Focal ISUB ACTIVE 2.1 – 8 Ultra-Compact Underseat 2-Ch Amplified Subwoofer 260W. AMPLIFIED SUBWOOFER 2.1. The ISUB ACTIVE 2.1 subwoofer is the perfect way to complete any factory audio system by bringing powerful (260W) and dynamic bass as well as amplifying the vehicle’s front channels (2.1). It connects to the HP outputs of the car radio through the Plug & Play cable supplied by Focal to genuinely enhance the sound experience, without taking up any space in the cabin or boot. Measuring 21/2 (6.3cm) high, it slides easily underneath a seat, even a tightly fitting one. Thanks to the different settings available, you can customise the sound reproduction as you wish. A wired remote control is also provided for users to adjust the bass level as desired. VARIOUS OPTIONS FOR ADJUSTING THE SUBWOOFER AND AMPLIFIER. For perfect harmony with your audio system. Adjustable input signal level. Amplifier crossover adjustable from 50 to 150Hz. High-pass crossover adjustable from 20 to 50Hz. Volume increase from 0 to 18dB. Phase selector 0-180°. Low-pass crossover adjustable from 50 to 180Hz. Type 8 ultra-compact amplified subwoofer & 2-channel amplifier. Frequency response 45Hz – 150Hz. Subwoofer phase 0 or 180°. Maximum power amplifier 2 x 110W. Nominal power amplifier 2 x 55W RMS. Dimensions (L x W x H) 127/8 x 91/16 x 21/2 (328 x 230 x 63 mm). Weight 9.6lbs (4.25kg). Ready to use (ISO Plug & Play cable supplied). Compact product, discreet integration. Various setting options adjustable incoming signal, adjustable amplifier crossover, volume boost, etc.