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The Daily Insight

Why is my amp on but sub not working?

Author

David Ramirez

Published Mar 14, 2026

Why is my amp on but sub not working?

If your amp has a “protect” light, and it’s on, then chances are good that you have a faulty speaker, subwoofer, cable or another component. To check this, you can simply hook up a set of good RCA cables to your head unit and amp. If that causes the light to turn off, replacing the RCA cables will fix the problem.

Why is there no sound from my subwoofer?

There is no sound from an active subwoofer connected to the television. Follow this procedure to troubleshoot if there is no sound coming from an active subwoofer connected to the television. Ensure the subwoofer is connected to the MIX or SUB output on the stereo system or TV.

How to connect a subwoofer to a receiver without a speaker?

Example of a powered subwoofer with 2 types of signal inputs (speaker level and RCA jacks) along with sound controls. Note: Not all subwoofers have speaker level inputs, which makes it a problem connecting them to a receiver without a subwoofer output.

How do I get my subwoofer to work with my phone?

You want to make sure these speäkers work with eg your phone / iPod / media player. OK, this is the old style sub-satellites. To use this puppy, you send the stereo signal (L+R) to this sub box with an appropriate cable, then configure Realtek for 2.0, LARGE speakers.

Can a subwoofer be used without a crossover?

In order to produce clean-sounding bass without vocals or other sounds a subwoofer can’t properly produce, a low-pass crossover is used to allow only bass frequencies to pass & be produced. The problem comes when you try to connect a subwoofer to a signal without a crossover – it sounds terrible!

Why does my subwoofer stop working?

Short Circuit. The most common cause of speaker failure is short-circuiting. A short circuit in the wires providing the signal will prevent the signal from ever reaching the subwoofer. A short circuit at the terminals on the subwoofer will also prevent electrical current and signal from reaching the subwoofer.

Why are my external speakers not working?

For external speakers not working in Windows 10, there are several reasons causing this problem. The speakers could be damaged, the sound could be muted, the audio driver could be faulty and so forth. If you encounter this problem, follow tips here to troubleshoot the problem and find the solution that works for you.

Why do speakers stop working?

Poor speaker connections or broken wires can at times make your speakers stop working. Wires that pass through areas like doors and windows are usually the most prone to breakage. Make sure that your wires pass through areas where they experience the least disturbance.