ok im installing a 8" sub in my teg. I have a pioneer DEH-P4100 headunit. It has 2 RCA hookups on the back, which one do i use? Also the sub has power but no signal? Any ideas??? Thanks

 

ummmm, not to make you feel stupid, but you do know that you need to go thru an amp right?

 

dude i know that lol

 

Damn... That deck is old..

Anyways... You can use either set of RCA's. That deck has 2 sets; front & rear. Most people use the rears though...

And what do you mean "the sub has power but no signal"?? Do you mean that you can see the power light illuminate but you have no sound?

What amp are you using to power your sub?

 

The amp has power but the sub has no sound. We have tried both of the RCA's the amp is a dual 300 watt with a built in crossover and it worked fine in another vehicle a few weeks ago. Thanks

 

A Dual, could have gone west when it was disconnected from the last car.
The first thing I would do is test for output on the HUs RCAs, it's easy, use any speaker, [not a sub] and connect the RCA to the speaker terminal, you can do this by just touching the RCAs center pin, [signal] to one of the speaker terminals and the outside barrel, [signal return] to the speakers other terminal, unplug the other speakers, hold "test speaker" to your ear and turn up the volume, if you hear something, [it will be loud enough to hear] the RCA outputs are good, if not they are bad. 94

 

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You're high. Nothing like that could happen with state of the art Dual equipment.