hookin up 4ch amp w/ stock hu?

all motor K'S · 01-29-2008, 01:29 AM

i was planing to hooh a amp to my hi's with the stock hu and i don't want to cut the wires on the factory harness has any1 done this? i think that u can do it where the harness comes from the hu to where it go factory amp to a LOC then rca to amp then speaker wires from amp to a amp bypass to get the feed to speakers without rewiring the whole car. can someone tell me if they think it will work?

all motor K'S · 01-29-2008, 01:52 AM

this is a diagram that i think will help

Duce2k · 01-29-2008, 12:07 PM

I think there was a DIY somewhere on the site for that, you can do a search, I think the output from the premium stereo is low level so you won't need an LOC if you're bypassing the factory amp

Mulk · 01-31-2008, 03:15 PM

Actually the factory HU outputs on the EX and Si aren't speaker level or line level (RCA) they're actually differential balanced low level outputs, so you cant use a regular LOC, you need a differential balanced LOC i believe theres one by peripherial vendetta. You could also get a 4ch amp that has differential balanced inputs, however there are few models that have that

***infinite0216*** · 01-31-2008, 04:03 PM

i kno i had this installation place use all my stock headunit to connect my amp and single sub. i'll look at the wiring when i get a chance and let you know on what i think they did.

all motor K'S · 01-31-2008, 08:37 PM

that would be great. infinite did u have them put a amp on ur highs too? the problem that i have ie that my sub out power my highs big time and i hate that so much. I'm just tryin not to cut the wire harness

trystar · 01-31-2008, 08:38 PM

if you stop at best buy, they have all the harnesses you need so that you won't have to splice up the wires.

***infinite0216*** · 01-31-2008, 10:59 PM

Quote:

Originally Posted by all motor K'S

that would be great. infinite did u have them put a amp on ur highs too? the problem that i have ie that my sub out power my highs big time and i hate that so much. I'm just tryin not to cut the wire harness

you know the wire to comes into the stock sub? well basically what they did was, they cut that wire so disconnect the stock sub, then ran a wire from the wire they just cut to the amp. from the amp to the sub. then just powered everything thru the amp/battery. i'll try to get pictures tomorrow if i have time.

teljoundi · 02-02-2008, 10:28 PM

which stock head unit do you have? makes a diffrences in where the factory amp is located

all motor K'S · 02-02-2008, 11:40 PM

Quote:

Originally Posted by teljoundi

which stock head unit do you have? makes a diffrences in where the factory amp is located

i have the reg. one no nav

01-29-2008, 01:29 AM	#1 (permalink)
all motor K'S Senior Member Join Date: Nov 2006 Location: fontana Posts: 150 iTrader: 0 / 0%	hookin up 4ch amp w/ stock hu? i was planing to hooh a amp to my hi's with the stock hu and i don't want to cut the wires on the factory harness has any1 done this? i think that u can do it where the harness comes from the hu to where it go factory amp to a LOC then rca to amp then speaker wires from amp to a amp bypass to get the feed to speakers without rewiring the whole car. can someone tell me if they think it will work?

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01-29-2008, 12:07 PM	#3 (permalink)
Duce2k Senior Member Join Date: Apr 2007 Location: Houston, TX Posts: 2,711 iTrader: 1 / 100%	I think there was a DIY somewhere on the site for that, you can do a search, I think the output from the premium stereo is low level so you won't need an LOC if you're bypassing the factory amp

01-31-2008, 03:15 PM	#4 (permalink)
Mulk Junior Member Join Date: Apr 2007 Posts: 16 iTrader: 0 / 0%	Actually the factory HU outputs on the EX and Si aren't speaker level or line level (RCA) they're actually differential balanced low level outputs, so you cant use a regular LOC, you need a differential balanced LOC i believe theres one by peripherial vendetta. You could also get a 4ch amp that has differential balanced inputs, however there are few models that have that

01-31-2008, 04:03 PM	#5 (permalink)
*infinite0216* Sambos \| We the BEST! Join Date: Jan 2007 Location: Perris, CA Posts: 1,275 Andy iTrader: 11 / 100%	i kno i had this installation place use all my stock headunit to connect my amp and single sub. i'll look at the wiring when i get a chance and let you know on what i think they did.

01-31-2008, 08:37 PM	#6 (permalink)
all motor K'S Senior Member Join Date: Nov 2006 Location: fontana Posts: 150 iTrader: 0 / 0%	that would be great. infinite did u have them put a amp on ur highs too? the problem that i have ie that my sub out power my highs big time and i hate that so much. I'm just tryin not to cut the wire harness

01-31-2008, 08:38 PM	#7 (permalink)
trystar Senior Member Join Date: Jan 2007 Location: Cypress - Houston TX Posts: 919 Tam Ngo iTrader: 5 / 100%	if you stop at best buy, they have all the harnesses you need so that you won't have to splice up the wires.

02-02-2008, 10:28 PM	#9 (permalink)
teljoundi Junior Member Join Date: Feb 2007 Location: charlotte, nc Age: 25 Posts: 10 iTrader: 0 / 0%	which stock head unit do you have? makes a diffrences in where the factory amp is located