The GM-A5702 and GM-A3702 are bridgeable two-channel power amplifiers that can be paired with Pioneer's pre-amps or head units.
This manual provides safety guidelines and installation instructions for the Pioneer GM-A5702/3702 bridgeable two-channel power amplifier. It covers precautions for connecting the unit, grounding requirements, and fuse specifications. The manual also includes setup instructions for adjusting the low-pass filter, frequency control, bass boost, and gain settings. Safety warnings are emphasized, including volume control to protect hearing and proper grounding to prevent fire or malfunction.
Use a special red battery and ground wire RD-223, available separately, to connect the battery positive terminal and car body ground.
Set the LPF switch to ON when connecting a subwoofer to eliminate high frequencies, or OFF for full-range speakers to output the entire frequency range.
The amplifier shuts down if the speaker output is short-circuited, DC voltage is applied to the speaker output, or internal temperature becomes too high. Check power supply and speaker connections, then contact your dealer if the cause is unclear.