problem with sub/amp I'm too stupid to solve...

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Sub has stopped making any noise I have tried everything I can think of or look up, it should be working. Let me explain;
Have checked ohm both subs they are both around 4.

checked the power at the amp connectors all reading round 12v

Visually inspected all fuses and have taken out all wires and checked them

There is no break in the connections, the earth is ground back to bare metal and close to amp

Protect light not on on the amp

Power light on on amp

I can't think of anything else please save me
 
Have you tried a different set of signal cables to the amp running the sub?

Have you tried another input from the head unit to the amp running the sub to verify the sub input is working?

Did the subwoofer control accidentally get disabled on your head unit?

Some amps actually light up but are not turning on.

Have you tried the amp outside your setup to verify if it is working or not?
 
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