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DIY HiFi Forum Welcome! Need support, you got it. Or share your ideas and experiences. |
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DIY HiFi Forum Welcome! Need support, you got it. Or share your ideas and experiences. |
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In Reply to: Lux posted by bcherry on October 4, 2007 at 01:38:49:
Brian,
Someone familar with my work emailed about this.
I have been doing this for years on all my SET Guitar Amplifiers. Basically I call it reactor follower. The pick is of my 25W single 6550 guitar amp in use with the Bears.
It's not an interstage as you do not have a transformer.
A few things I would change in your circuit is the following:
1) The input impedance of dual 5687 is too low for EF86.
2) The swing of the choke is too low for the 300B.
What I would do is swap out the 5687 with a 12B4 and use a choke between 4k and 5k dcr so you get a swing of 2-3x what the 5687 can do. Also you can up the resistor into the 12B4 to 680k or more and it would be killer.
Thanks
Gordon
J. Gordon Rankin
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Follow Ups
- Reactor follower doing it for years in my guitar amps, better suggestion - Gordon Rankin 11:01:20 11/08/07 (1)
- lux driver measurements - bcherry 20:46:54 04/02/08 (0)
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