Sound Storm SX210 2 way Car Electronic Crossover with Remote Subwoofer Control Variable Bass Boost, Selectable Phase Output Voltage: 8 Volt Max 2 Channel Inputs, 2.1 Outputs Variable High Pass & Subwoofer Filters 12 dB / Octave Filter Slope Dimensions: 7-3 / 8 (L) x 7-1 / 4 (W) x 1-5 / 8 (H) Remote Subwoofer Control 1 Year Warranty