Nothing special to note about the sound or response of this speaker, but, for those times when you need a closed-back speaker, it?s a good choice. 
 
I?ve used a few of these, and, because of its closed-back design, they have been a life-saver when I?ve needed to mount a working speaker in unconventional or ill-designed cabinets (or for those situation when there was no cabinet whatsoever). 
 
Need a reasonably speaker mounted in a plaster sculpture? Need to just prototype a DIY project quickly without a cabinet at hand? No problem ;-) 
 
For those odd-ball situation, the Eminence Alpha-8MRA is hard to beat.