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CarAudioGAF I need help

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I just had an interesting adventure buying a new car (first had a Subaru BRZ for a week, then ended up changing my mind and getting a Camaro SS... I'll have to post the story about the journey in the OT car thread).

At any rate, part of that purchase was buying a nice beater pickup truck to drive around winters and back roads here in Wisconsin.

Well, the truck I ended up getting (a babied 1992 Chevrolet Extended Cab Pickup from Arizona) has an after market JVC stereo, but it has what I can only imagine are blown factory speakers. It sounds like tin can ass in there.

I am looking at putting together a little audio system, and I need your advice.

First of all, the factory speakers are 4x6 in the dash, and 4x6 in the rear. From everything I've read online, I will end up breaking all sorts of plastic trim if I try to get at the rear speakers, so my plan right now is to just get the best 4x6 speaker I can for the front dash, and just fade the sound forward.

Something like this plate http://www.crutchfield.com/S-LCagsk8s6o6/p_107DXI460P/Polk-Audio-DXi460p.html

Then, I am looking at doing 2 12" subs under the extended cab seat. The custom boxes that are made to fit the 88-98 ext cab's all average right around 6.5" max mounting depth and offer up .90cu ft. for each woofer.

It's an old pickup that's going to be a winter/beater so I am not looking to dbdrag this thing with 4000w RMS. I am looking for something that's gonna have some decent sound for a guy who's on a budget cuz he just pissed away his life savings on a Camaro SS.

The solution I've come up with is:

http://www.sonicelectronix.com/item_37709_Hifonics-HFX12D4.html

2 12" HiFonics HFX12D4 -- They're rated at 400w RMS each (Dual 4ohm Voice coils)

http://www.vminnovations.com/Produc...1800-Watt-MONO-Car-Audio-Power-Amplifier.html

AudioPipe AP-1800D Class-D rated at 750w RMS @ 4ohms (at least as true as CEA2006 rated gets you .. and from what people say .. pretty close)

I have heard Class-D amplifiers are more efficient than Class AB, and I have also heard that they are more efficient at 4ohm than 2ohm/1ohm, so I am planning on wiring 2 DVC 4ohm so that I end up with a 4ohm load on the amp. I don't know if stressing the alternator on an older pickup with 1000w @ 1ohm is the greatest idea.

Does anyone have better suggestions on super-budget speakers/12 inch subs/amp for under $500 (+install/wires) ?
 
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