No. Trevor built them before he was Dr. Wavefront. They are a simple recipe of insulation bordered by a pine frame and lovingly wrapped with burlap-like cloth.

In other news, the three-dimensional, growling, aetherial and articulate bass in my main room is something to behold. I've come to realize the Yammie and Sony subs just can't complement the sublime sound of my M2OW in the living room. I've been spying that B-stock aged walnut espresso 500. Two of those would surely remedy my ills. Alas, there is only one.

House of the Rising Sone
Out in the mid or far field
Dedicated mid-woofers are over-rated