Motu 828mkII power supply buzz--- use DC filter?

intellijel · 24th May 2008, 08:13 PM

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!

smitsch · 30th September 2008, 11:16 PM

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...)

24th May 2008, 08:13 PM	#1
intellijel diyAudio Member Join Date: Feb 2006 Location: Vancouver	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!

30th September 2008, 11:16 PM	#2
smitsch 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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