okay.... i got 4 Infinity 12" subs running from 2 amps. An infinity and a power acoustik. My infinity amp just shut down for no reason. no power led or protect led is on. My other amp works fine still. They share the same ground and remote wire. My power, ground and remote are all wired fine, but still no power to the Infninty amp. all connections are solid. all external fuses on the amp and power cord are fine. my RCA signal is good, too. are there internal fuses i could've blown or anything else i missed?????

 

i wouldnt mix amps like that... please tell me the subs are in different chambers.

did you check to make sure they are wired correctly

 

so it doesnt power up at all? check the remote (blue wire) in the back of the radio.

 

If you can't trace it on the outside, try looking for a cracked solder joint in the amp.