Neither the amp or the sub have grounded power cords.
I have discovered the ML Dynamo takes about 30 minutes to switch to
standby in auto mode.
With speaker level inputs connected to the Onkyo
A807 amp, both units powered from the same wall outlet, Dynamo sub on
Auto, the sub hums for about half an hour after the Onkyo is switched
off, then the sub goes quiet. Not so good.
I connected a bonding wire between the two units on 3_7_09. If I smoked
some old audio gear I could just look at that as an opportunity, right?
Works fine. Now I have the ML powered from the wall and working
normally.
Are the sub and receiver in seperate locations in the room? Do they share the same power source, surge, outlet? If plugged in to different outlets, move the sub to the same power source as the receiver.
The ground leg of the outlet you are useing could be bad or circuits phased together.
The hum is a ground issue as the problem is resolved when it is connected to the receiver, thus being grounded.
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Do they share the same power source, surge, outlet?
Yes. Neither the amp or the sub have grounded power cords.
I have discovered the ML Dynamo takes about 30 minutes to switch to standby in auto mode.
With speaker level inputs connected to the Onkyo A807 amp, both units powered from the same wall outlet, Dynamo sub on Auto, the sub hums for about half an hour after the Onkyo is switched off, then the sub goes quiet. Not so good.
I connected a bonding wire between the two units on 3_7_09. If I smoked some old audio gear I could just look at that as an opportunity, right?
Works fine. Now I have the ML powered from the wall and working normally.
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