Amp wiring question - Chevy Impala SS Forum
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post #1 of 14 (permalink) Old 12-20-2006, 12:21 PM
Caddylack
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Okay... so I'm running two amps. Do I have to run two sets of RCA cables (one for each amp) to the head unit? Or, can I run one set of RCA's to the head unit, and another set between the two amps?

If I can just connect the two amps... I'm gonna feel rediculous for cutting the only other RCA cables I had...
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post #2 of 14 (permalink) Old 12-20-2006, 02:04 PM
gvillepoet
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ask fourdrvet...i think thats how his name is spelled. he works at a shop and puts music in. not to mention he has a cadi like yours which hes done music many times for...you can look him up.
my opinion is never cut them. just get a splitter at the amps and run it from there. unless u have a specific sub RCA output. and highs RCA output.
post #3 of 14 (permalink) Old 12-20-2006, 02:17 PM
spellman
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What are the two amplifiers for?
Is one for speakers? (ie 4ch)
And one for subwoofers?
 
post #4 of 14 (permalink) Old 12-20-2006, 02:35 PM
jromoss
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The way i have it in my car is 1 set of RCA's for the amp that runs the highs and the other set for the amp that runs the subs.
post #5 of 14 (permalink) Old 12-20-2006, 02:45 PM
Caddylack
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I have one amp running the speaks and one amp running the subs. I just got the subs/second amp, so I'm just wondering if I need another big long RCA cable to run to the HU or if I can just use a short RCA and connect to the existing amp.
post #6 of 14 (permalink) Old 12-20-2006, 03:31 PM
bbodyguy
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If your head unit has sub utputs, run the rca's this will let you adjust the sub level from your headunit, plus it may be crossed over so that all the lows are going to the sub.
So short answer: Run the other set of rca's back!
post #7 of 14 (permalink) Old 12-20-2006, 04:10 PM
Caddylack
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Before I got the subs, I had the RCA's plugged into the "Pre-out rear" lead on my head unit. I was thinking I should put the sub amp on the pre-out rear lead, and the speaker amp on the pre-out front lead. But... my head unit does have a subwoofer RCA lead also... so should I run the sub amp into that lead?
post #8 of 14 (permalink) Old 12-20-2006, 04:25 PM
maesstro
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Yes, run the sub out from the head unit to the amp that will be powering your subs. If you are going to add another amp later (say for example, your current amp is a mono output and your splitting the signal to two subs, but it was onle meant for one) to power the subs, then at that point you could run an rca from this amp to another. The front and rear rca outputs on your headunit generally are for the front and rear speakers. If you have a 4 channel amp, you should be able to run both of those into the same amp (just remember which is which) so you can use the fade and balance feature if you need to, assuming both your front and rears are powered by the amp.
post #9 of 14 (permalink) Old 12-20-2006, 07:53 PM
Caddylack
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I have my rear 6x9s running off the amp and the front speakers and tweeters running off the head unit. The amp is only a 2 channel.

Thanks everyone for answering my question.
post #10 of 14 (permalink) Old 12-28-2006, 12:55 PM
89mikeSS
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I have my door speakers and my 6x9's running off a 2000 watt 4 channel amp. I have my sub running off a 4000 watt 2 channel amp. I only have one RCA cable running to the amps in the back. Then I have the RCA cable split three times. It seems to work ok, but I keep getting problems with static comming through all of the speakers. My headunit only has one output on it, thats why i did it like that. Does anybody know a better way of doing this, other than getting a new headunit and running three RCA cables to the back?
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