TRF SW1520M D2 subwoofer 38 cm da bassone

MODEL: TRF SW1520M D2 Size: 15nch RMS Power: 2000wrms MAX Watt: 4000wmax Cone: Paper many layers Dust cap : Plastic Surround material: Foam BIG Voice coil bobbin: Aluminium Voice coil dimension : 3.0inch Voice coil layer: 8layer Nominal impedance:D2 Voice coil wire: Copper Spider dimension : 3”ID / 10”OD Spider material : NOMEX Spider layers :2pcs x 2layers Basket:TRF Die cast Aluminium Basket color:Red Sensitivity: 94 dB Frequency range:25-100Hz Fs: 25 Hz Mechanical Q factor(Qms):3.3 Electrical Q factor(Qes):0.6 Total Q factor:(Qts):0.5 Xmax: 28mm Force factor: 22.1N/A Magnet Weight: -300Oz Basket:Die cast Alumium Magnet:Ferrite ”high performance magnet” Magnet dimension:Φ200*25 mm 3PCS 1=Outer Dimension: 390mm 2=Mounting Depth: 265mm 3=Magnet Dimension: 200mm 4=Mounting Hole Total weight :22kg