Car Subwoofer - Powered by PSU

[02ryan48]

I've gotten a psu and jumped it, i then tested the connections using a voltmeter and the resulting volt was 11.97 however it stopped working and after restarting it it only gives out 1v, what has happened?

Pictures of the subwoofer setup at the minute, however it does not currently work properly as the power supply i'm using does not output enough amps

 

[JackNaylorPE]

Speakers Amps are generally rated on RMS (root mean square) .... which averages out the load..... however the peaks can easily exceed the average resulting in clipping which can damage speakers.....

http/en.wikipedia.org/wiki/Clipping_%28audio%29

To demonstrate the effect, I find Fiona Fiona Apple's 1st album very good test for such behavior as her voice not only has wide vocal range but also a wide range of amplitude.

The audiophile "rule of thumb" is to use an amplifier rated at twice the speaker's rating.