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RCF CX 10 N 251

RCF CX 10 N 251

The CX10N251 is a lightweight coaxial driver with excellent linearity and high efficiency. The CX10N251 radiates a coherent single spherical wave front with perfect dispersion control. The design is powered from a large sized single neodymium ring magnet that provides an extremely high flux density and BL factor. The new hyper-vented aluminium basket and magnetic assembly design provide an excellent heat dissipation and lower power compression. Special air-forced ventilations are provided for voice coil, magnet assembly and basket. A 2,5” voice coil combined a strength fibreglass former and aluminium wire drives the mid-bass cone with high efficiency and a good extension. The 1,7” dome compression driver, loaded to a 60° conical waveguide, provides a clear vocal output and a perfect high frequency extension.


More Information

  • 600 Watt continuous program power handling Mid-Bass
  • 2.5-inch , fibreglass outside, aluminum voice coil
  • 99 dB Sensitivity
  • 65 Hz - 3.5 kHz Frequency range
  • Dual-forced air ventilation for minimum power compression
  • M -roll surround and exponential cone geometry
  • Demodulation ring
  • 100 Watt Continuous program power handling HF
  • 1.75-inch Diaphragm, 1.0-inch Exit Throat
  • Frequency range: 1200Hz – 20kHz

Technical Specification

CX10N251 HF Driver:
  • Nominal Diameter:25.4 / 1.0 mm/inch
  • Rated Impedance:8 Ohms
  • Program Power:100 W
  • Power Handling Capacity:50 W
  • Sensitivity 1 W, 1 m:109 dB
  • Frequency Range:1200 - 20000 Hz
  • Minimun Impedance:6.5 Ohms
  • Voice Coil Diameter:44.4 / 1.75 mm/inch
  • Voice Coil Material:Edgewound Aluminium
  • Number of layers:1 - Outside
  • Diaphragm Material:Polyimide
  • Diaphragm Design:Dome
  • Suspension Material:Polyimide
  • Suspension design:Flat
  • BL factor:7.5 Tm
  • Flux density:1.9 T
  • Phase plug design:2 slot
  • Phase plug material:Composite
  • Magnetics:Neodymium

CX10N251 Horn:

  • Throat Diameter:25.4 / 1.0
  • Nominal coverage (-6dB):60 degrees
  • Cut-off Frequency:1800
  • Material:Structural Polyurethane

CX10N251 LF Driver:

  • Nominal Diameter:250 / 10 mm/inch
  • Rated Impedance:8 Ohms
  • Program Power:600 W
  • Power Handling Capacity:300 W
  • Sensitivity:99 dB
  • Frequency Range:65 - 3500 Hz
  • Effective Piston Diameter:210 / 10 mm/inch
  • Max Excursion Before Damage (peak to peak):30 / 1.18 mm/inch
  • Minimum Impedance:6.4 Ohms
  • Voice Coil Diameter:64 / 2.52 mm/inch
  • Voice Coil Material:Aluminium
  • Voice Coil Winding Depth:14 / 0.55 mm/inch
  • Number of layers:1
  • Kind of layer:inside / outside
  • Top Plate Thickness:8 / 0.31 mm/inch
  • Cone Material:No pressed pulp
  • Cone Design:Curved
  • Surround Material:Polycotton
  • Surround Design:Triple - roll

Thiele-Small Parameters:

  • Resonance frequency:Fs - 72 Hz
  • DC resistance:Re - 5.2 Ohms
  • Mechanical Factor:Qms - 4.52
  • Electrical Factor:Qes - 0.25
  • Total Factor:Qts - 0.23
  • BL Factor:Bl - 17.5 Tm
  • Effective Moving Mass:Mms - 28 g
  • Equivalent Cas air load:Vas - 25 liters
  • Effective piston area:Sd - 0.035 sq m
  • Max. linear excursion ( mathematical):Xmax - 4.8 mm
  • Voice - coil inductance @ 1 kHz:Le1K - 1.2 mH
  • Half-space efficiency:Eff - 4.7%

MOUNTING INFORMATION:

  • Overall Diameter:260 / 10.24 mm/inch
  • Bolt Circle Diameter:241-246 / 9.5-9.6mm/inch
  • Bolt Hole Diameter:5.5 / 0.22 mm/inch
  • Front Mount Baffle Cut-out:234 / 9.21 mm/inch
  • Rear Mount Baffle Cut-out:234 / 9.21 mm/inch
  • Depth:126 / 4.96 mm/inch
  • Volume occupied by the driver:2.1 / 0.07 liters/cu ft
  • Net Weight:3.1 / 6.83 kg/lbs
  • Shipping Weight:3.3 / 7.28 kg/lbs
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