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RCF CX12N251, coaxial transducer 12"/1", 300W/50W @ 8/8 Ohm

Item: PAH0013559-000V000126987
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RCF CX12N251

Item in good condition

The CX12N251 is a lightweight coaxial driver with excellent linearity and high efficiency. The CX12N251 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.

Features 600 Watt continuous program power handling Mid-Bass 2.5-inch , fibreglass outside, aluminum voice coil 99.5 dB Sensitivity 50 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 2-slot, optimised geometry phase plug Polyester diaphragm Aluminum rear cover dissipation design

CX12N251 Driver Nominal Diameter: 25.4 / 1.0 mm/inch Rated Impedance: 8 Ohm 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 Ohm Voice Coil Diameter: 44.4/1.75 mm/inch Voice Coil Material: Edgewound Aluminum Number of layers: 1 - Outside Diaphragm Material: Polyimide Diaphragm Design: Dome Suspension Material: Polyimide Suspension design: Flat BL factor: 7.5 T · m Flux density: 1.9 T Phase plug design: 2 slot Phase plug material: Composite Magentics: Neodymium

CX12N251 Horn Throat Diameter: 25.4 / 1.0 Nominal coverage (-6dB): 60°° Cut-off Frequency: 1800 Material: Structural Polyurethane

CX12N251 Woofer Nominal Diameter: 300 / 12 mm/inch Rated Impedance: 8 Ohm Program Power: 600 W Power Handling Capacity: 300 W Sensitivity: 99.5 dB Frequency Range: 50 - 3500 Hz Effective Piston Diameter: 260 / 10.2 mm/inch Max Excursion Before Damage (peak to peak): 30 / 1.18 mm/inch Minimun Impedance: 6.4 Ohm Voice Coil Diameter: 64 / 2.51 mm/inch Voice Coil Material: Aluminum Voice Coil Winding Depth: 14 / 0.55 mm/inch Number of layers: 1 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 - 60 Hz DC resistance: Re - 5.2 Ohm Mechanical Factor: Qms - 5.4 Electircal Factor: Qes - 0.28 Total Factor: Qts - 0.26 BL Factor: Bl - 17.5 T · m Effective Moving Mass: Mms - 41 g Equivalent Cas air load: Vas - 62 liters Effective piston area: Sd - 0.053 m² Max. linear excursion ( mathematical): Xmax - 4.8 mm Voice - coil inductance @ 1 kHz: Le1K - 1.2 mH Half-space efficiency: Eff - 5.2%

Mounting Information Overall Diameter: 320 / 12.6 mm/inch Bolt Circle Diameter: 294.5 - 304 / 11.6 - 12 mm/inch Bolt Hole Diameter: 5.5 / 0.21 mm/inch Front Mount Baffle Cut-out: 288 / 11.34 mm/inch Rear Mount Baffle Cut-out: 288 / 11.34 mm/inch Depth: 144 / 5.67 mm/inch Volume occupied by the driver: 2.4 / 0.08 liters/ft³ Net Weight: 3.6 / 7.94 kg/lbs

Features:

  • Manufacturer: RCF
  • Size (Inches): 12
  • Power Output (Watt): 300
  • Impedance (Ohm): 8
  • Frequency Response from (Hz): 50
  • Frequency Response to (Hz): 3500
  • Sensitivity (dB): 99.5
  • Magnet: Neodymium
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