[Eliot Ness]

John
I have a P-T291 from Antique Electronic supply it's an 8 watt unit would it work? I looked at the 71A data but not sure what you look at is it load resistance? Primary impedance is 4000-10,000 ohms If not I will get the one from radio Daze.......

It wouldn't hurt to try it, but I didn't really pay attention to that spkr before, so it may be a wildcard like Mondial suggests. 

Good idea posting on the Facebook page, the more info you gain the better.