Open Box Power Acoustik RZR1-2500D Class D Monoblock Subwoofer Amplifier

Open Box Power Acoustik RZR1-2500D Class D monoblock designed for heavyweight subwoofer performance in a compact footprint. The amp uses a MOSFET power supply with audiophile grade IRTM transistors and a military grade SMT PCB to preserve dynamic response. Its shallow 4.75" chassis allows versatile installation locations while remaining stable down to a 2-ohm load. Protection and connectivity: built-in direct short, thermal and overload protection circuits safeguard the amplifier. Input options include 200mV-6V low level RCA inputs and a high level input with signal sense auto turn-on. A dash-mount gain control module is included for convenient adjustment. Crossover and tone controls: variable 12dB low pass filter (35-250Hz), variable 12dB subsonic filter (10-50Hz) and a variable 12dB 45Hz bass boost to enhance low-octave harmonics. Power and wiring: 900w x 1 at 4 ohms, 1,400w x 1 at 2 ohms, 2,500w max power. Terminals accommodate 12g speaker and 8g power/ground wiring. Measured performance: Total harmonic distortion: 0.5 percent. Frequency response: 10-150Hz. Signal to noise ratio: 80dB. Damping factor: >100.