I see output transformers with 4-8-16 ohm taps. But I wondered what range of impedances will these different output impedance transformers actually drive with good power output? Specifically, to begin, how would the 8 ohm output transformer on my NS-30 or NS-10 do with a pair of 16 ohm impedance speakers with a 10.2 ohm minimum impedance?
I have two pair of 5.25" Vifa BC14SG49-08 which have a nominal 8 ohm impedance and a 5.6 ohm minimum impedance. I would like to use these drivers for a MTM paired with my favorite Vifa D27TG45-06 tweeter. Paralleling these would give a 2.8 minimum which I know my 8 ohm taps don't like. But wiring them in series would give the 16/10.2 ohm figure.
Now compound this with the tweeter being a 6 ohm nominal impedance with a 4.7 ohm minimum .... as noboby seems to make a good high impedance soft dome anymore. How would the 8 ohm output transformers handle all this ???