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Motu 828mkII power supply buzz--- use DC filter?
Motu 828mkII power supply buzz--- use DC filter?
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Old 24th May 2008, 09:13 PM   #1
intellijel is offline intellijel  Canada
diyAudio Member
Join Date: Feb 2006
Location: Vancouver
Default Motu 828mkII power supply buzz--- use DC filter?

I have a Motu 828mkII audio interface and the mechanical buzz from the transformers is driving me nuts!

I have tried tightening/loosening the mounting screws of the trannies but makes no difference. I guess the main mechanical coupling to the pcbs is via the solder points. There doesn't seem to be anywhere convenient or effective to mechanically isolate using rubber grommets.

Is there a cheap and simple external solution? e.g. build a DC removal filter to filter the AC from the mains? isolation transformer?

any tips appreciated!
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Old 1st October 2008, 12:16 AM   #2
smitsch is offline smitsch  Switzerland
diyAudio Member
Join Date: Sep 2008
ask for a replacement - or try to get some pressure on it (feltpads, cablewrap) or put the transformer in a Box, and fill it with epoxyd glue like Araldite. (not the pins...)
SnPb, thd, pcb, daw, pa, foh, diy, maybe, why?
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