compression driver model TSCT-2502 this is a high frequency driver ,used in the stage system. products have passed Rohs ,CE compression drivermodel TSCT-2502power 50wimpedance 8 ohmvoice coil 25 KSV or Titaniumthis product widely used in stage system , high-frequency compression driver .the sound is very articularproduct has passed Rohs ,CE ,BV certificate