Do you have a question about the ESX Signum Series and is the answer not in the manual?
Verify connections, fuses, voltage, and ground for amplifier operation.
Address shorts, low impedance, or overheating issues causing red protection light.
Verify RCA input connections and test for AC voltage to ensure audio signal.
Diagnose popping noise by disconnecting signal or using a delay turn-on module.
Route cables away from power/ground, bypass components, or improve grounding.