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Old 26th September 2010, 01:19 AM   #1
diyAudio Member
Join Date: Jul 2008
Default testing 8417's on mercury 1000

I have a mercury 1000 that does not have tube data for 8417's.

since the Mercury 1100A, 1100B, and 1100C use the same settings for testing 8417's as used for kt-88/6550/etc, I tested using kt-88 settings and just raised the load til I got the correct transconductance.

Anyone have updated tube data for a Mercury 1000 that includes 8417?

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Old 26th September 2010, 06:09 AM   #2
diyAudio Member
Join Date: Mar 2010
You did it right. Now you have the data, and should share it with other owners of that machine.
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Old 28th September 2010, 12:43 PM   #3
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Join Date: Jul 2008

just found out that the tube chart for a Mercury 2000 is good on a mercury 1000.

The only difference between a 2000 and a 1000 is a transister tester.

In the Mercury 2000 tube chart i have, the load is blacked out and hand changed to 50. I was using 45 thru guestimation.
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