JL Audio HD Series HD600/4 4-channel amplifier 150 watts RMS x 4 crossover high- and low-pass crossovers with

high- and low-pass crossovers with level controls

as well as an EVO 4 SERIES RF442 2-way long-range RF kit

One piece unibody core ensures maximum heat dissipation from LEDs to PCBBs

polypropylene parabolic cone with rubber surround

JL Audio HD Series HD600/4 4-channel amplifier 150 watts RMS x 4 crossover high- and low-pass crossovers withProduct highlights: 4 channel subwoofer amplifer 150 watts RMS x 4 (rated power from 1. 5 to 4 ohms) 300 watts RMS x 2 bridged (rated power from 3 to 8 ohms) variable high and low pass filter (50 500 Hz 12 or 24dB octave) subsonic filter and output polarity control removable power and speaker plugs optional wired remote for level control optional HD stacking kit for stacking multiple HD amps together Class D amplifier design MOSFET power and output