The front of the studio, showing the left/right dual transmission line, and the center transmission line.
The upper of the 10 inch drivers in the bass lines, carry the bass, and error correction with a feed forward active system to correct the tenor register for great fidelity in reproducing the human voice, bass strings and woodwinds. The center line uses coaxial drivers, only the lower driver has the tweeter connected. The upper driver augments the bass and is fed the active feed forward error correcting signal. The lower 10 inch drivers augment the bass below 100 Hz.