SUB 1

Hexagonal cabinet with multiple high-excursion drivers radially aligned in a Vibration-Canceling Design Architecture, patented built-in Ultra-Class-D™ power amplifier, sealed enclosure, PBK interface, removable grille

SUB 2

Hexagonal cabinet with multiple high-excursion drivers radially aligned in a Vibration-Canceling Design Architecture, patented built-in Ultra-Class-D™ power amplifier with Power Factor Correction, sealed enclosure, PBK interface

SUB 25

Single high-excursion driver, sealed enclosure, patented built-in Ultra-Class-D™ power isolation amplifier with Power Factor Correction, USB port