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First of all, your amp is rated at 250rms x 2 at 2ohms, so the subs can get way louder, the fuse keeps blowing because you are trying to push the amp to hard!! I had the same problem with my kenwood kac-9103D, I say get a new amp, either mono amp with at least 1300w rms x 1 or a 2 channel with at least 650w rms x 2, find one one crutchfield and then check millionbuy.com, there alot cheaper!!!! Also if you need help wiring check out crutchfield.com!!!

it sounds like you might have the subs wired up wrong that amp is 4 ohm mono or 2 ohm stereo stable depending on which crunch amp your friend has some are 1 ohm stable.what model subs do you have dual 2 or dual 4 and how do you have them wired to the amp?

What is the impedance of your speakers, 4, 8, 16, or 32-ohm? Also, how much power are you amplifying? If you're amp-ing too much power you will blow the circuits, as well. By the way, have you ever heard about hearing loss?

the first thing i would check is if the radio is the problem run a hot wire directly to your remote connection if that doesn't work make sure that you have good connections on your power and ground wires and that the wire is not to small for the amp (had a truck the amp would quit then start back but always had power it turned out to be a bad positive connection on the battery it would never completely loose power b/c the alt.)

well how do you have the subs wired to your amp? is it in mono mode and how many ohms does your amp handle?