Blowing power fuses like crazy

With the fuse blowing so fast, it's only possibility is that there is a dead short in your power wire somewhere or within the amp itself (bad power supply).

See if you can check the wire for continuity with a meter, or have a local shop help you out. You could also take the amp out and see if a shop will bench test it for you. If the amp is good, the problem is your wiring. If the amp is bad, they will tell you.
 
Is it the right size fuse? If you know its a good ground and the fuse keeps going out then maybe the fuse is too small for your application...You could always just get a circuit breaker, then you can just reset it as opposed to replacing the fuse.
 
WhiteHeat306 said:
you also may have your gains up too high
doubtful.

but yes, you most likely have a short in your power wire. i ran into a problem like this on an install i was troubleshooting on a s10 blazer.

the person ran the power cable from the battery through the firewall like normal, but the wire was to close to the exhaust manifold and it melted the insulation away. so then when the person hit a speed bump, or floored it for the motor to move, the power wire would touch the exhaust manifold which is a ground. POP.