Originally Posted by rmedeir12
Was on the phone with ML and they indicated that a constant signal is being received by the amp from the SSP-800 in standby mode thus the fault and not powering on.
I wonder what kind of signal they think comes out of the SSP in stand-by.
I guess if it is in the audible range you ought to be able to hear it by turning the amp on while SSP sleeps. That's test #1.
Aside from the alleged signal, if that were present and disrupting the ML turn on, you should be able to see that by leaving the SSP in stand-by and switching the ML on/off. Does that work?
That's test #2.
If I disconnect the audio interconnects I can trigger the unit on and off with no issue. But when the audio interconnects are connected no good. Additionally, I have ruled out components connected to the SSP-800 to not be the issue. It appears to be the SSP-800.
Well, it could also be the amp. One thing to try is to disconnect the SSP, and short circuit the audio input cables feeding the amp (do that while the amp is OFF!). Does the amp turn on/off a few times normally? It should. Turn off, then reconnect normally.
That's test #3.
- Roger recommended the following..."I suspect there may be a small transient coming from the SSP when it powers on, that the amp senses. Ideally you would apply some delay to the trigger, but neither the SSP nor the amp offer a means to adjust the delay. You can prove this theory by removing the trigger connector from the rear of the SSP, turning it on, then inserting the connector a second or 2 later to see if the amp starts normally. If so, such a delay would do the trick. If not, there's something else afoot."
Did you try the simple test of just plugging in the trigger plug a couple of seconds after turning on the SSP?
That's test #4.
I think this would do the trick, but I am incompetent at integrating something like this.
I ordered the delay board
just to see how it works. If it does as advertised, I'd be happy to let you try it out. I will wire it with 3.5mm male in, female out cables so it just goes inline with the trigger.
So what I am wondering is anyone else with ML amps or other amps having the same problem?
I am currently powering up two Classe amps with the 12v trigger, one amp getting the trigger direct and the other one time delayed (just to ease stress on my 15A breaker). All works fine.
There's 4 very simple tests to help zero in on what's happening.