Audio System Repair & Diagnostics in Old Town San Diego

We diagnose and repair audio system issues, alternator whine, blown speakers, intermittent power loss, distorted bass, dead amps, popping noises, ground-loop hum, blown fuses, intermittent CarPlay drops, factory-radio integration issues, and any wiring gremlin you've got. The diagnostic process always starts the same way: we listen to the symptom, replicate it on the bench or in the vehicle, and trace the issue back through the signal path until we find the root cause. Photos of every fault are documented before any repair work begins, so you know exactly what was wrong, why it happened, and what we're fixing. Common repairs include re-grounding amplifiers to clear alternator whine, replacing burnt voice coils on subs that were running over their RMS, re-tuning gains on amps that were running too hot, replacing aging RCA cables that pick up ignition noise, and tidying up wiring runs so the system runs cleanly. We work on systems regardless of where they were originally installed. Most diagnostics are same-day. Lifetime workmanship warranty on every repair.

• Alternator whine + ground-loop fixes
• Blown speaker replacement
• Amp re-tuning + gain matching
• Wiring overhauls on bad installs
• Photo proof of issue before repair

Old Town drivers, a 16-minute run up the I-5 to our Palm Avenue shop. Classic cars, daily drivers, and tour vans all welcome.

Old Town runs a unique vehicle mix, tour vans and trolleys for the historic park, daily-driver sedans for the Presidio Hills neighborhoods, and classic cars heading to weekend cruise spots. The I-5 south from Old Town Avenue gets you to 1610 Palm in about 16 minutes. Common Old Town installs include vintage radio restorations with hidden Bluetooth modules, classic-car audio upgrades that preserve original dash appearance, factory-look CarPlay retrofits for daily drivers built before 2018, marine audio for boats kept near the SD River channel, alarm systems for vehicles that park along Juan Street and Taylor, and dashcam installs for tour and rideshare vehicles. We also handle custom fabrication where modern speakers need to fit older door panels. Walk in any day, free quotes, financing through five lender partners.