Rockford Fosgate T500-1bdCP Motorcycle Audio use the M400/4 by itself

use the M400/4 by itself to power two satellites

THD+N @ Rated Power (Subwoofer Channels) <1% @ 2 ohms per Ch

High-Level: 4-Pin Molex Signal Output Low-Level: 2 RCA (Pass-Thru active with RCA or Hi-Level input) Tone Controls 0 to +18 dB @ 45 Hz Crossover Controls Low-Pass: 50 Hz - 250 Hz @ 12dB/Octave Butterworth

7 mm) CEA-2031 Compliant CEA-2031 Guidelines Frequency Response (Hz) 120Hz - 22kHz Power Handling (RMS) 20 Watts RMS / 40 Watts Max Crossover N/A - Tweeter has built-in crossover Sensitivity (dB @ 1W/1M) 85 dB Grille/Trim Ring Included No Mounting Hardware Yes Shipping Weight 2

Potentiometer No Filter Defeat Function No Infrasonic Filter No Bass Boost EQ Yes Output Polarity Switch No Remote Subwoofer Level Control Optional (RBC-1) Remote Bass EQ Boost Control No Pass-Through Preamp Output Buffered

Rockford Fosgate T500-1bdCP Motorcycle Audio use the M400/4 by itselfThe Power T500 1bdCP is a 500 Watt mono amplifier featuring Constant Power delivering up to 25% more power across all impedance loads. The frequency response of the T500 1bdCP is optimized exclusively for use with subwoofers. The T500 1bdCP is based on the legendary T500 1bd amplifier design with a proprietary "Constant Power" configuration delivering up to 25% more power (Watts) across all impedance loads. The listening experience is cleaner, louder