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Woofer polypropylene 3 "20Watt R.M.S. - 40Watt MAX.
Impedance: 4 ohm
Power: 20 watt
Max Power: 40 watt
Frequency response: 90-18000Hz
Sensitivity @1w,1m: 92dB+-2dB
Weight: 0.20 kg
Overall diameter: 65,5mm (3'')
Total depth: 36mm
Mounting hole diameter (mm): 74mm
Speaker diameter hole: 61m
Magnet diameter: 52mm X 8mm