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  #21  
Old 04-12-2013, 11:11 PM
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The Alpine sub is a dual voice coil sub and the factory harness has 4 wires going into it. Is that one pair of wires for each voice coil?

If so, how did you feed the signal to your aftermarket amp? Did you just use the signal from one set of voice coils?
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Old 04-12-2013, 11:16 PM
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I added a bare wire/RCA harness. There are four wires going to the stock sub, a left and a right feed. So one pair translates to one single RCA. Both pairs equates to two RCA's. then I just plugged these RCA's into my amplifier that was designed for this application.
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  #23  
Old 04-12-2013, 11:24 PM
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Quote:
Originally Posted by ironchef2011 View Post
I added a bare wire/RCA harness. There are four wires going to the stock sub, a left and a right feed. So one pair translates to one single RCA. Both pairs equates to two RCA's. then I just plugged these RCA's into my amplifier that was designed for this application.
Why would there be a left and right feed going to the sub? The amp is not in the sub. The OEM Alpine amp should be mixing the left and right feed and sending one signal to the sub.

It makes sense that you could trick your aftermarket amp by feeding it one pair as a left feed and the other as a right feed.

As for the harness, I bought the same connector the factory uses and I'm going to make a harness that plugs into the truck and has RCA connectors on the other end.

Last edited by jeepguy; 04-12-2013 at 11:26 PM.
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Old 04-12-2013, 11:37 PM
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Sorry for the confusion. What I meant by right and left feed was for the RCA, not the sub. The factory amp, not located in the sub, send two pairs of outputs to the single, dual voice coil sub.

Like you, I also sourced a stock harness connector and then wired it into a pair of RCA's.
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Old 04-12-2013, 11:59 PM
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This is the OEM wiring diagram. Is this what you did?

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Old 04-13-2013, 12:18 AM
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Exactly. I disconnected the entire factory sub enclosure and unhooked the wire harness which is under the enclosure. I then connected my new harness and solder/heatshrunk the new RCA ends.
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Old 04-30-2013, 08:04 PM
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Quote:
Originally Posted by ironchef2011 View Post
Exactly. I disconnected the entire factory sub enclosure and unhooked the wire harness which is under the enclosure. I then connected my new harness and solder/heatshrunk the new RCA ends.
I just made the harness: http://www.ramforumz.com/showpost.ph...68&postcount=6
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Old 05-02-2013, 12:45 AM
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[QUOTE=jeepguy;1068196
As for the harness, I bought the same connector the factory uses and I'm going to make a harness that plugs into the truck and has RCA connectors on the other end.[/QUOTE]

Where did you buy the harness for the sub? Any part #?
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Old 05-15-2013, 11:10 AM
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What turns the amp on and off? Remote wire? Or does this amp turn on and off through the RCA's? Another question is there is no line level converter. Isnt the feed coming from your connector you made an amplified signal?

Jeff

Last edited by velocityss1985; 05-15-2013 at 11:19 AM.
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  #30  
Old 05-16-2013, 10:32 AM
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I still need to get a signal from the CANbus to control the amp. Various companies make such adapters.

JL amps allow for speaker level inputs, so this should be OK. I could get a line level input from the back of the OEM amp, but that would be more work.
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