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Old 21st April 2004, 12:16 PM   #1
trancy is offline trancy  Slovenia
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Default el34 se schematic opinion

I found simple schematic fot SE with el34, and i want to ask you all, if its ok or should I change something ...I havent so much expirience with tubes like you boys.....

thanks
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Old 21st April 2004, 03:27 PM   #2
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Looks fine but don't expect to much power at that B+ level. Say around 2watts. I used mine at 400volts on the plate to get 3.5 watts. I say go for it. Carefull with the feedback connection only, the rest is allright. I find that due to the feedback, some buzzing might take place. But SE with some small amounts of feedback is great and ideal for better bass control
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Old 21st April 2004, 03:37 PM   #3
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Replace the 1N4007 diodes with UF4007 diodes and instead of the bridge rectifier shown for the filaments, build a bridge with four Schottky 5 amp diodes, all available from Mouser. Use a small piece of perf board from Radio Shack to build the filament bridge. Have fun!

Roger Hill
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Old 21st April 2004, 03:52 PM   #4
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Oops! Just noticed where you are. Go ahead and build as designed. If you then want to try the Uf/Schottkys send me an e-mail with your mailing address and I'll build replacement rectifiers for you. The components are easily available and inexpensive here in the USA.
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