![[-]](https://theultimatetone.com/images/collapse.png "[-]")
06-12-2023, 12:00 AM
Hi Guys
The output tube wiring looks like 7591.
1. nc
2.h1
3.a
4.g2 optional
5.k,g3
6.g1
7.h2
8.g2
RCA made both tubes and finished products. For the latter, they often used variations of standard tubes with odd pinouts so there would be a captive market for some of their tube range. It is likely the driver tube is also one of these non-standard pinout tubes.
The output tube wiring looks like 7591.
1. nc
2.h1
3.a
4.g2 optional
5.k,g3
6.g1
7.h2
8.g2
RCA made both tubes and finished products. For the latter, they often used variations of standard tubes with odd pinouts so there would be a captive market for some of their tube range. It is likely the driver tube is also one of these non-standard pinout tubes.
