Music Angel KT88 correct circuit

geppo861 · 27th March 2010, 09:55 AM

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

geppo861 · 27th March 2010, 12:54 PM

Also, my version have 6n1p tubes.
The common of the output trasformer is grounded or not ?

Svein_B · 27th March 2010, 03:06 PM

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.

geppo861 · 27th March 2010, 05:41 PM

Many thanks,seem the same.
Danish, very hard to translate !!!!!!!!!!!!!!!

geppo861 · 27th March 2010, 06:02 PM

In that forum there is one dedicated section for a Music Angel KT88 type !!!

geppo861 · 30th March 2010, 10:28 AM

Can be considered ok this wiring modification for a god listen ?
Paolo

juliovideo · 30th March 2010, 06:58 PM

--

Music Angel XD-800MKIII reworking

--

27th March 2010, 09:55 AM	#1
geppo861 diyAudio Member Join Date: Nov 2009	Music Angel KT88 correct circuit 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

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27th March 2010, 12:54 PM	#2
geppo861 diyAudio Member Join Date: Nov 2009	Also, my version have 6n1p tubes. The common of the output trasformer is grounded or not ?

27th March 2010, 03:06 PM	#3
Svein_B diyAudio Member Join Date: Oct 2005	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.

27th March 2010, 05:41 PM	#4
geppo861 diyAudio Member Join Date: Nov 2009	Many thanks,seem the same. Danish, very hard to translate !!!!!!!!!!!!!!!

27th March 2010, 06:02 PM	#5
geppo861 diyAudio Member Join Date: Nov 2009	In that forum there is one dedicated section for a Music Angel KT88 type !!!

30th March 2010, 06:58 PM	#7
juliovideo diyAudio Member Join Date: Jan 2009	-- Music Angel XD-800MKIII reworking --

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