Re: hooking EVS up to computer (speakers)
Ok, here is what you need to do.
Your car amp is designed to run on 12 volts DC. Not 110~120AC from your wall. You can get a transformer unit that will convert your wall power down to 12VDC. You then run the + and - accordingly. The amp will also have a signal or ignition wire. This is so the amp will only turn on if the car or car stereo is on. This is to prevent the amp from drawing on your battery when the car is off. Refer to the amps manual to what it allows. With out that sending a signal the amp will not turn on.
If you got the above good, hook up the speakers. Get a stereo 3.5mm jack to two RCA plug Y cable. I'll provide a link for that and the power transformer, just ask.
Am I correct. You purchased a bass cabinet to use as speakers/ subs?