As another option, I found an old thread from 11/14/05 titled "Is Soliloquy out of business?" Scroll down to the last two posts who in the past have claimed to have replacement parts for Soliloquy. As an owner of 6.2s I'd be interested in whatever you find. Best of luck.
Soliloquy 6.5 speaker
I found a pair of 6.5 in good condition everything seems to be fine but i have one damaged mid,any information on this,i know that these are dedicated drivers for the speaker,if someone has work with them or know a replacement for this i know it is hard to find but i know that sometimes few people modified speakers and maybe i can put it to sing,thanks for you help