tube watts vs transistor watts?

...some manufactures recommend power needs assuming that the 8 Ohm rated power of the amplifier will "double down" into the lower impedance that their speakers actually work in. That might require more (8 Ohm) tube Watts than ss Watts.
Unsound (System | Threads | Answers | This Thread)

IMO, if a speaker requires an amp that doubles power as impedance is halved (meaning the speaker's low impedance spec is appreciably lower that the speaker's nominal rating), then that particular speaker should not be matched with a tube amp.

For optimal results, match tube amps, regardless of their topology, to speakers with flat impedance curves, e.g an 8 ohm nominal speaker with a low impedance spec preferably of not less than 6 ohms.

Depends if you're north or south of the equator.

Tvad, it's possible for a given speaker to have both a low nominal and minimum impedance.

xti16 - as to your reference to power calculations, it makes no difference which form of the equation you use, they are synonomous. To state otherwise ignores ohms law.

09-23-10: Unsound
Tvad, it's possible for a given speaker to have both a low nominal and minimum impedance.

Isn't that the same thing as a flat impedance curve?

If that's not your meaning, then please provide an example of a low nominal impedance and a low minimum impedance so I understand your statement more clearly.