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floobydust wrote:

As you pointed out, if the input circuitry and driver operating points are fixed, your only options are to lose it via coupling or the output stage. Maybe split them, i.e. use a 1:0.5 ratio on the inter-stage transformer and you could lose 6dB there. The rest you could lose at the output stage by using a L-pad to dial-in your preferred matching level and then replace it a couple fixed resistors.

Yep, the attenuation via L-pad and then with fixed resistors is fine but I do not feel that it is strategically kosher way to do the things.  Let pretend that I need to kill 9dB. I can do it after a transformer but it also would mean that I will send 9dB more voltage to grid of the output tube driving it closer to A2. If I have 1V at input then 30 times gain in the driver stage makes the AC remarkably close to the grid voltage at the output stage. So, I do not know it is it a good idea to approach the grid currents and then burn gain in the speakers. I will do the speaker attenuation to find out how much gain I need to burn (I anticipate that it will be 10-12dB) and then will see not can I lose 12dB in coupling. Sucks, too much complexity for suck a simple circuit. Sucks, too much complexity for suck a simple circuit.

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