Apparently you people didn't read the initial post - WORLD REFERENCE!!! Doesn't that mean anything anymore? Why elaborate beyond that, it speaks for itself and is above questioning. Therefore, no questions please! Show a little respect.
Seriously, please don't encourage him.
Or . . . from the DCM website:
This tower contains a 6 1/2 Kevlar midrange coupled with a 30mm teteron tweeter to provide you with an excellent acoustic experience.
Two glass fiber cones located below the midrange and tweeter on the 45-inch tall speakers provide high damping capabilities for accuracy beyond belief!
A perforated radiused steel grille encloses the cabinet internally being braced by a 1" thick MDF front baffle that reduces unwanted vibration and standing waves. The performance of the TFE 200 is enhanced by the 5" x 1-3/8" port which responds to low frequency rather than port turbulence.
So, it's a ported box at $499/speaker which performance became world class once same speaker became open baffle. Right.