Hi dB, i feel a bit of a fraud continuing to use Waynes site to discuss NON PI speakers & since your interested in the 5" bass-mids I am using would you please consider going to the DIY AUDIO site and search the loudspeaker forum for the "my little speakers" thread and all the details ,including the specs. (provided by another user) will be revealed. If you care to register there we can carry on this discussion " legally " so to speak. Thanks for your interest.