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Old 29th June 2004, 01:04 PM   #1
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Talking My New Project Completed

I spend 6 months to complete 2 monoblocks

6C33C + 6SL7


http://f1.pg.photos.yahoo.com/ph/red...bum?.dir=/dcce


Nice sounding amp., warm with details, plenty power.
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Old 29th June 2004, 01:12 PM   #2
dhaen is offline dhaen  Europe
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Nice work Redwine What transformers are they?
Are you going to show us the schematic?
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Old 29th June 2004, 01:15 PM   #3
benny is offline benny  Australia
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nice effort... bet you feel good hey? it always feels good when you finnish a project.. especially when you finally get to hear it!

apart from that, maybe you should've posted in the photo galery thread... a dedicated thread for dedicated people like you dedicated enough to take photo's and put them up on the net... something i would do if i could be bothered... but that's another story.

cheers
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Old 29th June 2004, 01:16 PM   #4
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Hi,

They are James Audio Transformer. I place the order for the manufacturer for 2 power and 2 output transformers (600 ohm).

I will show u the schematic later on. The circuit is really very very simple. 5 - 6 pcs. of resistor + 1 pcs. coupling capacitor + 2 tubes


This power monoblock is very hot as the filament current is high.

Rgds,
Redwine.
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Old 29th June 2004, 01:28 PM   #5
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The schematic is here.
Attached Images
File Type: gif 6c33c_6.gif (16.6 KB, 387 views)
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Old 30th June 2004, 09:51 AM   #6
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Hello. I recommend you to indicate that the original schematic diagram of your amplifier was presented by Mr. Yoshio Nasu in a Japanese magazine named "Radio technology." I believe it is a matter of courtesy.
Regards.
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Old 2nd July 2004, 12:14 AM   #7
G is offline G  United States
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Quote:
Originally posted by cpu_bach
Hello. I recommend you to indicate that the original schematic diagram of your amplifier was presented by Mr. Yoshio Nasu in a Japanese magazine named "Radio technology." I believe it is a matter of courtesy.
Regards.
If Mr. Nasu presented it in a magazine then he obviously expected someone to build it. I doubt if he is so arrogant as to expect every builder to post his name and acknowledge his cunning design. It's a tube amp. Not a Picasso. Good job redwine! Beautiful work!
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Old 2nd July 2004, 02:05 AM   #8
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Thanks for all of the members appreciation.

Actually the schematic diagram is download from website.

I really appreciated the design of this circuit as I understand that simple is the best.

Before I consider which project to start, I think about various type of tubes and circuit......

I dont want to look for expensive power tubes just like WE300B, Genalex KT88.......

My Requirement at my first thinking :

1) Single end Class A

2) Power 12W above

3) Triode output

4) Simple circut design with NO negative feedback

Finally I decided either 6C33C or GM70.....but consider the operating voltage for 6C33C is lower than GM70 (high voltage is more dangerous), so that is the choice.

I make this thread is just want to share my happiness with all diyers.

Rgds,
Red
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