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post #1 of 10 Old 04-25-2012, 12:50 PM Thread Starter
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Soon to be JK owner looking for audio advice

Hey Guys - this is my first post on the site and I'm new to Jeeps in general, so take it easy on me. I searched the forum and didn't find any answers, so I thought I'd throw this out there...

I'm hoping to/planning on acquiring a 2012 Unlimited Rubicon in the next month or two and trying to do all my homework ahead of time of what I need/want to do it, so I'll be prepared. I'm hoping you guys can shed some light on the factory audio system.

As I mentioned, I'm going for the Rubicon, so I'll get the Infinity Speakers and Sub automatically (I'm assuming when they say it's a 7 speaker system, it refers to 2 in the dash, 2 in the soundbar, 2 dash tweeters, and 1 sub. Is this right??)

I'm also planning on upgrading the factory system because I'd like to get Nav, but don't want to go aftermarket for security's sake, but I'm undecided on which to go for - the 430N or 730N. From what I can tell, aside from the privilege of getting to spend an extra $800, the only things the 730 gives you is 8GB LESS(?!) storage on the MyGig, the XM traffic service, and maybe Bluetooth. Is this a correct assumption? Does the 430 not do bluetooth on it's own without an upgrade?

Once I get that figured out, I plan on replacing the stock sub with a JL Stealthbox and an aftermarket Amp (most likely JL or MTX Thunder Marine). My question(s) are: Do I need a Factory Sound Processor (Such as the JL Cleansweep) to maximize my audio performance?

Lastly, should I consider replacing the factory speakers? They're Infinitys so I assume they're good speakers if properly powered, right?? If so, I was envisioning keeping them, but getting a five-channel amp - 1 channel for each of the standard speakers and one for the JL sub. Does this sound like a good plan? Also, any idea what the speaker power ratings are on the stock Infinitys?

I'm not an audiophile or trying to create a studio-quality environment here, I'd just like a good sounding system that I can hear well with the top off, etc. I'm also VERY far from being a car audio specialist, so if any of my plans/assumptions are incorrect, please let me know.

Sorry for the long-rambling first post, but if you guys can help me chip away at any of these questions, I'd GREATLY appreciate it. I'll try not to make all my other posts dissertation-length.
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post #2 of 10 Old 04-25-2012, 03:11 PM
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Howdy and welcome to the forum!

I can't comment on the head unit. I kept my factory head unit and replaced everything else.

If the Infinity speakers the 2012 comes with are the same as the ones in the 2009, you will be replacing them. To me they were very anemic.

I used the mid range Alpine SPR series speakers. I replaced the component speakers in the dash and the coaxial speakers in the soundbar.

I replaced the factory infinity amp with a JL-HD900 to power all the speakers.

I replaced the factory sub with a JL-Stealthbox.

Being that this is a Jeep(lots of road noise in comparison to a car) I don't know if it is worth using an aftermarket sound processor like the JL Cleansweep.

With what I have done, it is louder than I need with the top off.

Good luck with your choices, sound systems are very subjective.

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post #3 of 10 Old 04-25-2012, 03:48 PM Thread Starter
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Thanks for the welcome and the info!!

A couple questions about your set up:

When you say you "replaced" the factory amp with the JL- Did the JL actually fit in the same spot as the factory amp under the steering wheel??

Did the Alpine SPR's fit under the factory grills without any modifications?

(Being as I plan on removing the doors & top, I'm very concerned about keeping the system looking as stock as possible.)

Does the JL-HD900 have enough juice to power all four component speakers and the sub or do you have a separate amp powering the sub?

Thanks again!
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post #4 of 10 Old 04-25-2012, 05:32 PM
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Quote:
Originally Posted by TxWarEagle View Post
Thanks for the welcome and the info!!

A couple questions about your set up:

When you say you "replaced" the factory amp with the JL- Did the JL actually fit in the same spot as the factory amp under the steering wheel??
With a little manipulation the HD900 could fit int the factory location. However in doing so I it would require modification of the AC/Heater duct that dumps into the footwell. I did not feel like modding this duct. To me it would put too much heat on the amp in the winter.

I ended up mounting my amp under the drivers seat. In retrospect I should have put it under the passenger seat. I am wanting to install one of the tuffy lockboxes under the drivers seat now. I may end up moving my amp.

I believe Mr. RonGilbert mounted his amp behind the glove box. Do a search for his name and check all his posts. That may take a while since he has a high post count

I hear that the Alpine PDX-5 fits in the factory spot with no modifications needed. I though about this, but I wanted more power for the sub output.

Quote:
Originally Posted by TxWarEagle View Post
Did the Alpine SPR's fit under the factory grills without any modifications? (Being as I plan on removing the doors & top, I'm very concerned about keeping the system looking as stock as possible.)
Yes, I used the SPR-17C and SPR-17S speakers. They fit without any modifications in the factory locations. I even re-used the factory grills in the rear soundbar. My install looks factory with the exception of the Stealthbox in the rear.

Quote:
Originally Posted by TxWarEagle View Post
Does the JL-HD900 have enough juice to power all four component speakers and the sub or do you have a separate amp powering the sub?

Thanks again!
Yes, I feel the HD-900 has just the right amount of power for the system I built. For me, that means it is loud enough to hurt my deaf ears and induce a night of restless ear ringing sleep.

09 BLACK Sahara 4 Door - Auto, G2 4.88s
TF 2.5" Coil Lift w/shocks, TF Frnt Adj Trac, TF FLCA, JKS Discos, JKS Rear Adj Trac, LOD Full Rear GEN2,
A.C.E. Rock Rails, Viper TB: Check the Garage for more.
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post #5 of 10 Old 04-25-2012, 05:46 PM
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I have used the PDX-5 to power an entire system (6.5" components, 6.5" two-ways, 10" sub), sub included, so if it fits that is the amp I would use. Like mentioned above, I too, read that it fits in the factory location.

The dash speakers aren't bad the rest of the speakers suck but I read that this is due to the way the amp's channel frequencies are x-overed.

Head unit wise, I don't have factory nav, nor would I personally opt for it. I would prefer to spend the money on a head unit that has multiple A/V inputs and at least one A/V out. This will truly depend on what you intend to do, or where you intend to travel, with your Jeep. For instance, front & rear IR cameras, external DVD monitor for passenger, DVR, rock cameras, etc.


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Last edited by DisaMent; 04-25-2012 at 05:49 PM.
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post #6 of 10 Old 04-26-2012, 04:19 PM Thread Starter
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Thanks again for all the help/advice guys - I really appreciate it!


Quote:
Originally Posted by MoridinTX View Post
Being that this is a Jeep(lots of road noise in comparison to a car) I don't know if it is worth using an aftermarket sound processor like the JL Cleansweep.
I see your point on not needing the processor for cleaner sound due to road/wind noise, but I was under the impression I would need one to decode the signals coming from the factory system so that the aftermarket speakers/amp would work correctly. But based on your set up it sounds like this may be an incorrect assumption??


Quote:
Originally Posted by MoridinTX View Post
Yes, I used the SPR-17C and SPR-17S speakers. They fit without any modifications in the factory locations. I even re-used the factory grills in the rear soundbar. My install looks factory with the exception of the Stealthbox in the rear.
Do you remember which of the Alpines went where between the 17C & 17S? It appears those have since been discontinued, and because of that I can get a good deal on, but the limited info I'm looking at shows them both to be 6.5". However I thought the soundbar took 5.25"?
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post #7 of 10 Old 04-26-2012, 04:29 PM
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Now I understand your wanting the processor.

I kept my stock head unit and installed a PAC-AUDIO C2A-CHY2 adapter. It plugs in between the factory wiring harness and the radio. It is an CAN-BUS to RCA adapter providing two sets of RCA outputs for the Amp.

The SPR-17C (new model SPR-60C) are the component speakers. The 6.5" driver replaces the drivers in the dash, and the tweeters will fit in the factory tweeter housings for a stock look.

The SPR-17S (new model SPR-60) are 6.5" coaxials that replace the factory coaxials in the soundbar. They were a direct replacement for me, but I have a 2009 Jeep, I don't know what size are in the 2012.

I bought my speakers from sonicelectronix.com

Disclaimer, while I like the Alpine speakers, you may not. Speakers are very subjective to the listener, whether they are warm or harsh sounding.

09 BLACK Sahara 4 Door - Auto, G2 4.88s
TF 2.5" Coil Lift w/shocks, TF Frnt Adj Trac, TF FLCA, JKS Discos, JKS Rear Adj Trac, LOD Full Rear GEN2,
A.C.E. Rock Rails, Viper TB: Check the Garage for more.

Last edited by MoridinTX; 04-26-2012 at 04:43 PM.
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post #8 of 10 Old 04-26-2012, 04:46 PM Thread Starter
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A-ha! Gotcha. That makes sense on the adapter. I've used similar PAC adapters on aftermarket head unit installs in my current truck, but I kept the factory speakers, so it didn't occur to me I might use one for an opposite type of setup.

Thanks for the info on the speakers, that explains the different model #s now. I'll double heck fitment in the 12 before I spend any money.

Disclaimer noted! Thanks for that too. I'll be sure I listen to some before committing.
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post #9 of 10 Old 04-26-2012, 05:42 PM
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Alpine has there new 5 channel amp (PDXV-9) that is 4x110 and 1x520 with a very small footprint. I just put it in and its running a JL Stealth with no issues. it has a much better price point than the JL. I put it under the drivers seat but it will fit in the factory location. Footprint is
(WxHxD) in: 10-1/8'' x 2'' x 7-35/64''
I went with the Focal's up front and they are great.

Last edited by Kyle6908; 04-26-2012 at 06:00 PM.
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post #10 of 10 Old 04-27-2012, 02:55 PM Thread Starter
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Very cool-Thanks Kyle. That's nice that it's a little cheaper and will fit in the factory location. That might be exactly what I'm looking for!
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