Troubleshooting Reference Hub

Use this hub when the system is already built and something is wrong. Start with the symptom that matches what you hear or measure, then move into the deeper diagnostic page once you know which subsystem is most likely involved.

Fast Triage

• Noise and Signal Symptom Quick Reference for whine, hiss, pops, and source-related faults.
• Electrical and Power Symptom Quick Reference for dead batteries, dimming lights, fuse failures, and supply-voltage collapse.

Noise And Interference

• Alternator Whine
• Ignition / Engine Noise
• Amplifier Hiss
• Turn-On Thump / Pop
• Finding Rattles and Buzzes

Amplifier, Speaker, And Signal Path Faults

• Amplifier Won't Turn On
• Amplifier in Protection Mode
• Amplifier Runs Excessively Hot
• One Channel Dead
• Diagnosing a Blown Speaker
• Subwoofer Over-Excursion
• Subwoofer Voice Coil Thermal Damage

Electrical And Source Problems

• Headlights Dimming with Bass
• Parasitic Battery Drain
• Repeatedly Blown Fuses
• Burning Smell from Wiring
• Head Unit Won't Power On
• Head Unit Resets on Bass Hits
• Bluetooth Audio Drops or Stutters
• USB Drive Not Recognized