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Old 2nd January 2013, 02:51 AM   #4571
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Join Date: May 2002
Default 300B amp

Happy New Year everyone! These holidays have finally allowed me to finish my latest amp creation.

Very simple design - single input/driver stage using C3o tube (6.3V version of C3m), cap-coupled to 300B. I'm using permalloy Tamura iron and a Jensen silver foil coupling cap. I'm also using some new heater circuits (Rod Coleman design) which are really quite novel.

Sound is excellent. Very nice transparency, even better than my 3-stage designs. Fine details are unbelievable... a little better than my big 845 amp if I can be honest. Not quite the ultimate transparency of the 845 though.
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Old 2nd January 2013, 05:44 AM   #4572
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Originally Posted by audiogenesis View Post
Happy New Year everyone! These holidays have finally allowed me to finish my latest amp creation.

Very simple design - single input/driver stage using C3o tube (6.3V version of C3m), cap-coupled to 300B. I'm using permalloy Tamura iron and a Jensen silver foil coupling cap. I'm also using some new heater circuits (Rod Coleman design) which are really quite novel.

Sound is excellent. Very nice transparency, even better than my 3-stage designs. Fine details are unbelievable... a little better than my big 845 amp if I can be honest. Not quite the ultimate transparency of the 845 though.
I also built a 300B amp but with TJ Full music carbon plates and a 6SN7 driver. I love it and are playing right now. I also just finished a preamp using C3m tubes which is excellent. Do you have a schematic ?
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Old 2nd January 2013, 06:31 AM   #4573
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Location: Italy, Milan
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Originally Posted by mhouston View Post
Gonzo: neat looking.
You meant Bonzo, right? ;-)
Thank you, I like simplicity. I could have made them more compact, and I think I will rebuild them soon.
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Old 2nd January 2013, 08:29 AM   #4574
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Originally Posted by bonzo15011978 View Post
You meant Bonzo, right? ;-)
Thank you, I like simplicity. I could have made them more compact, and I think I will rebuild them soon.
Bonzo, sorry. I should have known. When I was a kid the dog next door was called Bonzo.
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Old 2nd January 2013, 08:57 AM   #4575
male42 is offline male42  Russian Federation
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audiogenesis.

welcome. You can see as you turn on the tube c3m. I mean scheme.
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Old 2nd January 2013, 10:24 AM   #4576
dady is offline dady  Balearic Islands
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Quote:
Originally Posted by male42 View Post
audiogenesis.

welcome. You can see as you turn on the tube c3m. I mean scheme.
Hi Anatoliy. Are you the man of the web link?
I like the turntable with this monster Chernovil tonearm.
Very good finish of your DIY construction.
Best Regards and Good year.
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Last edited by dady; 2nd January 2013 at 10:33 AM. Reason: Wrong sintaxis
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Old 2nd January 2013, 10:49 AM   #4577
male42 is offline male42  Russian Federation
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hi, Dady, yes its me. thank you a lot.
i do my best
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Old 2nd January 2013, 12:24 PM   #4578
Gost22 is offline Gost22  Bolivia
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Hi
Here's my little tube preamplifier with ECC82-ENJOY!!!
Hi all!
Made a mistake-instead tube ECC82 should be valve ECC88!!
Enjoy!
Cheers!
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Old 3rd January 2013, 06:23 AM   #4579
jervill is offline jervill  United Kingdom
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Originally Posted by Arckivio View Post
Really classy layout on this amp. Looks so classy.
Thank you. Here's the bottom plate with me and my son's handprints and his handwritten name:
Click the image to open in full size.
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Old 3rd January 2013, 06:25 AM   #4580
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Thank you. Here's the bottom plate with me and my son's handprints and his handwritten name:
Click the image to open in full size.
That's different.
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