The pressure treated double stitched foam surround along with the dual poly cotton spider helps keep the piston motion of the subwoofer linear and distortion free.
Vented aluminum former holds a 1.5" voice coil while allowing the heat to be exchanged. (Less heat means less distortion)
Specialized MB Quart dual poly cotton spider with double centering allows the woofer to handle more power with minimum distortions.
Heavy duty aluminum die-cast basket allows back venting, which exchanges heat with cool air, resulting in more power handling and increased reliability.
Vented high energy motor assembly with heavy duty magnets increases power handling and increases SPL.