Product Name: 1.4 Inch Throat Diameter Titanium Diaphragm Compression Driver (DE-880) Model NO.: DE-880 SNR: 91-100dB Function: Bluetooth, USB Structure: Closed Enclosure Sound Channel: 2.1 Adjusting Method: Keystoke Usage: Stage/DJ, Karaoke, Home Theatre System, Computer Speaker Material: metal Amplification Type: Active Normal Impedance: 8ohms Power Capacity: 85watt RMS Sensitivity: 110dB Frequency Range: 500Hz-200kHz Diaphragm Material: Titanium or Composite Flux Density: 2.2t Magnet: Neodymium Trademark: OEM Transport Package: Standard Export Carton Specification: Neodymium Origin: Ningbo China HS Code: 8518290000 Product Description DE-880Specifications:Throat Diameter: 1.4 in (36mm)Mounting Type:Bolt onNominal Impedance: 8 OhmPower Capacity: 85Watts RMSSensitivity(1W/1M): 110dBFrequency Range: 500Hz-20KHzDiaphragm Material: Titanium or Composite diaphragmVoice Coil Diameter 3 in(74mm)Voice Coil Material: ALR Pure Ribbon Aluminium WireFlux Density: 2.2TMagnet: Neodymium OD124mm