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Old 12-04-2012, 10:25 PM   #1
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JKU Upgrade amp/speakers with stock head unit

Hey guys First off i would like to say im new to the Jeep community (just purchased a 2013 Wrangler unlimited) and this is my first post. I have found many posts on similar topics but i still cant seem to find an answer.



Ok guys I have a 2013 JKU with the factory 430n head unit. I do not want to change my head unit,,,,I know i know im doing it the hard way. I want to upgrade my sound system to be the best it can, that means clean sounding lots of bass (not shake my windows bass but full bass) I have already purchased all of my speakers Polk audio MM6501's for the front MM651's for the sound bar and MM840 for the sub, I plan on dynomating the inside of all of the boxes and filling them with pollyfill. All of that is no problem for me but this is where i need some help.

How can I upgrade my factory amp so that I can properly power all of my high end speakers....as streamlined as possible of course.

also if you know a thread where this question is answered let me know Thanks guys!

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Old 12-22-2012, 11:09 PM   #2
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Hey, I am installing exact same speakers on my JK. I already installed front MM6501 and soon install other two.

I have no plan to upgrade amplifier yet. But after this is done depends on the result, I may end up upgrading amplifiers too.

What I know is you need some signal processing (like using cleansweep etc..) so you can feed proper signal to aftermarket amp from stock amp or headunit.

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Old 12-31-2012, 09:57 AM   #3
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Great, Question did you use the cross over for the front speakers or just directly wire the driver and the tweeter separate?

I just wasnt sure how to i should wire up the front speakers, I put the 651's in the sound bar and they sound nice but those are straight forward,

Now after hearing the sound bar and watching the speaker move i am definitely going to upgrade the factory amp and get the most out of them
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Old 01-08-2013, 06:51 PM   #4
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Great, Question did you use the cross over for the front speakers or just directly wire the driver and the tweeter separate?

I just wasnt sure how to i should wire up the front speakers, I put the 651's in the sound bar and they sound nice but those are straight forward,

Now after hearing the sound bar and watching the speaker move i am definitely going to upgrade the factory amp and get the most out of them
Yes, I used crossover. Check your PM.
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Old 01-08-2013, 09:06 PM   #5
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For me i have always gone with a set of components, i have been amazed with the sound you get with a set of infinity kappa perfect components. I run an amp for the speakers and a separate amp for my sub.


If you want the best possible sound system than plan on spending a ton of money
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Old 01-08-2013, 09:17 PM   #6
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What are you planning on spending
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Old 01-13-2013, 09:39 AM   #7
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Originally Posted by Hippsdesign View Post
Hey guys First off i would like to say im new to the Jeep community (just purchased a 2013 Wrangler unlimited) and this is my first post. I have found many posts on similar topics but i still cant seem to find an answer.



Ok guys I have a 2013 JKU with the factory 430n head unit. I do not want to change my head unit,,,,I know i know im doing it the hard way. I want to upgrade my sound system to be the best it can, that means clean sounding lots of bass (not shake my windows bass but full bass) I have already purchased all of my speakers Polk audio MM6501's for the front MM651's for the sound bar and MM840 for the sub, I plan on dynomating the inside of all of the boxes and filling them with pollyfill. All of that is no problem for me but this is where i need some help.

How can I upgrade my factory amp so that I can properly power all of my high end speakers....as streamlined as possible of course.

also if you know a thread where this question is answered let me know Thanks guys!
So did the MM840 fit in the stock enclosure without any mod? Were you able to re-use the Alpine grill? I ordered the MM840D yesterday. The stock alpine sub appears to be a dual voice coil model. I also ordered a JBL GTO-501EZ amp to power it. Now I just need to figure out where to tap into the signal wires if I want to mount the amp under the passenger seat.
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Old 01-14-2013, 05:57 PM   #8
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So did the MM840 fit in the stock enclosure without any mod? Were you able to re-use the Alpine grill? I ordered the MM840D yesterday. The stock alpine sub appears to be a dual voice coil model. I also ordered a JBL GTO-501EZ amp to power it. Now I just need to figure out where to tap into the signal wires if I want to mount the amp under the passenger seat.
Seems like MM840 fits without any spacer if you are not going to use optional grill. I had to use 2 1/2inch thick spacers just to install that grill. I don't think you can reuse stock grill. But maybe I am wrong.
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Old 01-14-2013, 07:55 PM   #9
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Originally Posted by Hippsdesign View Post
Hey guys First off i would like to say im new to the Jeep community (just purchased a 2013 Wrangler unlimited) and this is my first post. I have found many posts on similar topics but i still cant seem to find an answer.



Ok guys I have a 2013 JKU with the factory 430n head unit. I do not want to change my head unit,,,,I know i know im doing it the hard way. I want to upgrade my sound system to be the best it can, that means clean sounding lots of bass (not shake my windows bass but full bass) I have already purchased all of my speakers Polk audio MM6501's for the front MM651's for the sound bar and MM840 for the sub, I plan on dynomating the inside of all of the boxes and filling them with pollyfill. All of that is no problem for me but this is where i need some help.

How can I upgrade my factory amp so that I can properly power all of my high end speakers....as streamlined as possible of course.

also if you know a thread where this question is answered let me know Thanks guys!
The best way, hands down, to drastically improve your stock headunit's sound quality is with a JBL MS8 sound processor. This will take all of your factory amp's signals and sum them to get a full range signal that's usable to feed external amps, or you can use the MS8's built in amp. If you're strapped for cash, get the MS8 first, and use it's amps to drive your new speaker system. Then, when you get enough to add in an amp, pick a good 5-channel to drive all of your speakers and the sub.

You can always use line output converters to convert the factory amp's outputs into a low-level signal to feed an aftermarket amp; this will be much cheaper. The problem is that the factory "premium" amp's outputs are bandwidth limited to only allow certain frequencies on certain channels - without a ton of planning and tweaking, you will end up with gaps in the frequency range and overall poor sound quality when compared to the MS8.
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Old 02-08-2013, 11:31 PM   #10
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Sounds like you are far more advanced on the audio side of things, so what your saying is get the sound processor first then use the Feed from that for an external amp that replaces the factory one....? I always feel so lost over this stuff. And the speakers sound much better than stock but they definitely need more power because they are barely working. On the sub i also have the POLK grill and used a large spacer so i could use it. I used dynomat inside the enclosures with polly fill, In the long run the speaker adapter gives just a little bit more square footage (well in theory lol)
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Old 12-31-2013, 08:44 AM   #11
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The best way, hands down, to drastically improve your stock headunit's sound quality is with a JBL MS8 sound processor. This will take all of your factory amp's signals and sum them to get a full range signal that's usable to feed external amps, or you can use the MS8's built in amp. If you're strapped for cash, get the MS8 first, and use it's amps to drive your new speaker system. Then, when you get enough to add in an amp, pick a good 5-channel to drive all of your speakers and the sub.

You can always use line output converters to convert the factory amp's outputs into a low-level signal to feed an aftermarket amp; this will be much cheaper. The problem is that the factory "premium" amp's outputs are bandwidth limited to only allow certain frequencies on certain channels - without a ton of planning and tweaking, you will end up with gaps in the frequency range and overall poor sound quality when compared to the MS8.
I have the basic stereo unconnected 130. Does it have an amp? I don't want to change the head unit either. You seem to know a lot about this. Do you recommend the jbl ms8 or the output converter. Price is not an issue. I want the clearest sound possible without changing the head unit.
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Old 01-02-2014, 01:10 AM   #12
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Originally Posted by Id4bret View Post

I have the basic stereo unconnected 130. Does it have an amp? I don't want to change the head unit either. You seem to know a lot about this. Do you recommend the jbl ms8 or the output converter. Price is not an issue. I want the clearest sound possible without changing the head unit.
I have the ms8 as part of my build. It is an 8 channel amp in addition to a processor. It is a huge improvement to the stock system. I set it up initially with the ms8 and only replacing the sound bar speakers. Ive since done all the speakers the hu and added amps butnthe best bang for the buck was definitely the ms8. If you get one beware of the hands free phone echo there is a workaround that you can install but stock it makes handsfree phone calls unlistenable for the other person,

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