Since last weekend my Rockford 500.2 has blowed twice. Any ideas what it could be.

 

Look for a chaffed thru wire somewhere causing a short. If it was a thermal problem the amp would just shutdown in protection mode but come back on when it cooled off. Did this problem start suddenly - like perhaps after riding down some rough roads?

 

My Xtant A2002 blew a fuse 1 hour after it was installed. The problem was that the amp was only 4 ohm stable in bridged mono and my Xtant A210 sub was a 2 ohm sub.

 

are the xtant amps any good? my good friend is about to buy a used 3300c xtant and i think it's a 2100 b. any opinions?