4507ND Specification

Throat diameter: Rectangular 6.5" x 3/4" (162.5 x 19 mm)
Nominal impendance: 8 or 16 Ohm
Power capacity:  
Middle Range (AES): 150 W AES above 400 Hz
Peak: 1000 W peak above 500 Hz
High Range (AES): 80 W
Peak: 320 W
Sensitivity 1 W / 1 m: 112 dB on 90°x10° waveguide
Frequency Range: 400 - 22000 Hz
Recommended Crossover Mid: 400 Hz
High: 6.3 kHz
Middle Frequency Range: 400 - 7000 Hz
High Frequency Range: 6000 - 22000 Hz
Middle / High Crossover: 6300 Hz
Voice Coil Mid-Range: 3.5" (90 mm)
Voice coild high range: 1.75" (44.4 mm)
Magnet Material: Neodymium
Flux Density Mid-Range (Tesla): 1.95
Flux Density High-Range (Tesla): 2.2
Efficiency: 35 % (300 - 5000 Hz)
Voice Coil Material: Copper Clad Aluminum
  (2 Layers in- and outside of the VC)
Voice Coil Former: Kapton TM
Diaphragm Material: Polyester
 
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