Just got some used original Triton 2 ( not triton 2 +) from my cousin, Sounds great when set to small and used dual monolith subwoofers. When i try to use their built in subwoofers insert power cables nothing comes on and no subwoofer sound (tried to set the speakers to large and also tried small + lfe). on one towers green light comes on just once and gone when i plugged in the first time. just ordered some fuses will change them and see if that fixes the issue. What do you guys think? are the amps gone on the subs? i wanted to replace on my own where can i buy them?

Also can i just use them small and use external subs and never bothered to replace the amps? do i miss anything by doing so?

Golden Ear technical support is very good, and their warranty is rather generous. Why not try contacting GE?