General Specifications

Nominal diameter                                                 457mm/18in

Power rating                                                          700Wrms

Nominal impedance                                                 8Ω

Sensitivity                                                                94dB

Frequency range                                                      30-2500Hz

Voice coil diameter                                                  75mm/3in

Chassis type                                                             Cast Aluminium

Magnet type                                                            Ferrite

Coil material                                                           Round Copper

Former material                                                      Glass Fibre

Cone material                                                          Glass-Reinforced Paper

Surround material                                                    Cloth-sealed

Suspension                                                               Single

Xmax3                                                                     5mm/0.79in

Gap depth                                                                8mm/0.31in

Voice coil winding width                                        18mm/0.71in

Small Signal Parameters

D                                                                            0.38m/14.96in

Fs                                                                           40.5Hz

Mms                                                                       167.47g/5.91oz

Mmd                                                                       145.86g/5.15oz

Qms                                                                        4.367

Qes                                                                         0.371

Qts                                                                          0.343

Re                                                                           5.27Ω

Vas                                                                          167.92lt/5.93ft3

BI                                                                            24.6Tm

Cms                                                                         0.092mm/N

Rms                                                                         9.33kg/s

Le (at 1kHz)                                                            3.24mH

Mounting Information

Diameter                                                                 460mm/18.11in

Overall depth                                                            211.3mm/8.31in

Cut-out diameter                                                       414mm/16.29in

Mounting slot dimensions                                         9.25x7mm/0.36x0.28in

Number of mounting slots                                        8

Mounting slot PCD                                                 432-441mm/17.0-17.36in