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Old 02-15-2013, 10:20 AM   #1
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Where to mount amp

I've started the "upgrade" process for my '03 TJ. It came with the 7 speaker system, and so far, I've swapped the factory (blown) sub with a 6.5" Kicker. I also swapped out the stock dash and sound bar speakers with Infinitys that I had laying around. Head unit was swapped also. It sounds ok, but I'm thinking about adding an amp. I'm not sure which direction to go at this point. I can just add a 4-channel to push the mids/ highs, and leave sub alone....or I could do a 5 channel and push all of them. Also, where is a good place to mount the amp? I'm thinking under the back seat isn't good- it'll get too hot. I need the space behind the rear seat for gear. I'm thinking I need something relatively small, and mount it under the driver's seat.

Am I on the right track?

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Old 02-15-2013, 12:28 PM   #2
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I have the Alpine "PowerPack". It is a VERY small 4-channel amp that puts out 45w RMS/channel. They have one version for use with Alpine headunits, and one for all other brands.
Alpine KTP-445U "Power Pack" Upgrade any car radio to 45 watts RMS X 4 at Crutchfield.com
This is the perfect speaker amp for a Wrangler because it fits behind the dash, and it sends as much power to the speakers as they are likely rated for.

Alpine has a newer line of amps out, so their older "V-Power" series is heavily discounted. You can get their 4-channel for $150 or less and the mono amp for $150 or less at Best Buy. They are each very small amps, but are typical Alpine quality.


Take a look at Skinny Pedal for an amp mount that goes under the steering column.
TJ/LJ Amp Mount

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Old 02-15-2013, 01:08 PM   #3
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I mounted a full-fledged 5-channel amp under the driver's dash. I went with the Alpine MRX-V70 and used a piece of 1/2" MDF to mount it to the steering column supports. I still have full tilt on the steering wheel and my feet never hit the amp or wiring when driving/shifting.

Check out my audio build thread for some ideas, my second post shows some pics of the amp mounted.

Just getting something in there to power the whole system will make an enormous difference. The Kicker sub you have is being terribly under-powered by the factory amp so your bass will be a lot more punchy and less muddy. The Infinity speakers you have will also benefit from the added power and crossovers you can use to tune the sound.
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Old 02-16-2013, 01:23 PM   #4
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I like the idea of mounting the amp back behind the dash....I found this Fosgate amp, and I really like the size/ price/ output. Amazon.com: Rockford Fosgate PBR300X4 Punch BRT 300-Watt Ultra Compact 4-Channel Amplifier: Car Electronics
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Old 02-20-2013, 07:48 PM   #5
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Pulled the trigger today. Ordered the Fosgate amp, Nalin 5.25 brackets, Polk 521's for the front, and Polk 651's for the rear.
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Old 02-28-2013, 08:11 PM   #6
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Cool idea mounting amp under dash!! I'm going to have to try that

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