SPCEIFICATINONS   
Nomin diameter :           254mm. 10in
Nomin al impe dance:    8 ohm
Power rating:                250W RM S                                   
Sensitivity (1w/1m) :     98dB±3dB
Frequency range:          54-3kHz
Voice Coil diameter :      φ65.5mm
Voice coil length:           16mm
Air gap height:               10mm
 

THIELE & SMALL PARAMETERS
Resonace frequency,FS:                54Hz
D.C.Resistan ce,Re:                       6 ohm
Mechanical quality factor,Qms:      6.06
Electrical quality factor,Qes:          0.18
Total quality factor,Qts:                 0.16
Equivalent air volme to Cms,Vas:  28L
Mechanical compliance,Cms:          0.21mm/N
Bl factor,Bl:                                    26.35N/A
Effective surface area,Sd：            0.035㎡

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:         φ261mm
Bolt circle diameter:     φ245mm
Baffle cutout diameter:φ231mm
Depth:                         135mm
Net weight:                 3.5kg