96 dB Sensitivity 1 W / 1 m 1.100 W Power Handling 4″ Copper Sandwich Voice Coil for low Power Compression Neodymium Magnet System Double treated Cone for Water Protection Triple Aluminum demodulating Rings for ultra low Distortion Optimal for high Output Suwoofers
Nominal Diameter 18“, 460 mm
Overall Diameter 18.11“, 460 mm
Bolt Circle Diameter 17.32“, 440 mm
Baffle Cutout Diameter 16.61“, 422 mm
Depth 7.65“, 194.3 mm
Flange and Gasket Thickness 0.55“, 13.9 mm
Electrical Specifications
Minimum Impedance 6.3 Ohm
Nominal Impedance 8 Ohm
Nominal Power Handling*** 1200 W
Maximum Power Handling**** 2400 W
Sensitivity (1W/1m) 98 dB
Frequency Range 35 - 1600 Hz
Voice Coil Diameter 4“, 100 mm
Winding Material Kupfer
Former Material Glass Fiber
Winding Depth 1.14“, 28.9 mm
Magnetic Gap Depth 0.47“, 12 mm
Flux Density 1.22 T
THIELE & SMALL Parameters
Resonant Frequency (fs) 35 Hz
DC Resistance (Re) 5 Ohm
BL Product (BL) 24.8 N/A
Diaphragm Mass inc. Airload (Mms) 211.8 grams
Mechanical Compliance of Suspension (Cms) 0.098 mm/N
Rms 4.19 Kg/s
Electromagnetic Q (Qes) 0.38
Mechanical Q (Qms) 11.1
Total Q (Qts) 0.37
Compliance Equivalent Volume (Vas) 6.74 ft³, 190.8 dm³
Surface Area of Cone (Sd) 181.97“², 1174 cm²
Maximum Linear Excursion (Xmax)* 12.45 mm
Xdamage** 21 mm
Coil Inductance (Le) 1.26 mH
Diaphragm mass (Mmd) 189.1 g
Eta Zero 2.1 %
Notes
*Xmax = [(winding depth - magnetic gap depth) / 2] + (magnetic gap depth / 3)
**Maximum excursion before permanent damage
***2 Hours Test According to AES 2-1984 Rev. 2003
****Maximum power is defined as 3dB greater than nominal power
95 dB Sensitivity 1 W / 1 m
1.200 W Power Handling
4" Copper Sandwich Voice Coil for low Power Compression
Neodymium Magnet System
Double treated Cone for Water Protection
Triple Aluminum demodulating Rings for ultra low Distortion
Optimal for high Output Subwoofers
Leight Weight Carbon Fiber Diaphragm
1200 W continuous program power capacity
76 mm (3 in) copper voice coil
40 - 2000 Hz response
99 dB sensitivity
Double silicone spider with optimized compliance
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