For those of you who have purchased these SAE-1200D Clearance items... and for those who otherwise own a SAE-1200D:
I have seen in quite a few of these SAE-1200D's problems with the input board that could only be related to letting the Battery+ wire touch the RCA Shield somewhere between the radio and the amp. You guys really need to be more careful installing these things, and other components in your setup (like other amps and crossovers etc) because if ANYWHERE in the RCA's, doesn't matter what piece of equipment it goes to, if you let the B+ wire touch the RCA Sheild anywhere in any of the RCA lines it's gonna screw up the input boards in your amps and crossovers. And do not ground your RCA Sheild to the cars GND. Should not be that way. It is supposed to be a 0 volt reference for the pre-amp circuits, not a ground. Inside the head unit it is supposed to be isolated from the cars GND and should remain that way throughout the install. If you have had to ground your RCA's to the cars GND to stop a problem, then somewhere in your setup a peice of your equipment is screwed up or you have some bad RCA cables in the setup somewhere.
I have seen in quite a few of these SAE-1200D's problems with the input board that could only be related to letting the Battery+ wire touch the RCA Shield somewhere between the radio and the amp. You guys really need to be more careful installing these things, and other components in your setup (like other amps and crossovers etc) because if ANYWHERE in the RCA's, doesn't matter what piece of equipment it goes to, if you let the B+ wire touch the RCA Sheild anywhere in any of the RCA lines it's gonna screw up the input boards in your amps and crossovers. And do not ground your RCA Sheild to the cars GND. Should not be that way. It is supposed to be a 0 volt reference for the pre-amp circuits, not a ground. Inside the head unit it is supposed to be isolated from the cars GND and should remain that way throughout the install. If you have had to ground your RCA's to the cars GND to stop a problem, then somewhere in your setup a peice of your equipment is screwed up or you have some bad RCA cables in the setup somewhere.