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Post by mattspl on Oct 9, 2022 13:58:38 GMT
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Post by MartinT on Oct 9, 2022 14:12:34 GMT
Do report back.
Have you tried all the normal things to get rid of ground loop hum?
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Post by HD Music & Test on Oct 9, 2022 15:05:58 GMT
Here's the rub This is NOT ground IT's EARTH lol
The two are NOT the same ground is a voltage reference usually 0Vdc NOT earth as in mains safety line
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Post by mattspl on Oct 9, 2022 15:57:54 GMT
Do report back. Have you tried all the normal things to get rid of ground loop hum? I’ve tried disconnecting the gnd connection at one end of the various xlr cables. That made things worse. There’s a possibility it could be the BSS fds334T speaker Managment that everything runs through, but thought I’d give the ifi gnd defenders a try on the active speakers and can also try them on the BSS unit and my Dac/Pre. Mains and signal cables are all in close proximity, which probably doesn’t help, but due to the location of my equipment on a shelf, there’s nothing I can do to fix this. All mains cables are aftermarket and shielded though. |
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Post by MartinT on Oct 9, 2022 16:21:03 GMT
If the shields connect through, rather than connect at one end, that won't be helping.
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Post by mattspl on Oct 9, 2022 17:38:39 GMT
I did try 1 end vs both ends, but there’s was a much louder hum when only connected at one end.
At the moment, there’s a combination of a low frequency hum, a buzz and pink noise hiss. None of it is very loud, but clearly audible when no music is playing with your head near a speaker.
Muting a speaker in the BSS unit dramatically reduces the problem.
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