Model:   T20-04C

                            VC:   0.75inch/20.4 mm    

                            Rated Impedance:   4 ohm    

                            Frequency range:  1800-2000HZ  

                            Dome: Silk                                       

                            Magnets:   ND-Fe-B

                                  Power:   25W-RMS  connect with crossover/capacitor

                     --AL housing with silver / black color

                     --Rubber bottom plate

                      --Outer diameter 45 mm