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17th July 2009, 11:10 PM
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#4531 |
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Passive Aggressive
diyAudio Member
Join Date: Mar 2008
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Is that the Dun Mei Audio case from Ebay? Think Dun Mei is how its spelled.
Uriah
__________________
You can purchase LDRs anytime to build a standard LDR attenuator or to build my new LDR Attenuator "A Lighter Note". Email me. diyldr@gmail.com |
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18th July 2009, 02:24 AM
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#4532 |
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diyAudio Member
Join Date: Jul 2006
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yes dun mei chassis but i got it directly from china, much cheaper..
even with the current placement of the toroids, i dont hear any hum/hiss coming out of my speakers. very quite. thanks
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GB for DC coupled B1 buffer with shunt PSUs WIKI |
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18th July 2009, 07:04 AM
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#4534 |
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diyAudio Member
Join Date: Jul 2006
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oppss... its a diy 805 PP amp..
__________________
GB for DC coupled B1 buffer with shunt PSUs WIKI |
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18th July 2009, 07:18 AM
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#4535 |
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diyAudio Member
Join Date: Feb 2005
Location: Bucharest
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hum F5
Hi,
My F5 is very stable. But I have a problem: when you connect the CD player cable the hum is a very big ... I've tried several cables, but it's just the same ... Without cables, the F5 is very quiet. Can somebody help me with an advice?  Thancks! Vitalie |
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18th July 2009, 09:35 AM
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#4536 | |
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Official Court Jester
diyAudio Member
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
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Re: hum F5
Quote:
you probably have ground loop ; if that helps , write again
__________________
my Papa is smarter than your Nelson ! tnx to  clean  thread ; Cook Book ; PSM LS Cook Book ; Baby Diyaudio FORUM ; BAF Forum & Gallery
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18th July 2009, 04:12 PM
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#4537 | |
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diyAudio Member
Join Date: Jan 2007
Location: Sacramento
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Re: hum F5
Quote:
Make sure BOTH are plugged into the SAME outlet. If you can't do that, then use a quality power strip to supply power to both pieces of equipment. Most CD players are NOT grounded, so this may or may not be the problem. Ron
__________________
"If it doesn't work properly, hope it catches on fire"- Nelson Pass @ BA3 |
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18th July 2009, 09:52 PM
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#4540 | |
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diyAudio Member
Join Date: Apr 2008
Location: Carlisle, England
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Re: Re: hum F5
Quote:
I have a switchable ground on my amps. If connected to an MP3 player or an ungrounded device then I switch the earth in. If any earthed device causes hum I switch out the earth on the amp.
__________________
http://www.murtonpikesystems.co.uk PCBCAD40 pcb design software. |
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