Are attenuators linear or logarithmic?

Gs,

Thanks. I was just trying to estimate how much power the amps were pushing (or maybe better yet, the speakers were pulling) at certain levels of attenuation.

I recently went active with the speakers and was trying to guess at the change in speaker efficiency after removing the passive crossovers.

Kind of a backward way to go about it, I'm sure, but I am seriously electronics basics challenged.

Thanks again.
Jim S.