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ND9118s

    • Features
    • 1. 1500 W continuous program power capacity

      2. 96dB Sensitivity 1w/1m

      3. 31Hz~1000Hz frequency response range

      4. 4" inside/outside voice coil

      5. Double silicone spider with optimized compliance

      6. Neodymium magnet allows a vrey light yet powerful motor assembly

      7. Ventilated voice coil gap for reduced power compression

      8. Ideal for compact subwoofer application

General Specifications
Nominal Diameter 460/18 mm/inch
Rated Impedance 8 ohm
Nominal Power handling1 750 Watts
Program Power2 1500 Watts
Sensitivity(lw/lm)3 96 dB
Frequency Range4 31~1000 Hz
Minimum Impedance(Zmin) 6.7 ohm
Voice Coil Diameter 100/4 mm/inch
Voice Coil Material Copper
Former Material Glass Fiber
Voice Coil Winding Depth 30 mm
Number of layers 2 (inside/outside)
Magnet gap depth 14 mm
Basket Cast Aluminum
Flux Density 1.15 T
Magnet Material Neodymium
Thiele-Small parameters
Resonance frequency Hz
DC resistance Re 5.3 ohm
Mechanical factor Qms 12
Electrical factor Qes 0.58
Total factor Qts 0.55
Mechanical compliance Cms 0.08 m/N
Mechanical resistance
of suspension losses
Rms 4.6 mech-ohm
Effective Moving Mass Mms 252 g
Half-space efficiency Eff 1.2 %
BL Factor BL 22.3 T.m
Equivalent Cas air load Vas 175 liters
Effective piston area Sd 0.1219
Max.linear excursion5 Xmax 11 mm
Voice coilinductance LelK 2 mH
Efficiency Bandwidth Product EBP 58
Mounting Information
Overall Diameter 461 mm
Bolt Circle Diameter 439 mm
Bolt Hole Diameter 6.5x9.5 mm
Baffle Cutout Diameter 424 mm
Overall Depth 212 mm
Net Weight 9.6 kg
Shipping Weight 10.6 kg
Shipping Box 500x500x250 mm