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-   -   Help with HU amp (http://www.diyaudio.com/forums/car-audio/109389-help-hu-amp.html)

audiobahnkid592 2nd October 2007 06:50 PM

Help with HU amp
 
Do the head unit amps work like any other amp. EX. four postives for the speakers share the same negative?

Perry Babin 2nd October 2007 07:51 PM

No. All of the negatives are isolated for amps rated to produce more than ~5 watts into 4 ohms. In a standard head unit. There are actually 4 bridged amplifiers. The negative speaker wires have signal on them.

In most bridgeable amplifiers, the negative of one channel has signal and the positive is actually ground.


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