Brutus BRZ1700.1D Car Stereo Mono Subwoofer Amp - Fix products instructions anything

I hooked up my hifonics brutus BRZ1700 to two alpine type R dvc 2 ohms, turned the system on, played fine for 10 minutes with volume half way up. It fried my 80 amp fuse. i replaced the fuse, the amp lights up blue and gets the green power light on with no fault light but not getting any sound from subs. Something wrong with the amp? or maybe voice coils fried on the subs? any suggestions would be great. Thanks