SB AUDIENCE NERO-21SW1100D, 540mm Paper Cone Pro Subwoofer 8 OHM Features
Proprietary paper cone with silk cotton tree
Double spider high stability suspension
Cooling device on yoke for improved heat transfer
5" voice coil with APC (Advanced Polymer Coating)
Shorting ring in motor system for reduced distortion
Cast aluminium chassis
minimum damping fibre glass voice coil former