Often the high cost of modifying speakers...not to mention the uncertain outcome...is best applied to simply upgrading to an entirely new speaker...which exhibit some of the attributes one was looking to modify in their original speakers...
Is it taboo to mod a speaker?
I often read and hear about modifications done to source equipment, amplifiers, DACS, and ocassionally I read about someone doing stuff to the crossover portion of a loudspeaker. I myself plan to have someone modify my Pioneer DVD in a few months. However, I rarely read about anyone modding a loudspeaker by exchanging drivers. I have never heard of anyone exchange or upgrading to driver ABC from drive XYZ. Is it done? Does anyone do this professionally?