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My sound from MIG-29 tubes

post #1 of 7
11/4/10 at 1:24pm
Thread Starter 

Very linear tubes....of course.....6S33S.

Pretubes are russian amazing 6E5P. Two power CLCRC channels. I built it this spring.

Sorry....I have a mistake for post the pfoto.

I'll try later....

 

 

Amp


Edited by azazello - 11/4/10 at 4:03pm
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post #2 of 7
11/4/10 at 4:13pm
Thread Starter 

I managed to attach the actual image, see edited post above.

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post #3 of 7
11/4/10 at 4:19pm

very nice work there..what sort of specs does that amp have? Importantly, how are you liking the sound?

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post #4 of 7
11/4/10 at 4:53pm
Thread Starter 

Freq. band is more 25-30000 Hz, Input signal about 150 mv. Outputs for speakers - 8 ohms. Output power about 12watts.

Amp consist 2 stages!

Ra = 1200 ohms, alpha about 6. Iron - 25 sq. cm, Ua = 210v, -U=72 v. Ia=270 ma. Ua6E5P=162v, Ia=30ma.

All caps are Nichikon, cathode shunts - Black Gate, rect. diods - BYV26E.

No hmmm in my 96 db Fostex206E in hornes. The sound is.....something like good for me..../Sorry for my bad English....!/.


Edited by azazello - 11/4/10 at 4:58pm
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post #5 of 7
11/4/10 at 5:04pm

v nice casework.

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post #6 of 7
11/4/10 at 6:13pm

Very nice work!  Did you develop the circuit yourself or are there schematics out there?

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post #7 of 7
11/5/10 at 6:55am
Thread Starter 

This is russian standart schematic, but modes of 6S33S and 6E5P are according some my listening and decisions and possibility of PSU.

I didn't like sound with Ua-c=180v, but with Uc-a=220v the sound was agressive. Output transformer was made under advices of Russian and my friend tube Guru A.Manakov /thanks Anatoli!/. All stuff of PSU is my decision with my calculations.

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