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[Car Audio] Amp Suggestions, Alpine SWR-12D4 Type-R 12" Subwoofer

post #1 of 4
Thread Starter 
Thinking of picking up some Alpine SWR-12D4 Type-R 12" Subwoofer's and putting them in a custom enclosed box... just a simple carpeted design (vented) but I need suggestions on a decent amp to go with them, I dont really want to spend huge bucks, but id rather it sound clear and low then like crap. Any help is appreciated tongue.gif
post #2 of 4
Well the biggest question is how much you are willing to spend? Since they are D4 and assuming you are running two of them, you will need to find a 1ohm stable amp or a 2ohm amp that pushes at least 1000 watts RMS.

I'm a huge Sundown Audio fan, so I'm recommending the SAZ-1000.

Type Rs are great subs, I was running two off a JL 500.1 and they sounded great and produced tons of output.
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post #3 of 4
As a guesstimate, the quality of your sound is somewhere about like this:
10% driver quality
10% crossover quality
30% amp quality
50% cabinet/enclosure design

so if you have a super high end amp, super high end driver, and super high end crossover, but your enclosure is poorly designed you're worse off than if you have low end amp/crossover/driver and a well-made enclosure. Most car amps include a crossover in them, so you usually don't have much choice there.


A carpeted box with two speaker cut-outs and vent hole won't cut it unless you designed the shape and volume of the box correctly and made the vent hole the correct area with a tube of the correct size. Most people have to use insulation to give the enclosure extra volume, shape it to avoid standing waves, and make sure the port is properly tuned.
post #4 of 4
It's a sub enclosure, no need to be concerned about standing waves as sub frequencies are generally the size of a living room. Stuffing such as fiberglass or preferably polyfill, or denim insulation will help with unwanted harmonics box.
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