Magnet Weight:8   oz
Vioce Coil Size:1"
Diaphragm Material:CLOTH
Frequency Range:1--18  kHz
Sensitivity(1W/1M):100   dB
Power RMS/MAX:30/60  W
Impedance:   4 or 8  Ω
FITS HORNS WITH1 3/8" *18 TPI THREADS