|
Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
|
|
|
Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
|
In Reply to: Re: Re GroverG's amp......... posted by Vinnie on January 24, 2007 at 14:23:43:
all you do is replace the cathode resistor/capacitor for the 6N7 with three red led's in series (mind polarities) with positive end connected at tube. For the EL-34, Replace the 10K dropping resistor in the bias circuit with an additional 10K pot. The center tap on the pot closest to capacitor in bias circuit goes to the 845, center tap on additional pot goes to grid of EL-34. Replace the bias resistor/capacitor on the EL-34 with a normally closed 1/4" audiojack between cathode and ground to read the current on the EL-34, normally set to 25-30 ma. If you don't yet have your power transformer, send me an e-mail.......I picked up some NOS beauties at an estate sale and they are ideal for an 845 integrated. dryfly_6x at msn dot com.Roger Hill
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- Don't have schematic, but.. - Roger Hill 09:17:11 01/25/07 (1)
- Re: Don't have schematic, but.. - Vinnie 14:23:43 01/25/07 (0)
Top of Page ]
[ Contact Us ]
[ Support/Wish List ]
[ Copyright © 2025, Audio Asylum, all rights reserved ]
