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Old 12-12-2013, 12:31 PM   #1
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JK System upgrade

Hey, I have a brand new 2014 Jeep Sport S w/ Alpine audio. I like it, quality is fine and is plenty loud but a little lacking in bass WITH THE TOP UP... top down is another question. Almost no bass and now as loud as Id like it to be. Granted I spend most of my time close to or at max volume and like my music to be near deafening with tons of bass. Still I'm looking to get a system that I can swap out with my current system with as little issue as possible.

For those who don't know the alpine audio package comes with: a 5-channel amp, four speakers, a built in 8in sub (very shallow mounting depth) and the two tombstone tweeters. The whole system puts out 308w (I'm pretty sure).

I want to replace the whole system (minus the tweeters) with something with more power. I was thinking around 500w RMS for the sub and around 80w RMS for each speaker.

Also unrelated if someone could understand explain how Ohms work. I get that more ohms means more resistance which requires higher power to achieve the same loudness. But why would anyone want a higher ohm speaker... does it have to do with sound quality?

Help/past experiance would be great! Thanks

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Old 12-12-2013, 06:36 PM   #2
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If you want detailed information, try these links. Or search google for "the meaning of ohms"
Wiring Subwoofers — What's all this about Ohms?

how does ohms work? [Archive] - Sweetwater Forums

If you want a simplified explanation, just get speakers that match the impedance of your amp. 2ohm speakers=2ohms amp. 4ohm speakers=4ohm amp.

Most of the best amps are 4ohm amps. Most of the best speakers are 4ohm speakers.

Don't mix 4ohm speakers and 2ohm speakers. Mixing ohms can burn up or overheat your amp. It will also sound horribly unbalanced because 2ohms speakers use half the power of 4ohm speakers.

If you want power, try throwing in a Alpine PDX-V9(100wattsx4@4ohms +500watts sub), and build your system around it. If you do, you'll have a great powerful audio system.

But, you will probably need to switch out those Infinity Speakers. Medium to Entry level Infinity Speakers are generally not High Capacity Speakers(40-55wattsRMS). I doubt your Jeep spec says anything about the power output of the amp or the handling capacity of the speakers. So, you'll want speakers that are rated around 100wattsRMS. CDT's are great, medium cost, high capacity speakers, when running a subwoofer(90-150wattsRMS). When not running a subwoofer, they may lack in bass output. If you have separate tweeter and midrange/bass speakers, then you'll want component speakers and not coaxial speakers. The CDT's come in convertible speakers, so they can be mounted as coaxials or components.

Easy Way Electronics CDT Web Shop Home Page

You can find a good subwoofer setup with downfiring subs here. This is what you want for "Top off" situations. 500watts of power from downfiring 2-10" subs, in a low profile box to save space. You can also request the seller for a different subwoofer manufacturer in the box, such as MTX or Kicker. But the Helix are rated for 500wattsRMS.

07 13 Jeep Wrangler 4 Door Custom Sub Woofer Box Loaded 2 Helix Audio B10 Subs | eBay

Anyone is welcomed to correct me if I am wrong. I am just trying to help, and I don't claim perfection.

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Old 12-14-2013, 03:54 PM   #3
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Thanks for the help. A lot of good stuff in there, but I'd perfer to get a sub that would fit in the place of my current alpine sub which is built into the trunk of the car. Only problem is it is an 8 in sub with a shallow mounting depth. Is there a sub out there that can handle 500W that 8 in and is also shallow, also would it even produce good quality bass due to the small enclosure.
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Old 12-14-2013, 05:12 PM   #4
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Quote:
Originally Posted by gbrynjo View Post
Thanks for the help. A lot of good stuff in there, but I'd perfer to get a sub that would fit in the place of my current alpine sub which is built into the trunk of the car. Only problem is it is an 8 in sub with a shallow mounting depth. Is there a sub out there that can handle 500W that 8 in and is also shallow, also would it even produce good quality bass due to the small enclosure.
Some people have upgraded the sub using a deeper subwoofer/larger magnet with an extension ring to compensate for the small depth. The smaller magnet in the shallow mount means less power. You will basically need two subwoofers for 500wattsRMS. Maybe mount one on the other side of the trunk.

You really can't expect great audio sound with the stock equipment. Almost everyone says that the stock audio equipment in our Jeeps, especially the speakers, are crap.
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