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10W+10W EL34+ECC83 single-ended Class A Stereo amplifier Kit wlx
10W+10W EL34+ECC83 single-ended Class A Stereo amplifier Kit wlx
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Old 2nd August 2016, 08:13 PM   #11
quassar is offline quassar  Romania
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Originally Posted by quassar View Post
Hello Guys,
i am back here again looking for you advice, and opinion, i have ordered this diy amp board from ebay,from here, it is still on the way, so i dont have it yeat, i am looking for a schematic, because the seller did not provide a clear schematic, just this fuzzy one i had attached. Please tell me what you believe about this board.

It is without tubes, and transformers.

Thank you guys !
Hello guys, sorry for not being active for quite some time, but life is full of action and simply there is not enough time, but i try to make some time for my projects too.
I had finished the build of the amp in this post, and i will share with you some pictures,
since inside is known, the final form is like this, hope you like it, please live a comment, if you like it or not, i accept constructive critics and advice, i am just a human, and i learn from my mistakes
Here come the amp:
Attached Images
File Type: jpg CBAmplifiers_Cover .jpg (84.4 KB, 770 views)
File Type: jpg photo1.jpg (422.5 KB, 768 views)
File Type: jpg photo2.jpg (460.7 KB, 748 views)
File Type: jpg IMG_0865.jpg (387.6 KB, 713 views)
File Type: jpg IMG_0872.jpg (764.4 KB, 698 views)
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Old 2nd August 2016, 09:51 PM   #12
rongon is offline rongon  United States
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Location: Across the river from Rip's big old tree...
10W+10W EL34+ECC83 single-ended Class A Stereo amplifier Kit wlx
I really like it! Lots of curves and a 1950's 'swoopy chrome' look. It reminds me a little of the old Automat in NYC. The big springs around the output tubes are a nice, fun touch. Are those 6V6 tubes?
--
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Old 3rd August 2016, 01:14 PM   #13
jean michel is offline jean michel  France
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Join Date: Apr 2013
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hello ,

i comparate the build and use tube TV ( EL 300 drived to small ECC 83 )

2 x 8 W to 1 Khz , the OPT build to Hexacom .

Attached Images
File Type: jpg Ampli SE UL 300 - ECC 83 - 2 x 8W.JPG (223.6 KB, 384 views)
File Type: jpg 8.5 W a 1 Khz.JPG (134.2 KB, 348 views)
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Old 3rd August 2016, 08:25 PM   #14
quassar is offline quassar  Romania
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Join Date: Jun 2015
Hi mate, nice work you have done, with El300, and good OT you get a decent sound, but only 8 Watt ... hunt the good sound not the power, like me ....

Last edited by quassar; 3rd August 2016 at 08:32 PM.
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Old 3rd August 2016, 08:33 PM   #15
quassar is offline quassar  Romania
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Join Date: Jun 2015
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Originally Posted by rongon View Post
I really like it! Lots of curves and a 1950's 'swoopy chrome' look. It reminds me a little of the old Automat in NYC. The big springs around the output tubes are a nice, fun touch. Are those 6V6 tubes?
--
Hi, dude,
I am glad you like it, i give it away to one of my friends, as a birthday present.
the tubes are 6P6S rusian equivalent to 6V6, and the preamp tube is ECC83.
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Old 3rd August 2016, 09:21 PM   #16
Ketje is offline Ketje  Belgium
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Perhaps it allright on the circuit board, but in the schematic the diode D1 is the wrong way.
Mona
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Old 4th August 2016, 11:24 AM   #17
LAZAROIU is offline LAZAROIU  Romania
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Join Date: Nov 2008
Location: 135200
Quote:
Originally Posted by jean michel View Post
hello ,

i comparate the build and use tube TV ( EL 300 drived to small ECC 83 )

2 x 8 W to 1 Khz , the OPT build to Hexacom .

The EL300 tube is a very interesting and obtain good performance in audio amplifier applications.
A notice about your construction output OT is that transformers are small and I think you can get better performance if you use these sections for OT somewhat higher.
Low frequency response to be much better at 0dB, in my opinion!
In the picture I have another solution EL300 and amplifier with ECC83:
Attached Images
File Type: png SE 10W cu EL300 si ECC83.png (35.3 KB, 331 views)

Last edited by LAZAROIU; 4th August 2016 at 11:28 AM.
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Old 4th August 2016, 11:35 AM   #18
jean michel is offline jean michel  France
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hello ,

Thank Lazariou

the small stock N O S ...
Attached Images
File Type: jpg EL 300 X 25 !.JPG (199.0 KB, 350 views)
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Old 4th August 2016, 12:19 PM   #19
LAZAROIU is offline LAZAROIU  Romania
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Congratulations!
I envy you!
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Old 4th August 2016, 03:38 PM   #20
Ketje is offline Ketje  Belgium
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EL300 ?? not rather EL500 ?
Mona
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