Effectiveness reasons.
The SK12 unit uses a rare reinforced carbon fiber braided cone diaphragm, and applies many of Hivi's patented technologies. It has a newly designed fatigue-resistant long-stroke rubber ring that is soft and elastic, and a highly compliant centering support. The disc has excellent damping characteristics and dynamic stability.
The high-temperature-resistant high-power frame can withstand high-power input and the SV voice coil can fully protect the unit. The audiophile-grade long-stroke high-power low-frequency linear displacement design can improve the large dynamic low-frequency output capability of the woofer while reducing distortion. Optimized Thiele/Small parameter design allows the bass unit to work perfectly with the speaker.