6 1/2" Passive Radiator Variable 50-120 Hz Low-Pass Crossover RCA & Speaker Level Inputs Switchable Phase Control Wired Remote Control Included Frequency Response: 35–120 Hz dimensions: 15-3/4"W x 3-11/16"H x 9-1/16"D	SIR-PS1 Amplified Subwoofer Features compact powered subwoofer 8" woofer and 8" passive radiator built-in 80 watts RMS amplifier (peak power: 160 watts) frequency response: 20-200 Hz variable low-pass crossover (70-160 Hz) variable phase control (0-180°) power/ground wiring harness included preamp- and speaker-level inputs dimensions: 8-5/8"W x 11-1/16"H x 11-5/8"D1 x 8-1/2"D2
Note: This model has been very popular for "under the seat" installation in vehicles like the Mazda Miata.	Note: This is an excellent model for back seat installation. Fits easily on the floor behind your driver's seat.
*Want the ease of installation of an amplified sub for your trunk or rear cargo compartment, check out our full variety of* *Special TUBE Subwoofers*