15" professional PA woofer/loudspeaker

POF   Series    Pa    Woofer

Model  No:                                 POF 807                        POF1007                       POF1207                   POF1507
Nominal  Diameter            208mm (8 in )               254mm (10 In )            310mm (12  In )         380mm (15 In )
Nominal  Impedance              8  ohm                             8 ohm                             8  ohm                         8 ohm
Mininal  Impedance                 5  ohm                             5 ohm                            5  ohm                          5 ohm
Power  Capacity:                      250 W                              300 W                             800 W                          1000W
Sensitivity:(1W/1M)                   96dB                                97dB                               98dB                             99dB
Freq Resp:                          60Hz-6.5kHz                   40Hz-5.5kHz                30Hz-4.5kHz                20Hz-3.5kHz
Voice Coil Diameter:       50.6mm (2  In)               75.8mm ( 3  In )            75.8mm ( 3  In )          75.8mm ( 3  In )
Winding  Material:                   Copper                           Copper                             Copper                       Copper
Former  Material:                     Kapton                            Kapton                              Kapton                        Kapton
Magnet:                                       45 OZ                              78 OZ                               78 OZ                          78 OZ

LF  Unit Thiele&Small  Parameter

Fs:                                            73.5 Hz                            49.4 Hz                               41.7Hz                         36.4Hz
Qms:                                           5.8                                     6.4                                      6.5                                6.8
Mms:                                         27.5 g                              56.8g                                  68.9g                           95.9g
Qes:                                            0.31                                 0.20                                    0.21                              0.24
Vas:                                            9.8  L                               33.7L                                 84.1L                            204.8L
Qts:                                              0.3                                   0.18                                    0.19                              0.22
X-max:                                      3.1 mm                           6.2mm                                4mm                             4 mm