Cdrom hum

pete.a · 22nd March 2005, 08:11 PM

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.

MCLL · 22nd March 2005, 11:02 PM

Is it using old computer power supply to cd-rom for power source?

Leolabs · 23rd March 2005, 01:46 AM

Is the amp hum or the cdrom hum?????

If the amp hum,should be a ground loop problem.

pete.a · 23rd March 2005, 03:15 PM

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 ).

22nd March 2005, 08:11 PM	#1
pete.a diyAudio Member Join Date: Jul 2002 Location: Nottingham	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.

23rd March 2005, 03:15 PM	#4
pete.a diyAudio Member Join Date: Jul 2002 Location: Nottingham	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 ).

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Any one know this DVD/CDROM KIT ?	ECBLN	Digital Source	0	17th May 2008 07:05 PM
What's your CDROM player look like??	Leolabs	Digital Source	3	24th November 2006 12:07 AM
Different CDROM,different sound??	Leolabs	Digital Source	1	20th August 2006 01:54 AM
CDROM control kit	Lupulroz	Swap Meet	35	13th August 2006 05:39 PM
Anyone knows NEC CDROM?	omar	Digital Source	2	8th January 2004 07:45 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

22nd March 2005, 11:02 PM	#2
MCLL diyAudio Member Join Date: Dec 2002 Location: Hong Kong	Is it using old computer power supply to cd-rom for power source?

23rd March 2005, 01:46 AM	#3
Leolabs diyAudio Member Join Date: Dec 2004 Location: Bukit Mertajam	Is the amp hum or the cdrom hum????? If the amp hum,should be a ground loop problem.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)