The D.D.L. (Denon Double Layer) cone has been used for the woofer diaphragm.
This dual-layer diaphragm whose structure is the result ofmeticulous
simulations is both highly rigid and light-weight and achieves a precision piston motion across the entire sonic spectrum. The ingenious structural design ensures that sympathetic vibration from the edge do not adversely affect the audio characteristics but deliver the best possible quality in sound.