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The Red 09-04-2013 09:14 PM

New Member, new 2013 R/T ALPINE....where to hook up LOC for sub?
I just recently purchased a 2013 R/T with the ALPINE system and am adding a mono amp and subwoofer. I need to know where the best place is to tap into for the LOC for signal to the amp. After searching countless threads I am confused. Some have said door speakers, others have said rear speakers. Just looking for some clarification and suggestions. Thanks in advance!

ttredraider78 09-04-2013 09:45 PM

1 Attachment(s)
tap into the wires for the rear speakers on the factory amp on the driver's side just above the emergency brake. the factory amp is mounted vertically. Don't remember the wiring scheme but im sure someone on here can chime in. No line output converter needed!

The Red 09-04-2013 10:37 PM

Are you tapping into the speaker output wires from the factory amp to the rear speakers or between the HU and factory amp?

ttredraider78 09-05-2013 10:13 AM

Between the factory amp and the head unit. Either way it really doesn't matter. The bundle of wires plugged into the amp are right there for you to access. You have to strip back some of the black adhesive tape to access the wires well. BTW, a local, well respected audio shop told me to do it this way if it makes you feel any better. I have had no issues for over a month now and sounds excellent and like I said no LOC.

gcscott 09-05-2013 10:30 AM

I have a mono amp tied into the wiring at the subwoofer under the rear passinger seat. Both left & right channels are there.

Here is my install thread.

The Red 09-05-2013 10:50 PM

Just realized that my mono amp has 4 speaker level inputs. My understanding of the factory Alpine system is that it is actively crossed in surround sound. So the question now is which speaker or speakers to draw from. One door speaker, both door speakers, one rear speaker, both rear speakers, or all 4?:4-dontknow:

ttredraider78 09-06-2013 10:10 AM

I would say both of your rear speakers as you still want the right/left signals. The alpine crossover really doesnt matter because it will will more than likely be way higher than what frequency you will crossover your sub at. I tapped the 2 rear speakers and used a JL adapter to turn the speaker wire into RCA's. My amp accepts hi/low level inputs which is why I did not need a LOC. Also my amp has signal sensing so there was no need to run a remote turn-on wire. Newer amps have features that make them much easier to integrate into a factory system.

kkreit01 09-06-2013 10:05 PM

You should have a factory sub. It is DVC, and has 4 wires going to it. Tap into it there. I can get you the color codes if you need it. It's by far the simplest and best solution. What kind of LOC? If you don't tap into OE sub, and next best place is front 6x9 mids. If you ever want a full-range signal, it's back to the drawing board.

ttredraider78 09-07-2013 03:27 PM

The regular cab R/T's don't have factory subs unfortunately.

Apacheav8tr 09-08-2013 01:29 AM

I tapped my loc into the left rear door. I had a PAC loc and my bass signal sucked!!! Switched to the LC2i and now my subs hits HARD!! Now I just have to figure out what to do with these factory speakers.

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