Wayne Parham Messages: 18723 Registered: January 2001
Illuminati (33rd Degree)
The woofer used in the Theater three π speaker has a heavier cone that's tuned lower. So it can be used in a smaller box and still provide deep extension - as long as the amplifier has pretty good damping ability. Where you'll find the biggest difference is down deep. The Thermionics will work very well on pretty much any amp while the Theater's need better damping. But provided the damping is there, the bottom octave from the Theater three π speaker is a little more powerful.