Car Audio Help Needed

Doom Machine

Senior member
Oct 23, 2005
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stock 2005 honda civic, i just wanted to beef up sound a bit without spending much money.

bought 2 infinity reference 6x9's and an alpine t220 amp (50w rms pch)

i'm keeping stock headunit but only has 2 speaker outputs for rear, so i used the high input connections in the amp.

i have this older RF punch amp but only has preamp inputs, i want to somehow take my 2 existing speaker ouputs and produce an extra 2 ouputs for preamp while retaining 2 others for my alpine amp for 6x9's

if i just wire 2 rca jacks together along with alpine inputs i get no sound, they mute each other for some reason plus i know its not good to have high ouput on preamp anyway..it pops on start.

is there some kind of high ouput to preamp converter i can use?
and how would i make 4 ouputs from 2 that wont mute each other out? i assumed wiring 4 ouputs to the original 2 would just split them all seperatly but is there a converter for this?

also fyi i'm not exactly sure which head unit rear ouputs are + and -
right channel is pink and blue/white other is blue/black and blue white if i recall and i really dont want or need another head unit.
 

Raduque

Lifer
Aug 22, 2004
13,140
138
106
I'm not sure what you're describing here. Your head unit has RCAs that are rear-speaker outs only? And you're trying to wire them into the high-level (speaker level) inputs on your amp?

What you can do is run your line-level RCA outputs to the amp for the rear speakers (assuming those RCAs are rear-channel only). Then use this to wire your front-channel speaker level outs from your head unit to your amp that only has RCA inputs.

Edit: Possible Honda Civic wiring harness colors.
 

Doom Machine

Senior member
Oct 23, 2005
346
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*eidt

oh i see your link now...that converter is what i'm looking for....now i wonder what would happen if i wired that converters 4 inputs into my 2 existing stereo ouputs...would they mute each other out?
 

Raduque

Lifer
Aug 22, 2004
13,140
138
106
Originally posted by: Doom Machine
*eidt

oh i see your link now...that converter is what i'm looking for....now i wonder what would happen if i wired that converters 4 inputs into my 2 existing stereo ouputs...would they mute each other out?

Why are you trying to wire your speaker outputs back into your HUs RCA outputs? that's not going to work one bit. You run an amp directly off the RCA outputs, and then you run the speaker wire outputs into the converter and RCAs from the converter to another amp.
 

Doom Machine

Senior member
Oct 23, 2005
346
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0
Originally posted by: Raduque
Originally posted by: Doom Machine
*eidt

oh i see your link now...that converter is what i'm looking for....now i wonder what would happen if i wired that converters 4 inputs into my 2 existing stereo ouputs...would they mute each other out?

Why are you trying to wire your speaker outputs back into your HUs RCA outputs? that's not going to work one bit. You run an amp directly off the RCA outputs, and then you run the speaker wire outputs into the converter and RCAs from the converter to another amp.

thats not what i'm doing at all, my HU has no rca ouputs, only stereo..i'm using those 2 as inputs on alpine amp but need preamp for fosgate amp and wasnt sure if a converter existed

i did find today a kicker 2 way crossover with high level inputs and 4 preamp ouputs...so it will convert it for me and give me the other ouputs for my punch amp...$70 bucks though but its probably the best option since i need to cut some bass from 6x9's anyway
 

fisheerman

Senior member
Oct 25, 2006
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Originally posted by: Doom Machine
Originally posted by: Raduque
Originally posted by: Doom Machine
*eidt

oh i see your link now...that converter is what i'm looking for....now i wonder what would happen if i wired that converters 4 inputs into my 2 existing stereo ouputs...would they mute each other out?

Why are you trying to wire your speaker outputs back into your HUs RCA outputs? that's not going to work one bit. You run an amp directly off the RCA outputs, and then you run the speaker wire outputs into the converter and RCAs from the converter to another amp.

thats not what i'm doing at all, my HU has no rca ouputs, only stereo..i'm using those 2 as inputs on alpine amp but need preamp for fosgate amp and wasnt sure if a converter existed

i did find today a kicker 2 way crossover with high level inputs and 4 preamp ouputs...so it will convert it for me and give me the other ouputs for my punch amp...$70 bucks though but its probably the best option since i need to cut some bass from 6x9's anyway

im not sure what amps you are running but my rockford has preamp inputs and a set of preamp outputs for daisy to another amp.

it is the p450.4 model

-fish
 

Raduque

Lifer
Aug 22, 2004
13,140
138
106
Originally posted by: Doom Machine
Originally posted by: Raduque
Originally posted by: Doom Machine
*eidt

oh i see your link now...that converter is what i'm looking for....now i wonder what would happen if i wired that converters 4 inputs into my 2 existing stereo ouputs...would they mute each other out?

Why are you trying to wire your speaker outputs back into your HUs RCA outputs? that's not going to work one bit. You run an amp directly off the RCA outputs, and then you run the speaker wire outputs into the converter and RCAs from the converter to another amp.

thats not what i'm doing at all, my HU has no rca ouputs, only stereo..i'm using those 2 as inputs on alpine amp but need preamp for fosgate amp and wasnt sure if a converter existed

i did find today a kicker 2 way crossover with high level inputs and 4 preamp ouputs...so it will convert it for me and give me the other ouputs for my punch amp...$70 bucks though but its probably the best option since i need to cut some bass from 6x9's anyway

I don't understand what you mean by "Stereo" outputs then. Most, if not all HUs use RCAs as the connector for the outputs.

Either way, what you're going to need to do is wire your speaker wires themselves to the line-level converter, then RCAs from the converter to the amp.