Thank you for posting that link. I'll also add that the 25 ohm/20 watt snubbing resistors on my Zu Omen DW's never get any warmer than room temperature. This regardless of how long I listen. Amp is a P-P 60 watter. (KT88 based)
That just means you aren't putting out much power under normal circumstances. Use your "60 watt" amplifier at full output and your resistor will be nearly glowing red hot, and will be getting far too hot to touch long before that. Maybe 40% of your power is going into the resistor and coming out as heat - electricity isn't magic.
But the parameters indicated, at *best*, turn your 60 watt amplfier into about a 40 watt amplifier - which is why you might think you want a bigger amplifier. Of course, since this resistor is probably wirewound, you have also added another reactive element in parallel with your reactive speaker, making the load more complex that it was, and more prone to varying with frequency, unless it just magically happens to work out. I say "magically" because you probably have no idea what sort of reactance your resistor really has nor that that particular value will compensate the reactance of the speaker. That's the same principle as a Zobel network, which is usually just a theoretical idea since you never know enough about the speaker or amp to properly design it.
If it was just a pure resistor (which it almost certainly isn't), then maybe it does even out the load slightly, but if it's 16 ohms nominal, you aren't likely to run out of current from the amp, so you are better off not shunting some if it off. 16 ohms and varying is probably easier on a properly designed amplifier than 10 ohms and varying slightly less. On a marginal design, it make make it more stable, but you would be better off with a more stable amplifier and no parasitic load. You can probably assume your AVA amp is not going to need external resistors to remain stable!
So, I am having a bit of trouble understanding what is being accomplished by putting in shunt resistors.
Brett
p.s. Look at it a different way. You might consider what it means to have a more powerful amplfier. Since they are rated into a fixed 8 ohm (resistive) load, the power rating and volume is directly proportional to the output *voltage* Putting a resistor on the output can only suppress the output voltage, because the amplifier impedance is certainly more than zero, more current, more sag. Having powerful current drive tends to reduce the source impedance, reducing the sag. Your shunt resistor can only reduce the voltage seen by the speaker, reducing the power.
