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Old 28th April 2010, 05:48 PM   #131
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Quote:
Originally Posted by flancfuster View Post
After tube output modifications, the highs are better, bass is deeper and some HF interferences are gone (with Raytheon I could hear interferences probably from other devices nearby and I had to create a shield for them). For testing purpose I've build a small and simple I/V stage with LM4562 and compare them. I have to say that LM is good, but tubes have something special to my ears. Amplified with a SE 6C33C (Borbely schematic) is definitely a beautiful match for me.
To answer the question regarding 2XTDA vs. 4XTDA, personally I haven't heard any improvements with 4XTDA.
I recommend TDA1541A with tube output(lampizator or whatever you like) and SE amplifier.

Regards,
Sorin
PS. Tubes are these ones(I'm not very good with Cyrillic letters, it may be 6H1P or 6J1P :
Attachment 169032
Thanks for the comments and thanks for the photo. From there I can see it is neither 6H1P or 6J1P.
Letter: Ж does not have real equivalent. We use in latin lettering eq.
What I have understood it is not sub-miniature tube but miniature: 6Z1P-EV/6Sh1P-EW
Which means totally different tube!?
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Old 3rd May 2010, 08:14 PM   #132
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Quote:
Originally Posted by Bassivus View Post
Thanks for the comments and thanks for the photo. From there I can see it is neither 6H1P or 6J1P.
Letter: Ж does not have real equivalent. We use in latin lettering eq.
What I have understood it is not sub-miniature tube but miniature: 6Z1P-EV/6Sh1P-EW
Which means totally different tube!?
Hi Bassivus,
For your info I've attached data-sheet of the tube I'm using.

Regards,
Sorin
6j1p.GIF
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Old 15th May 2010, 12:33 PM   #133
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If somebody is interested, i sell my heavy modified 4xTDA1541A DAC HERE.

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