Hallo, I have purchased this amplifier and I want to upgrade the internal circuit but there are many type on web.
Someone is kind enough to post one seriously working circuit with all correct value ?
Regards
Paolo
Someone is kind enough to post one seriously working circuit with all correct value ?
Regards
Paolo
There are a number of smaller differences between different deliveries of these amps, so the best method to get a circuit diagram that is correct for your amp is to mark up your own version of the diagram.
If you feel competent to improve the internal circuit, you should also be able to correct the published schematic - with a little effort..
The 6n1 tubes can successfully be replaced by ECC85.
The common of the OPT is grounded since the amp applies some (moderate) GFB.
If you operate in triode mode you can disconnect the GFB if you want, and make the output floating.
Here is a link to a diagram I helped a friend to mark up for an amp he had got early this year: Music Angel: DIY Skjema for MA KT88
Your amp may be different.
Svein.
If you feel competent to improve the internal circuit, you should also be able to correct the published schematic - with a little effort..
The 6n1 tubes can successfully be replaced by ECC85.
The common of the OPT is grounded since the amp applies some (moderate) GFB.
If you operate in triode mode you can disconnect the GFB if you want, and make the output floating.
Here is a link to a diagram I helped a friend to mark up for an amp he had got early this year: Music Angel: DIY Skjema for MA KT88
Your amp may be different.
Svein.
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