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Old 23rd August 2011, 10:57 PM   #1
emosms is offline emosms  Bulgaria
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Default ef861 - guitar preamp

Hi, I am working on the pentode chanel of a voxac15 heritage schematics
ef86, ecc83, 2xEL84
mine is>
ef85, 6n2p, 2x6p14p
I found an alternative pentode preamp schematics with ef85, but not content with the result.
Not a half of the highs and the compression:
Vox AC15 Heritage Handwired - YouTube
Is it possible to work out something with some of these
ef861 (got them today)
ef184
6j1p (russian 7 pin pentode)

Еspecially with ef861, dont know where to start from about the design.
Hard to find any audio schematics with it (I know it is not its designation)
Greets
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Old 24th August 2011, 10:19 PM   #2
emosms is offline emosms  Bulgaria
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no one tried ef861 for audio?
no one ever found something suitable to replace ef86?
is that the only audio (pre-stage) pentode in the universe?
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Old 24th August 2011, 10:23 PM   #3
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Quote:
Originally Posted by emosms View Post
no one tried ef861 for audio?
EF861 is similar to E180F and 6688, which if you search you will see are well thought of and used for audio.
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Old 24th August 2011, 10:49 PM   #4
emosms is offline emosms  Bulgaria
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not used to look at the number only named (6688)
I thing I searched for e180f, but not much
guitar preamp usage?
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