18inch PA speaker                                   
Glass fiber and paper cone with cloth surround                    
Black high gloss colour Die cast basket with paper gasket   
2-Layer CONEX material  spider  
Neodymium magnet 
4-layer 99.8mm  BACCW  voice coil    
Nominal impedance:8ohms DC Resistance:7.2ohms
F0:36.5HZ 
Rated music power:2500w
SPL:99.5db  Qms:5.82 Qes:0.32 Qts:0.3