good luck on the amp situation.
when i installed my first subwoofer, i blew an amp before the initial turn on. i was overly exicited and wasn't paying attention to what i was doing. i left the power line hooked into the battery and was screwing it into the terminal on the amp (removed it to do something...big mistake....). i accidentily touched the screwdriver from the terminal to the amp chassis and got a big ZAP. amp was toast.
luckily i was single at the time and had money to burn. i ran to a Sony outlet an hour away and bought a new sub amp. had it hooked up before leaving the parking lot.
sold the blown amp to a kid i worked with who was still in high school. he was in the Vo-Tec electronics program. i made the $20 back that i paid for it from a friend, and he got it working again after replacing a few minor parts.