The tweeter is speically used to reproducing bird sounds at outdoor, which consist of three parts: one short dome, one horn and two drivers. Model: TD-BT-04 tweeterMagnet : 60*29*5 (neodymium)Dome: Treated clothNominal diameter: 172mm. 6.8 in.Rated impedance: 8 ohmMinimum impedance:6.2 ohmVoice coil diameter: 25.4mm. 1 inSensitivity: 110±2 dB 2.83v @ 1mFrequency range: 800 -20K HzPower capacity: 20W AESProgram power: 60 WMaterial of horn: glass fiber nylonPacking information:one set in a white box8pcs in a cartonNet weight: 10.2kgGross weight: 11.5kgDimension: 39*38*34cmWe also have the matched amplifiers. If you are interested in the tweeter, and not the member of GCC, please feel free to contact us.