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The Master Audio Diagnostic
Don’t start buying new gear yet. Most car audio problems are simple wiring errors or settings mistakes. Follow this diagnostic flow to find the exact point of failure in your system.
Step 1: Pick your main symptom
🔇 Silent / No Bass
The system has power, but the subwoofers aren’t moving at all.
⚡ Amp Warning Light
My amp is showing a Red, Orange, or Blinking protect mode light.
🔊 Weak / Distorted
The sub works, but it sounds scratchy, quiet, or pops during bass hits.
🔌 New Installation
I haven’t powered it on yet and want to make sure I don’t blow anything.
Step 2: The Logic Flow
Check the Heart (The Amp)
Is the amp getting 12V power, a solid ground, and a 12V remote signal? If the amp doesn’t turn on, use a multimeter to check the terminals. No lights = electrical failure.
Check the Signal (RCA & Head Unit)
If the amp is on, is it getting music? Swap your RCA cables or plug a ‘3.5mm to RCA’ adapter into your phone and directly into the amp. If the sub plays from your phone, your radio or RCAs are the problem.
Check the Load (Sub Wiring)
Use a multimeter to check the Ohm load at the speaker wires plugging into the amp. If it reads ‘Infinite’ or ‘0’, your sub is either disconnected inside the box or the voice coil is snapped.
Diagnostic FAQ
Why does my sub cut out when the volume is high?
What is the most common cause of failure?
Still Haven’t Found the Problem?
If you’ve run through the flow and still have no bass, reach out to us or join our community.
