Low cost class A Hi-Fi amplifier 807 S.E. Ultralinear - Pentode drivers [6G6G]

[pilovis]

Low cost class A 807 amplifier S.E. Ultralinear - unconventional pentode drivers

Go against the tide

Link to download full size schematic: http://www.lovisolo.com/valvole/807b.jpg

Audio output transformers: http://www.enovaz.it/prodotto-142985/TU022.aspx

807 tube specs: http://scottbecker.net/tube/sheets/030/q/QE06-50.pdf (QE06/50 = 807 = VT 100)

6G6G tube specs: http://www.r-type.org/exhib/aaa0141.htm

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

 

[pilovis]

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

 

[Paul Scearce]

Nice work. I recently got into UL connected SE pentodes, and like the sound very much. I also like working with pentode drivers.

 

[pilovis]

This is the final version with preamplifier (6SN7) and tone control:
All tubes, no semiconductors.

An externally hosted image should be here but it was not working when we last tested it.

 

[homeskillet]

Very beautiful job. That looks like a lot of fun. I like the speaker/amp combo very much. What speaker (driver) did you use and did you port the box or is it sealed etc? -Fred