Skip to product information
1 of 2



The ND650 is a high frequency performance 2.5-inch diaphragm compression driver with a 1.4-inch exit throat featuring several state of the art technologies. The diaphragm is precision formed from pure titanium. The suspension is based on a vented polyester design for low distortion. Voice coil assembly is designed using high temperature kapton former.

More Information

  • 2.5-inch Diaphragm, 1.4-inch Exit Throat / Pure Titanium Compression Driver
  • 180W continuous program power handling
  • Frequency range: 700Hz - 20kHz
  • 3-slot optimized geometry phase plug
  • Titanium diaphragm
  • Copper inductance ring for extended response
  • Vented, damped, low distortion suspension system
  • Neodymium magnet assembly

Technical Specification


General Specifications
Exit Throat Diameter: 35.5 / 1.4 mm/inch
Rated Impedance: 8 Ω
Power handling capacity continuous program1: 180 W AES
Power handling capacity AES2: 90 W AES
Sensitivity: 110 dB
Frequency Range: 700 Hz ÷ 20000 Hz
Diaphragm Material: Pure titanium
Suspension Material: Polyester
Suspension Design: Flat
Minimum Impedance: (at 2.5kHz) 7.5 Ω
Voice Coil Diameter: 63.7 / 2.5 mm/inch
Voice Coil Material: Edgewound aluminium
Voice Coil Former Design: Straight kapton
Number of layers: 1 - outside
BL Factor: 10.4 T · m
Flux Density: 2 T
Phase Plug Design: 3 slots
Phase Plug Material: Aluminium
Magnetics: Neodymium
Voice Coil Demodulation: Copper ring
Mounting information
Overall diameter: 115 / 4.5 mm/inch
Overall height: 46 / 1.8 mm/inch
Mounting 4 × 5 mm holes at 90°: 101.6 / 4.0 mm/inch
Net weight: 1.8 / 3.9 kg/lbs
View full details