1000w subwoofer with a 5600w amplifier?

I have a 1998 Honda civic hatchback, i'm going to install a sub in it and have a few questions. The sub i have is 1000w sony xplod. The amplfier that I'm thinking of getting is a 5600w Powervox 4 channel. I want to know if the music would sound good or not, or instead should i get a 2800w Powervox 4 channel? Also do Subs/Amps drain your battery quicker? Should i get another subwoofer so i can have 2 in the car or would one be good enough? Also is there any other places i can put a sub in a car other than the trunk? What spot would produce a bigger *doof doof* in the car.

I was at a car show in Miami and a 2003 honda civic had this same exact amplifier under the passenger seat it won for best car stereo its a Hifonics MT Olympus Hercules 4K 4,000w Mono Amplifier Competition Car Audio Amp
Hifonics MT Olympus Hercules 4k Mono Car Amplifire
4000 Watts Peak Power Total / 2000 Watts Total RMS
4 Ohm: 900 Watts RMS / 1800 Watts Peak x 1 Channel
2 Ohm: 1600 Watts RMS / 3200 Watts Peak x 1 Channel
1 Ohm: 2000 Watts RMS / 4000 Watts Peak x 1 Channel
http://amzn.to/...to/1wgUeaC

There's a reason that amp is so cheap.
That 5600w rating is a bad joke. The pair of 20a fuses say it's around 400w rms.
Besides, you don't want a 4 ch with a single sub. A 2 channel would probably work best. With a pair of subs you'll probably be looking for a mono.

I think Sony's "1000w " peak/max subs are 300w rms.

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