hum on left channel / monitor - Forum
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hawk, modified 13 Years ago.
hum on left channel / monitor
Youngling Posts: 1 Join Date: 3/20/10 Recent PostsI have a verry strange prob ...
My genelec 8030 A active monitors are connected to the xlr-balanced output of my motu 828MKIII.
Everything worked fine for months , but since last week there is a terrible hum on the left 8030.
The hum is there even with volume of motu turned down completely , and only on the left channel.
When i turn volume on the 8030 down , ther is no hum , but no sound also
i did the following :
- Disconnected everything , only mains connected ----> no hum
- Connected my iphone output to left 8030 ---> no hum
- Connected the humming 8030 to another balanced source (fireface 800 rme) ---> here is the hum again
- Changed left and right channel ,and now the other 8030 has the hum , but much quieter
- went to my neighbour to connect fireface800 with humming genelec ----> Still got hum (thought of ground loop) Everything is allways connected to same powersource.
So really what do i have to conclude now ?
8030 broken ??? but also my other 8030 hums (but much quieter) when connected to left channel
moto broken , but also the fireface then (because on both i get hum)
Another thing is , when i connect my level pilot from tc electronics the hum becomes even worse ...it's much louder then also with volume turned down completely
if anyone could help with advice , please do , i'm really confused and fed up with connecting , disconnecting , and the humming keeps me from working
Thnx
hawk