This ambitious design also employs all of our signature engineering innovations—rear mounted drivers coupled to an aircraft-grade 6061-T aluminum baffle, a 17-ply vertically stacked Baltic Birch cabinet, and our tension-coupling mechanism, which uses unique aluminum rods and fasteners to create a hermetically sealed, acoustically inert platform. When combined with our proprietary tweeter and Elliptical Symmetry Crossover (ESXO®), the end result is a truly magnificent loudspeaker, one that represents our unyielding commitment to designing and producing the most advanced loudspeaker systems in the world.