SPCEIFICATINONS   
Nomin diameter :           380mm. 15in
Nomin al impe dance:    8 ohm
Power rating:                300W RM S                                   
Sensitivity (1w/1m) :     99dB±3dB
Frequency range:          52-3.5kHz
Voice Coil diameter :      φ99mm
Voice coil length:           18mm
Air gap height:               10mm

THIELE & SMALL PARAMETERS
Resonace frequency,FS:                52Hz
D.C.Resistan ce,Re:                       6 ohm
Mechanical quality factor,Qms:      10.4
Electrical quality factor,Qes:          0.34
Total quality factor,Qts:                 0.33
Equivalent air volme to Cms,Vas:  124L
Mechanical compliance,Cms:          0.08mm/N
Bl factor,Bl:                                    21.3N/A
Effective surface area,Sd：            0.0885㎡

MATERIALS
Basket:                     Aluminium
Cone and dust can : Paper
Surround:                 Treated cloth
Voice coil wire:         Copper
Voice coil bobbin:      Glass Fibre
Magnet:                    NdFeB  

MOUNTING INFORMATION
Overall diameter:         φ392mm
Bolt circle diameter:     φ375mm
Baffle cutout diameter:φ356mm
Depth:                         168mm
Net weight:                 7kg