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The Daily Insight

What causes subs to stop working?

Author

Christopher Pierce

Published Apr 17, 2026

What causes subs to stop working?

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.

Can a subwoofer be set to large without a sub?

If they are all set to Large there will be no sub signal (unless the receiver also offers a subwoofer mode like ‘both’ or ‘lfe+main’). I have changed all other speakers to small and no luck.

How do I set the subwoofer volume level?

you came accoss the answer in your last post. Using AVIA, put the subwoofer test tone ‘Left Speaker + Sub’ on a continual repeat by selecting ‘Repeat Patteren On’ from the main screen, then use that one test tone alone to calibrate your sub level using your meter. The sound will alternate back and forth between your sub and your left front speaker.

Why does my AVR have no subwoofer output?

One of the most common scenarios is where the user has a 5.1 speaker system, but the AVR Receiver does not allow subwoofer output in 2-channel. Another is when the user has large bass capable main speakers but they experience no bass output, in 2-channel mode, to the subwoofer if the main speakers are configured large.

What should I do if my subwoofer is not working?

1) Sub not working (if you hear a soft muffled thump when you turn the sub on, it should be ok.) 4) Make sure you are using digital connections from the source to receiver. If you are using analog, you should have 6 wires going to the Ext.

Set the volume on the back of the active subwoofer to the middle position. If the subwoofer has a cut off frequency adjustment, set it to the maximum position to pass all low frequencies to the subwoofer. If your subwoofer has a standby function, turn it off.

What does it mean if your Mobo has no subwoofer?

No Center, No Rears. No Subwoofer, in your case it means your subwoofer will NOT be connected to the Mobo’s SUB OUT jack. LARGE = Full Range, same thing. What are the choices under 5.1 SPEAKER? You don’t have 5.1, you got 2.1. No Center, No Rears. No Subwoofer, in your case it means your subwoofer will NOT be connected to the Mobo’s SUB OUT jack.

Why is my subwoofer not working on my VSX?

Routing all of your bass to the sub will relieve the stress from your receiver’s amp section. It takes a huge amount of power to amplify bass signals. This will clean up the mids and highs so that all of the sound is cleaner. Thanks for the above reply – it helps me understand some basics.

Why do I not get thumping sound from my subwoofer?

If you do not hear a thumping sound then there is a possible service issue with the subwoofer. Connect the other end of the subwoofer cable to the subwoofer audio output connector on the back of the receiver. NOTE: Some receiver models may have two outputs to drive two subwoofers.