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Old 5th January 2013, 05:20 PM   #3541
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buzzforb and ZM - comments always appreciated
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Old 5th January 2013, 05:24 PM   #3542
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I would erase my name, if it were me!
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Old 7th March 2013, 09:12 AM   #3543
Tyimo is offline Tyimo  Hungary
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Hi!
Is it possible to use 2sk1529/SJ200 instead of IRFP mosfets?

Greets:
Tyimo
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Old 7th March 2013, 09:55 AM   #3544
Zen Mod is offline Zen Mod  Serbia
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yes
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Old 7th March 2013, 10:11 AM   #3545
Tyimo is offline Tyimo  Hungary
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Thanks!
Without any mods?
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Old 7th March 2013, 12:50 PM   #3546
Zen Mod is offline Zen Mod  Serbia
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usual care with biasing

check pinout - I'm lazy to remember trivia like that

funny - ask me while I'm sleeping , and I'll give you pinout for 2N3055 and 12AT7

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Old 7th March 2013, 04:56 PM   #3547
Tyimo is offline Tyimo  Hungary
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O.K. Thanks!
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Old 12th March 2013, 09:54 PM   #3548
6L6 is offline 6L6  United States
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What's the quick 'n dirty to increase the bias? I've got the pot cranked and can't get it past .1v across the source resistors, with zero DC offset...

I'm using Fairchild 16N25/12P20 outputs. K170/J74 8.5 Idss

FWIW, it does sound really nice...
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Old 13th March 2013, 05:57 PM   #3549
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6L6

From memory I believe you lower R9

Zen Mod can you confirm?

Best

Bob
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Old 13th March 2013, 06:06 PM   #3550
Zen Mod is offline Zen Mod  Serbia
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yup

set P1 to max resistance

decrease R9 to 5K6

fiddle P1
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