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Alpine to JL Audio- Subwoofer

46K views 41 replies 26 participants last post by  dogocity 
#1 ·
This is the second stage in the conversion of the stock Alpine speakers in my 2011 Ram CC Sport to JL Audio.

The subwoofer used to replace the stock Alpine 8" subwoofer is the JL Audio SB-D-QDRAM/10w3v3. For more details, go here:

http://mobile.jlaudio.com/products_stealthbox_detail.php?fit_id=1440

The amplifier used is the JL Audio XD 600/1. For more details, go here:

http://mobile.jlaudio.com/products_amps_pages.php?page_id=301

Also, the JL Audio harness XD-CLRAIC2-SW was used to connect to the stock sub harness providing an RCA signal to the amplifier. This harness is detailed here:

http://mobile.jlaudio.com/products_connections_detail.php?cat_id=5

As for amplifier wiring, the JL Audio XD-PCS4-1B was utilized. It can be researched here:

http://mobile.jlaudio.com/products_connections_detail.php?cat_id=9

Last but not least, a level controller, JL Audio HD-RLC was utilized. It can be found here:

http://mobile.jlaudio.com/products_amps_pages.php?page_id=308

Now that all of that is out of the way, let's get to the good stuff!

I did not follow the JL Audio instructions which asks you to drill through the floor and bolt the sub box down. Instead, I fashioned a black bracket similar to the stock sub enclosure and bolted the JL box down in the exact same location.

The wiring was uneventful as the plastic block off plate beside the brake master cylinder made for an extremely easy location to run the line. I hate to see audio wiring in the engine bay, or anywhere for that matter, so everything was loomed identical to stock and hidden.

The amplifier was mounted on the non-sub side of the cargo area. All wiring was run under the carpet and amp and then connected. The HD-RLC was mounted under the steering wheel and to the left. Easy to get to and adjust and not highly visible.

Amplifier Settings: 24db Crossover/50hz/No input sensitivity adjustment.

Results: Wow! Absolutely breathtaking bass response and finally, the entire system rocks! This sub setup can play everything from Rap to Orchestra and sound like it's perfectly suited to all formats. I couldn't be happier!
 

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#5 ·
This is the second stage in the conversion of the stock Alpine speakers in my 2011 Ram CC Sport to JL Audio.


Also, the JL Audio harness XD-CLRAIC2-SW was used to connect to the stock sub harness providing an RCA signal to the amplifier. This harness is detailed here:

http://mobile.jlaudio.com/products_connections_detail.php?cat_id=5
How did you connect this to the stock sub harness? Did you use a 4-way harness/connector? If so, where did you buy it from?

I would like to copy your sub-replacement setup and like you I do not like cutting the stock connectors/harness.

Thanks in advance.
 
#13 ·
im looking to go this route (alpine to jl sub) all i want to do it upgrade the sub for more bass but in this case it looks like im going to have to cut the wire harness at the sub and splice in the rca conectors for the amp what is the wire polarities on a 2012 ram quad..i took the stock sub out to look there is four wires green and grey whith black stripe / green and grey with white stripe any info would be helpful thanks
 
#15 ·
I wouldnt mind some info myself..Just a lil more bang from the sub would be nice cause i listen to alot of glam rock/hair bands on sirius and its not to to bad there but on the electronic shit its fine..I have 2 infinity 6x9(few yrs old but new) that i have never used and might install them in the back door,hell i have no idea how they sound either..No clue where stock sub is either on my sport..I have the storage bins under passenger seats so no clue as to its location..
 
#16 ·
I'm looking for a lil more clarity on your install.
Does your amp merely drive your sub only & door speakers are run as they come from factory?
Also, you made no mention of using a line out converter. Was this not required?
 
#22 ·
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.
 
#23 · (Edited)
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.
 
#24 ·
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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