Got a show to play and ran ran into this:
Originally Posted by tech21nyc
I would have to run that info by our engineer. We in general don't recommend daisy chain digital switching power supplies with our products. They will work but we have received way too many complaints from end users and have experienced issues first hand. It would be cheaper for us to use those supplies but they aren't the best idea in audio circuits. I have one at home and sometimes just plugging the supply into the same power strip will cause my tube amps to get noisey and that is not even using the supply with an effect.
Thanks for the information.
I'm having hell issues with my tube amp. Supposedly the venue has all isolated grounds for each power outlet. My pedal supply is a grounded non digital oldfangled wart, runs completely silent as a rule.
Now, my BDDI deluxe is on phantom power, the DI is pristine at FOH with tuner in FX loop for silent pop free tuning and my eq pedal in front of the BDDI input. So no noise on the FX side. Tells me nought wrong with the power supply.
But amp is a different story, got a hell mains hum from it and noisy as hell from the cab mic.
The MD's telemonitor got into my bass somehow with mains hum, if someone waved a hand in front of the sceen it got much louder, explain that someone?
We solved that one by moving the monitor away from me. Ground lift on my amp got rid of most of the other 50hz after that. I'm wondering if some TV hum is still gettting into my amp, but not the rest.
The other junk coming out of my amp is making the mic useless.
What happens if I turn off phantom/ground button? FOH phantom power is on regardless.
chain once more:
bass > EQ > BDDI dlx (tuner)
BDDI DI > FOH
BDDI output ( no channels in use ) > amp
I'm going to see if I can get a seperate supply for my pedals and the TV. Any other suggestions?