TRF SW1820D2

SPECIFICATION:
MODEL:TRF SW1820D2
Size: 18inch
Cone: Competition Grade paper
Surround material: Foam
Voice coil: 3.0inch
Voice coil layer: 4layer
Nominal impedance:dual 2ohm
Voice coil wire:aluminium
RMS Power: 2000wrms
MAX Watt:4000wmax
Sensitivity: 90.2dB
Resonance frequency(f0): 29.6Hz
Mechanical Q factor(Qms): 6.71
Electrical Q factor(Qes):0.64
Total Q factor:(Qts): 0.59
Xmax: 21mm
Force factor: 23.9N/A
Magnet Weight: 300Oz
Gascet:PVC
1=Outer Dimension:  468mm - 18.42"2=Mounting Depth: 280mm - 11.02"3=Magnet Dimension: 228mm - 8.98"4=Mounting Hole Dimension: 425mm - 16.73"