Vaccum tube Equalizer schematic?

[EL504]

Old thread but on topic.

This BBC AM1/11 equalizer looks a lot like the Blonder Tongue Audio Baton.

[kissabout2002]

Thank you EL504 looks very interesting project, all the best.....

[PRR]

> This BBC AM1/11 equalizer looks a lot like the Blonder Tongue Audio Baton.

It is nearly exactly the same except for "Pro" input and output interfaces (extra tube for pro output level) and minor addition in the power supply for the added output stage.

I wonder if it really IS a Blonder but modified in the UK for Pro use? (It was also used in US "Pro" work, but the BBC paper shows 8D3 output valve, which is not how we number that type.)