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Old 01-13-2012, 02:11 AM   #1  
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Advice on running an 8 speaker system w/sub...

Hey guys, I'm new to the car audio thing & have a question;

I'm wanting to run a 9 speaker system in my van (8 speaks & a sub) & was wondering, is it possible to run 4 of the speaker & the sub on a 5 channel amp & then run the remaining 4speakers from the HU's 4 channels? Or does installing an amp eliminate the HU's 4 channels?

My van came stock with a lousy HU & 6 speaker set up (karaoke machine too. For real!). I've recently replaced the HU & all 6 speakers, but bought another set of speaks to help fill out the sound, because it's such a huge space to fill. Nothing fancy, just a run of the mill Kenwood deck with JBL GTO's all around. I'm also planning on adding a sub.

I'd like to avoid running multiple amps if possible & I'm not looking to win any comps, I just want something that sounds decent. I'm pretty happy with how it sounds now, but I know I'll be happier with the extra set & a sub!

Is there a better/easier way to do this, or is there something else you'd recommend doing?

In case you need more info, here's the HU & speakers that are in there now;

HU is a Kenwood KDC-MP345U

Rear Speakers-2x JBL GTO928 6x9's (100w rms)
Mid Speakers-2x JBL GTO528 5.25's (45w rms)
Front Door Speakers-2x JBL GTO528 5.25's (45w rms)
Front Dash Speakers-2x JBL GTO329 3.5's (25w rms)

For a sub, I've got a line on an Alpine SWR-1040D for a smoking deal, & for amps I was looking at a used Alpine MRV-F450 (50w rms x4, 200w rms x1) or the PDX-5 (75w rms x4, 300w rms x1)

Thanks in advance guys, any help you could give would be really appreciated!
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Old 01-13-2012, 02:42 PM   #2  
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Yes you can use an amp and the built in power at the same time
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