Cabinets are manufactured from MDF and feature a unique tapered lossy line design.

Panels within the enclosure act to form a tapered lossy line in order to kill the back energy from the drivers which can, if reflected, muddy the sound.

A short length of low loss coaxial line is acceptable, but with longer lossy lines the additional loss due to SWR becomes very high.

For a lossy line the expression is only valid adjacent to the termination; VSWR asymptotically approaches unity with distance from the termination or discontinuity.