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MTPAV AC HUM ISSUE HELP!
Posted: Sun Apr 23, 2006 8:22 am
by Timeline
I have a major ground hum when I powerup the MTPAV now. Just happens in all my unbalanced audio sources and M-Audio speakers.
It appears to NOT be a ground loop and rather something in the PSU that is emenating all over my system via ac.
The MTPAV seems to still work, strangly enough.
Anyone else heard of this?
Posted: Sun Apr 23, 2006 6:47 pm
by Sticky Fox
It could be a ground loop if you're using USB. I'm not sure how you'd address it. Perhaps you can lift the ground on the MTPAV?
If it's a 60Hz noise you're hearing, it's not getting into your monitors through the AC.
Posted: Sun Apr 23, 2006 8:31 pm
by Timeline
Sticky Fox wrote:It could be a ground loop if you're using USB. I'm not sure how you'd address it. Perhaps you can lift the ground on the MTPAV?
If it's a 60Hz noise you're hearing, it's not getting into your monitors through the AC.
Yea thanks. tried the lift and no dice. It's usb. I'll mess with it at the end of the week.
Cheers
Posted: Tue Apr 25, 2006 2:55 am
by Sticky Fox
Timeline wrote:
Yea thanks. tried the lift and no dice. It's usb. I'll mess with it at the end of the week.
Drat.. That's a really weird place for a hum to be coming from. Are you using MIDI only, or do you have the timecode/word sync or anything else connected?
Posted: Tue Apr 25, 2006 3:52 am
by Timeline
It seems to eminate out the ac line as noise. using Mackie control, a few synths too but no big setups like TC lockup or anything