I have 2 BB835 Speaker Craft amps. I just added a 2nd Elan 630 to the system and found out that one of the amps seems to have a problem with the 12V trigger. The 630 comes on and it switches the amp on. The problem comes in when I turn off the system. The amp stays on. If I remove the 1/8" Mono plug from the 630 the amp turns off. When I plug it back in the amp turns on.

I tried the same 630 with the other amp and all works fine.

I also tried connecting the 630 to the Amp (good One) then the amps trigger to the 2nd amp (bad one). Still the same prob.

Any thoughts
MLD