The 1.75" PKX dome NDX495 is a compression driver for professional applications where high-quality sound and long-term reliability are required. The ultra-compact size and the low recommended crossover point from 1000 Hz make this transducer ideal for two-way cabinet designs and three-way loudspeaker systems. PKX (modified polyether ether ketone) is a rigid yet lightweight material, optimized with reinforcing ribs, offering remarkable precision and reliability compared with other polymeric materials. The voice coil utilizes ultralight edge wound aluminum wire, class-leading neodymium magnets, a 4-slot phase plug, and a copper ring design to deliver exceptional power handling, sensitivity, and low distortion across its operating bandwidth. The driver specifies 140 Watts of continuous power handling, with a sensitivity of of 109 dB.
FeaturesRCF NDX495
RCF NDX495
Overview1.75-inch PKX dome, polyimide surround Kapton former, edge wound aluminum voice coil 140W continuous program power handling @ 8O Frequency range: 500Hz - 20kHz 4-slot optimized geometry phase plug Copper inductance ring for extended response High-flux density neodymium magnet Recommended for 2-way speaker design Specifications
General specifications
Exit Throat Diameter : 1.0 inch / 25 mm
Related Impedance : 8 ohm
Program Power (watt) : 140 W
Power handling capacity : 70 W
Sensitivity : 109 dB
Frequency range : 1200 - 20000 Hz
Diaphragm Material : PKX Polymer
Suspension Material : PKX Polymer
Suspension Design : Flat
Minimum Impedance (ohm) : 6.50 ohm
Voice Coil Diameter : 1.75 inch / 44 mm
Voice Coil Winding Material : Edgewound Aluminum
Voice Coil Former Design : Straight - Kapton
Number of layers : 1
Kind of layers : outside
Flux Density : 1.8 T
Phase Plug Design : 3 slot
Phase Plug Material : PP Composite
Magnetics : Neodymium
Thiele - small parameters
Bl factor (Bl) (T x m) : 7.50 T x m
Mounting information
Overall diameter : 85 mm / 3.35 inches
Overall height : 44 mm / 1.73 inches
Mounting : 4 x 6 mm threaded holes at 90°
Standard compliance
Safety agency : CE compliant
Size / Weight
Weight : 0.85 kg / 1.87 lbs
Shipping information
Package Height : 65 mm / 2.56 inches
Package Width : 111 mm / 4.37 inches
Package Depth : 113 mm / 4.45 inches
Package Weight : 0.89 kg / 1.96 lbs
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