Product informationhome>>J6521nd


    • Features
    • 1. 3600 W continuous program power capacity

      2. 98dB Sensitivity 1w/1m

      3. 34Hz~1000Hz frequency response range

      4. 6" inside/outside voice coil for improved power-hangdling

      5. Forced air ventilation on U-yoke for minimum power compressoin

      6. Optimized winding length for extended Xmax

      7. Double spider for improved excursion control and linearithy

      8. Ideal for compact horn-loaded subwoofer application

General Specifications
Nominal Diameter 530/21 mm/inch
Rated Impedance 8 ohm
Nominal Power handling1 1800 Watts
Program Power2 3600 Watts
Sensitivity(lw/lm)3 98 dB
Frequency Range4 34~1000 Hz
Minimum Impedance(Zmin) 7.9 ohm
Voice Coil Diameter 150/6 mm/inch
Voice Coil Material Copper
Former Material Glass Fiber
Voice Coil Winding Depth 35 mm
Number of layers 2 (inside/outside)
Magnet gap depth 14 mm
Basket Cast Aluminum
Flux Density 1.2 T
Magnet Material Neodymium
Thiele-Small parameters
Resonance frequency Hz
DC resistance Re 6.2 ohm
Mechanical factor Qms 12.6
Electrical factor Qes 0.35
Total factor Qts 0.34
Mechanical compliance Cms 0.047 m/N
Mechanical resistance
of suspension losses
Rms 7.8 mech-ohm
Effective Moving Mass Mms 461 g
Half-space efficiency Eff 1.99 %
BL Factor BL 41.6 T.m
Equivalent Cas air load Vas 186 liters
Effective piston area Sd 0.1676
Max.linear excursion5 Xmax 13 mm
Voice coilinductance LelK 2.7 mH
Efficiency Bandwidth Product EBP 97
Mounting Information
Overall Diameter 556 mm
Bolt Circle Diameter 528 mm
Bolt Hole Diameter 6.5 mm
Baffle Cutout Diameter 493 mm
Overall Depth 250 mm
Net Weight 20.8 kg
Shipping Weight 23 kg
Shipping Box 585x585x270 mm