Yeah, you're right. Without stating the conditions of the test, knowing the harmonic distortion doesn't mean much.I've always preferred woofers and midwoofers with flux stabilization, so I've asked Eminence to put their minds on making a low distortion subwoofer. Check out the thread at www.AudioRoundTable.com/ProSpeakers/messages/21.html. It links to some other threads on the same subject and I'm interested to see how this project goes.