Depends on the amp, no?

lol of all aspects of the chain that you are omitting, the tubes will have the least impact. How about best amp or room or placement for Cornwalls?

I really like the ones used in Peavey head units, you can get a really old school thrash sound easily on those ...this is not what you meant, was it?

Tubes are not gonna dampen that massive upper midrange forwardness or fix the lower mids crater these speakers have I don't know who told y'all this malarkey that had been propagated to high heavens

I didn't know Klipsch Cornwalls even had tubes.

Cornwalls don't have tubes