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23rd November 2014, 06:12 AM
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#1 |
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diyAudio Member
Join Date: Oct 2013
Location: Jakarta, ID - Nagasaki, JP
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audible hum.trafo or groundloop?
hello there..i've been struggling w/ my DAC's hum which is appeared even i turned my volume knob to 0
 here's the oscilloscope trace at 2mV 1ms/div full :  half :  0 : 
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23rd November 2014, 09:05 AM
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#2 |
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diyAudio Member
Join Date: Dec 2012
Location: The Jurassic Coast, England. GB
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Images won't open but with volume control at zero, if there still is hum, I would say ground loop.
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Support for Fender, Marshall and all Valve Equipment; Audio Innovations, Audiorama FU29, Quad and Leak. www.jonsnell.co.uk |
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23rd November 2014, 01:55 PM
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#4 |
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diyAudio Member
Join Date: Dec 2012
Location: The Jurassic Coast, England. GB
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Use the Star system for grounding.
__________________
Support for Fender, Marshall and all Valve Equipment; Audio Innovations, Audiorama FU29, Quad and Leak. www.jonsnell.co.uk |
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