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General  Specification SD15 SD18
Norminal Diameter : 394mm/15inch 476mm/18inch
Power Rating : 600W 1000W
Norminal Impedance : 8Ohm 8Ohm
Sensitivity : 97dB 97dB
Frequency Range : 40Hz-3.5kHz 36Hz-2kHz
Chassis Type: Aluminium Aluminium
Magnet Type: Ferrite Magnet Ferrite Magnet
Magnet Weight : 220x110x25mm/125OZ 220x110x25mm/125OZ
Voice Coil ; 4"/99.2mm 4"/99.2mm
Coil Material SV,Inside-out SV, Inside -out
Former Material : Glass Fiber Glass Fiber
Voicecoil Winding Width: 21mm 25mm
Cone/Surround Material : Paper/Cloth Paper/Cloth
Suspension : Double Spider Double Spider
X-mas: ±6.0mm ±6.0mm
N/G  Weight 12/13 kg 13/14 kg
Dimension WxDxH 44x44x25cm 51x51x27cm
Thiele & Small Parameters
Re 5.3Ohm 5.3Ohm
Fs 41Hz 36Hz
Mms 150g 177g
Mmd 147 152
Qms 7.5 7.6
Qes 0.31 0.48
Qts 0.29 0.44
Vas 160 lt 214 lt
BL 24.8 Tm 21.5 Tm
SD 0.091 m2 0.133m2
Features
1200 Watts  Max Power Handling 2000 Watts  Max Power Handling
Ferrite Magnet Ferrite Magnet
Double Spider Suspension Double Spider Suspension
Die Cast Aluminium Chassis Die Cast Aluminium Chassis

 
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