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
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.
Last edited:
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.
Last edited:
Nice work. I recently got into UL connected SE pentodes, and like the sound very much. I also like working with pentode drivers.
This is the final version with preamplifier (6SN7) and tone control: 🙂
All tubes, no semiconductors.
All tubes, no semiconductors.
An externally hosted image should be here but it was not working when we last tested it.
Last edited:
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
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