Hi,
First of all this audio system is on a boat.
Clarion CMS1 headunit, an Alpine KTP-445U amplifier powering 2 Alpine SPR-M700 (bridged mode) and another Alpine KTP-445U amplifier powering 4 Alpine SPS-M600.
Inputs = Low Level RCA.
Power = Direct to boat battery via 8 AWG
Ground = Direct...