Cerwin Vega Amplifier Xed Series 1 Ch Mono 600W 321041 13344A Impact Adaptor with Ball Size:Adapters 13344A Impact Adaptor with Ball 3 8 in F x 1 2 in M x 32 82 APX4 SET 4IN 2 WAY COAX SPEAKERS APX 4 features a concentric coaxial tweeter: with one single point of sound emission it is possible to obtain a consistent in phase response 0V Impedance Low Input Level: 20 KO Impedance High Input Level:100 KO Output Impedance: 2O Damping Factor (50Hz at 4O): 70 Bandwith ( 3dB): 10Hz 250Hz Crossover ( 12dB Oct) Varile High Pass: not available Crossover ( 12dB Oct) Varile Low Pass: 35Hz 250Hz Crossover ( 12dB Oct) Varile Sub Sonic: 10Hz 50Hz Fuse Rating ATC (inside): 2x 30A Dimensions: 180mm x 120mm x 46 Features: Latest High Efficiency Class D Topology Compact Size with Ambient backlit logo RCA Pass Thru output for easy system expansion Fully Variable Crossovers (12dB per octave) Handles HI and LO level input to 12V 2O Stable Stereo and 4O Mono (CH3 4) for 3 Ch mode Proprietary Vega Bass Boost EQ Up To 12dB