Rickard Berglund 845 driver (Sound Practices 94/95)

[kevin2a3]

If you have tried or have comments on Rickard Berglund's 845 se using a screen grid driver in the Sound Practices 1994/95 please share your experience.
Thank you!

 

[smoking-amp]

845 is a directly heated triode. No screen grid.

Perhaps you could post a schematic?

 

[rotaspec]

I took a quick look, and the article is about a screen-driven driver for output tubes like the 845.

Try A Screen Driven Driver Stage Article By Rikard Berglund From Sound Practices Issue 8, Winter 1994/1995

 

[kevin2a3]

845 is a directly heated triode. No screen grid.

Perhaps you could post a schematic?

Here it is ...

http://i98.photobucket.com/albums/l...screen driven driver-d2.0 cct_zpsat3aqioe.jpg

http://i98.photobucket.com/albums/l...screen driven driver-d2.0 psu_zpsnzuvftks.jpg

 

[multi]

I used the 5881 screen driven; i had tried many circuits but could never get good dynamics; the amp was transformed had very good dynamics. The 845 in my amp had 750 volts so made it very easy to use the screen driven 5881. Most 845 commercial amps i have heard sound very dull and lifeless. My speakers are over 100db so do not need any more power the screen driven 5881 works very well with 813's too
Phil

 

[Pyka]

The first link（Amplifier circuit） can't be opened.

 

[dhaen]

I can open it.

 

[Pyka]

Already can see the circuit, thank you！