Audiphile1...I got your email, and you've got a response back!
Drubin...These speakers use a round ribbon tweeter and a pair of ceramic-coated fabric cone woofers with a custom "short-voice-coil/long-magnetic-gap" voice coil design. Asides from saying "they sounded excellent, with a very silky-smooth and warm character being driven by a pair of Class-D amps", not sure how else to answer your question... :-)