SPCEIFICATINONS   
Nomin diameter :           203mm. 8in
Nomin al impe dance:    8 ohm
Power rating:                120W RMS                                   
Sensitivity (1w/1m) :     95dB±3dB
Frequency range:          88-4.5KHz
Voice Coil diameter :      φ49.5mm
Voice coil length:           12mm
Air gap height:               8mm
magnet dimension :       φ140mm*20mm

THIELE & SMALL PARAMETERS
Resonace frequency,FS:                88Hz
D.C.Resistan ce,Re:                       6.0 ohm
Mechanical quality factor,Qms:      3.13
Electrical quality factor,Qes:          0.54
Total quality factor,Qts:                 0.46
Equivalent air volme to Cms,Vas:  9.5L
Mechanical compliance,Cms:          0.13mm/N
Bl factor,Bl:                                    11.91N/A
Effective surface area,Sd：            0.02㎡

MATERIALS
Basket:                     Steel
Cone and dust can : Paper
Surround:                 Treated cloth
Voice coil wire:         Copper
Voice coil bobbin:      kapton
Magnet:                    Ferrite 

MOUNTING INFORMATION
Overall diameter:         φ210mm
Bolt circle diameter:     φ198mm
Baffle cutout diameter:φ186mm
Depth:                         101mm
Net weight:                 3.3kg