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Old 17th August 2011, 01:30 AM   #1
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Default Hickok 539b switch settings for 6SL7

I have 6SN7 on my roll chart but no 6SL7. Should I use the 6SN7 settings? If anyone can find them on their roll chart let me know.

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Old 17th August 2011, 03:05 AM   #2
GaryB is offline GaryB  United States
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Quote:
Originally Posted by famousmockingbird View Post
I have 6SN7 on my roll chart but no 6SL7. If anyone can find them on their roll chart let me know.
Here is data from a Hickok 600 roll chart that I downloaded a few years back. I think these settings are the same as the 539 or at least they should be useful in determining how to translate 6SN7 settings for the 6SL7.

6SN7

6.3 JX - 4506 - 1 23 79 P4 2600 Triode 1

6.3 JX - 2103 - 5 23 79 P4 2600 Triode 2

6SL7

6.3 JX - 4506 - 1 7 58 P4 1250 Triode 1

6.3 JX - 2103 - 5 7 58 P4 1250 Triode 2
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Old 17th August 2011, 04:30 AM   #3
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The Hickok 600 is not the same as the 539B/C. Here are the correct settings as listed in the Obsolete Supplementary Data.

Fil: 6.3V
Selectors: HY-4506-2 (triode 1)
Selectors: HY-1203-5 (triode 2)
Bias: 0.4V
Shunt: ---
Press: P4
Range: D
Min Mut Cond: 1000
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Last edited by HollowState; 17th August 2011 at 04:54 AM.
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Old 17th August 2011, 06:00 PM   #4
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Thanks HollowState, Same switch settings as 6SN7 but different bias and min. gm.
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