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Old 26th November 2009, 12:12 PM   #31
rmgvs is offline rmgvs  Netherlands
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Join Date: Apr 2001
Location: Netherlands
Default it's the grounding stupid!

A rather long journey comes to an end. Problem of noise solved. Rerouting the ground of the power supply by just a few inches solved the problem. Lesson learned: i did know that grounding is crucial for hum, but now i know it also can cause hiss. The preamp is quiet now and plays as it should, comparable to the original one.
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Old 1st March 2012, 11:45 AM   #32
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Join Date: Jan 2012
Default Diagram of MVT MK2

Originally Posted by jez View Post
Small heatsinks are used for output devices but not any others in MVT.They run pretty hot so are probably needed.
P.S. MVT= (I am fairly confident) Micheal Vaughn Thomas, also designer of the Dr. Thomas power amp and original "The Preamp" from MF....just for info
Do any one have the original Diagram of this MVT MK2 ?
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