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In Reply to: suggestion.... posted by Sector-7G on June 08, 2004 at 08:13:07:
It was suggested that a string of LEDs under the cathode of the 5687 would be the best way to bias it. I have never tried fixed biasing nor using LEDs in that way. It will be a while before I build the design ,as I've just finished a SE EL34 amp and I am saving my pennies for a tube buffered volume control to go with it, but when I do I will certainly try both methods on the breadboard before I finalize it. Thanks for the reply.
Follow Ups:
Three or four red, 20 mA LED's will do quite well for the 5687. Anyway, have fun with it. If you build it heavier than you need to at first, there is more room to fiddle with things later. IMO a very good practice for evolving DIY projects. It has been cheaper for me in the long run!
regards,
Douglas
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Never fear. I am an accomplished "overbuilder" :). Thanks Douglas. Cheers.
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