18" MID-WOOFER
Black-coated steel basket
130Oz Ferrite magnet
Cloth edge and non-pressed paper+kevlar cone
High-temp polyimide film voice coil                     
Nominal diameter:18" (46cm)
Power rating: 600 watts
Sensitivity: 93 dB
Frequency response:20-2000Hz
Voice coil diameter: 4"(99.8mm) ,BASV winding
Thiele-small parameters:
Resonance frequency: FS 33 Hz