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Old 25th January 2012, 02:41 AM   #3871
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Thanx
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Old 26th January 2012, 12:56 AM   #3872
Zekk is offline Zekk  Singapore
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Hi mitube ... it's a stupendous acheivement!

Am seeking for a easy built with affordable tubes to see me thru my twilight years.

We'll be delighted and thankful if you can come up with a schematic to share.

BTW, came a similiar one on the "audiophiletalk" forum.

Enjoy your fruit of success!

Thanks!

Last edited by Zekk; 26th January 2012 at 01:00 AM. Reason: addressing the right guy.
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Old 28th January 2012, 10:37 PM   #3873
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Quote:
Originally Posted by Soundude View Post
I have to share this one amp with you since I get alot of questions from this one, I call it Little Gem, lets see if you can figure this one out, I this amp is more than what it seems and somebody out there probably can tell right away...outputs are scotts and power tranny is Chicago...sound is really unbelievable which has everyone questioning who heard it...I'll also give you a pick of the KT66...
Guess nobody can see the indifferences with this amp...I call it Little Gem because it looks like a ordinary single ended amp...far from it..this little think has a output power of 24 watts a channel, if you look close at the tubes there is 2 7189s in one envelope so the amp is really push pull...6U8 in the front end, the first amp is pentode and the triode section is the phase inverter....power supply is diodes before the tube rectifier. This amp is definitly a performer it actually can drive my infinitys and moves the woofers with no problem. With a good effecient speaker this amp has alot gain and sound is excellent, and bass is really low and solid...highs are crystal..thats the scott outputs, anyone who has ever had a scott knows the quality of these trannies...happy building!!
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Old 29th January 2012, 02:37 PM   #3874
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Question to everybody
Has someone use a 6H13C (the 2 triodes in parallel)?
I run into a couple of these and they look really nice.
they seem to work from 100V on the anode already
Thanks!!
Gerrit
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Old 30th January 2012, 03:16 AM   #3875
Cassiel is offline Cassiel  Libya
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Default 6SN7 Push Pull

It was a grey, ordinary amp. It wanted a sex change....I said no way instead I gave him new clothes. Seems happier now. The sign warning high voltages is there for two reasons: to remind me this motherfkr gave me the shock of my life and to cover a rounded hole (changed my mind about using a tube rectifier). Oh yes there are two paint schemes there, can't decide which one I like less.
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Old 30th January 2012, 04:40 PM   #3876
Stixx is offline Stixx  Germany
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Nice ATC's...

The camouflage paint on your amp is also.... special!
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Old 30th January 2012, 10:58 PM   #3877
Cassiel is offline Cassiel  Libya
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Quote:
The camouflage paint
I was reading a book about World War II German aircraft and guess I got inspired. Man, how I love those paint jobs! Mine is a free interpretation.
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Old 31st January 2012, 12:07 PM   #3878
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Hola "Cassiel"!
Do you want to show us the inside and tell us more about the circuit?

Peter
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Old 31st January 2012, 03:52 PM   #3879
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Quote:
Originally Posted by head1962 View Post
Question to everybody
Has someone use a 6H13C (the 2 triodes in parallel)?
I run into a couple of these and they look really nice.
they seem to work from 100V on the anode already
Thanks!!
Gerrit
I used this tube in my headphone ampl. for 300 ohms Sen.HD580. Than I changed
to RCA 6AS7, that sounds better. The sound is amazing!
https://picasaweb.google.com/1095707...79080498375714
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Old 1st February 2012, 12:45 AM   #3880
Cassiel is offline Cassiel  Libya
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Quote:
I used this tube in my headphone ampl. for 300 ohms Sen.HD580.
Could you share the schematic? I also have RCA 6AS7's and I want to do something with them. Cathode followers, not SE. Yuk!

Quote:
Hola "Cassiel"!
Cassiel is known for simply watching the events of the cosmos unfold with little interference. Which means I do little and when I do nothing changes.

Quote:
Do you want to show us the inside and tell us more about the circuit?
Your wish is my command. It's the third amp I do with the same circuit but different tubes. First one was 5965+ 6V6's; second one 6SN7+EL84s; third one 6SL7+6SN7. Why am I doing such a thing, you may ask. Well, after building some Push Pull amps I finally found my favorite phase splitter circuit (a floating paraphase stolen from a Leben amp) so what I'm doing now is checking out different tubes. It's all about the circuit really, there are small differences between these tubes but all the amps sound great. This one didn't sound as good as the others. I wondered why, then I realized this one had a choke (Hammond) and the others didn't. Took the choke out (filter section) and that was it: now it sounds as good as the others. Everybody raves about chokes and LTP's with current sources.....well, NOT me. I don't need them, nor do I need special caps.

The heatsink is there for decorative purposes, so you guys don't have to see a black hole.
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