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Old 18th November 2006, 07:55 AM   #1351
Leadvox is offline Leadvox  Brazil
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Smile my phothos

This is my SE 8Watts/c whit E34L.
Project a italian magazine Nuova elletronia.
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Old 18th November 2006, 07:55 AM   #1352
Leadvox is offline Leadvox  Brazil
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Default my photos

e34l single-ended
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Old 18th November 2006, 07:57 AM   #1353
rdf is offline rdf  Canada
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Nicely done!
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Old 19th November 2006, 06:22 PM   #1354
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Default Frank's line pre

My approach to building Frank's line pre based on russian 6H8C. No finished yet, but...
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Old 20th November 2006, 01:34 AM   #1355
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Default Re: Frank's line pre

Quote:
Originally posted by yagoolar
My approach to building Frank's line pre based on russian 6H8C. No finished yet, but...

Interesting design idea. That toggle switch has to go!

How about a pair of 6ax4 octal damper tube diodes on the power supply to balance the esthetics, similar size to 6SN7.
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Old 20th November 2006, 08:50 AM   #1356
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Default Re: Re: Frank's line pre

Quote:
Originally posted by rcavictim



Interesting design idea. That toggle switch has to go!

How about a pair of 6ax4 octal damper tube diodes on the power supply to balance the esthetics, similar size to 6SN7.

Do you mean to get rid of the switch?

And yes, I was thinking about tube rectifiers. Actually, russian 5U4C (lat. 5c4s) are similar to 6H8C in size. I will re-think the idea. Thanks.
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Old 20th November 2006, 08:53 AM   #1357
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Default Re: Re: Re: Frank's line pre

Quote:
Originally posted by yagoolar
Do you mean to get rid of the switch?
I think he means that it is not aesthetically pleasing.
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Old 20th November 2006, 09:16 AM   #1358
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Rrrrright. What do you suggest?
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Old 28th November 2006, 12:12 AM   #1359
Bernt is offline Bernt  Sweden
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Latest project up and running.

Click the image to open in full size.

This is a four channel OTL. The input tube is 6C45, phase splitter and drivers are 6H6 and the power tubes are six PL519 per channel. News is that PL519 is in "enhanced triode" mode, i.e an extra positive voltage referring to the anode (30 volt in this application) is connected to the screen grid. I do not know of anyone building an OTL this way before.
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Old 28th November 2006, 02:51 AM   #1360
arnoldc is offline arnoldc  Philippines
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WOW!

Holy tubes!
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