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Old 22nd March 2005, 08:11 PM   #1
pete.a is offline pete.a  United Kingdom
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Question Cdrom hum

Im currently using an old cd rom as a cdp with a LM4780 chipamp.
What difference to the output will there be if any , should i change from the headphone socket on the front . This system is currently in the workshop, and i use an old Rotel 820 as the main amp until the chipamp enclosures finnished. But when testing the chip amp i noticed that the cdrom humm's slightly. Would this change if i used the audio out socket on the back of the cdrom.
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Old 22nd March 2005, 11:02 PM   #2
MCLL is offline MCLL  Hong Kong
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Is it using old computer power supply to cd-rom for power source?
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Old 23rd March 2005, 01:46 AM   #3
Leolabs is offline Leolabs  Malaysia
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Is the amp hum or the cdrom hum?????

If the amp hum,should be a ground loop problem.
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Old 23rd March 2005, 03:15 PM   #4
pete.a is offline pete.a  United Kingdom
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Default Power supply

Yes im using an old power supply from an old large disk drive i found at the local dump. There's no hum what so ever from the chip amp when i use my sony md (pocket Type ).
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