Infinity Kappa 1000W Kappa Series 10" subwoofer with selectable 2- or 4-ohm impedance at Crutchfield
Customer Reviews: Infinity Kappa Four 1000W Class D Bridgeable Multichannel Amplifier Kappa Four - Best Buy
These are the specs of my Sub(Infinity Kappa 1000w) paired with xm-gs100 amp, everything set to 4ohm, i find the bass to be lacking and it's all boomy even this feels empty,
Infinity Kappa K1000 1000w RMS Mono Amplifier Car Audio Sub Amp 2-ohm Class-D | Audio Savings
Infinity Kappa One K Mono subwoofer amplifier — 1,000 watts RMS x 1 at 2 ohms at Crutchfield