8 Vs 4 ohms

Thanks, I will check it out.

The 8 ohm tap will output more volts but less peak current.
Power = Volts x Current
= Volts x Volts / ohms
= Current x Current x ohms

Cford, The voltage at the 8 ohm tap is the same as at the 4 ohm tap, but the transfer of power to the speaker will be lower depending on the speaker inpedence. You are confusing the power consumption of the speaker depending on its impedence. The speaker at 4 ohms will consume twice the power of the 8 ohm speaker for the SAME voltage, if attached to the 4 ohm tap.
Tube outputs use transformers to match the voltage and impedence to the speaker requirements. Attaching a 4ohm speaker to the 8 ohm taps usually results in reduced power transfer and reduced damping, thus 'losser' bass. The opposite, results in stiffer bass, again with reduced power transfer. I find, that when in doubt, put the higher impedence speaker to the lower tap.
Bob P.

Cford & Bob P. , you are both right depending on how you look at the issue. At a given sound level the nominal voltage output to the speaker is the same but you may run out of juice on loud transients & deep bass at 8 ohms. At a given level of the volume dial, the 8 ohm tap gives you a higher nominal voltage output. FWIW.

Djk: I have a Cronus at 55WPC and found that the 4 Ohm setting sounded better with my Vandersteen 2Ces, which are above 4 Ohms nominally but still have a minimum impedance dip to 4 Ohms. The bass is better and there is a better dynamic punch. Do you know what the minimum impedance is for your speakers? If it is less than 4 Ohms and it probably is, then I would go with those taps.