Features
  • 600 Watt continuous program power handling Mid-Bass
  • 2.5-inch , fibreglass outside aluminum voice coil
  • 101 dB Sensitivity
  • 50 Hz - 3.0 kHz Frequency range
  • Dual-forced air ventilation for minimum power compression
  • Triple-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

The CX15N251 is a lightweight coaxial driver with excellent linearity and high efficiency. The CX15N251 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.

Part number:

11100070
CX15N251
8ohm

Specifications
General specifications
Nominal Diameter:
15 inch / 381 mm
Related Impedance:
8.00 ohm
Program Power (watt):
600 W
Power handling capacity:
300 W
Sensitivity:
101.0 dB
Frequency range:
50 - 3000 Hz
Effective piston diameter:
330 mm / 12.99 inch
Max. Excursion Before Damage:
30 mm / 1.18 inch
Minimum Impedance (ohm):
6.4 ohm
Voice Coil Diameter:
2.5 inch / 63 mm
Voice Coil Winding Material:
Aluminium
Voice Coil Length:
0.55 inch / 14 mm
Number of layers:
1
Kind of layers:
outside
Top Plate Thickness:
8 mm / 0.31 inch
Cone Design:
Curved
Surround Material:
Polycotton
Surround Design:
Triple roll
Magnets:
Neodymium
Dual-force air ventilation:
Yes
Demodulation Rings material:
Aluminium
Spider:
Single
Thiele - small parameters
Resonance frequency (Fs):
55 Hz
DC resistance (Re) (ohm):
5.20 ohm
Mechanical factor:
8.00 Qms
Electrical factor:
0.37 Qes
Total factor:
0.35 Qts
Bl factor (Bl) (T x m):
18.10 T x m
Effective moving mass (Mms):
71.0 g
Equivalent Cas air loaded (Vas):
136.0 liters
Effective piston area (Sd):
0.090 m2
Max. linear excursion (Xmax):
5 mm
Voice coil inductance @ 1kHz (Le1k):
1.20 mH
Half-space efficency (Eff):
5.00%
General specifications driver
Exit Throat Diameter:
1.0 inch / 25 mm
Related Impedance:
8.00 ohm
Program Power (watt):
100 W
Power handling capacity (watt):
50 W
Sensitivity:
109 dB
Frequency range driver:
1200 - 20000 Hz
Diaphragm Material:
Polymide
Suspension Material:
Polymide
Suspension Design:
Flat
Minimum Impedance (ohm):
6.50 ohm
Voice Coil Diameter driver:
1.75 inch / 44 mm
Voice Coil Material:
Edgewound Aluminium
Number of layers:
1.00
Kind of layers:
outside
Flux Density:
1.9 T
Phase Plug Design:
2 slot
Phase Plug Material:
PP Composite
Magnetics:
Neodymium
General specifications horn
Throat Diameter:
25 mm / 1 inch
Horizontal coverage angle:
60°
Vertical coverage angle:
60°
Cut-off Frequency:
1800 Hz
Material:
Structural Polyurethane
Mounting informations
Overall diameter:
388 mm / 15.28 inches
Bolt circle diameter:
369-373 mm / 14.53-14.69 inch
Bolt hole diameter:
6 mm / 0.24 inch
Front mount baffle cut-out:
357 mm / 14.06 inch
Rear mount baffle cut-out:
358 mm / 14.09 inch
Volume occupied by the driver:
2.9 liters / 0.11 ft3
Standard compliance
CE compliance:
Yes
Size
Height:
174 mm / 6.85 inches
Diameter:
388 mm / 15.28 inches
Weight:
4.29 kg / 9.46 lbs
Shipping informations
Package Height:
240 mm / 9.45 inches
Package Width:
440 mm / 17.32 inches
Package Depth:
440 mm / 17.32 inches
Package Weight:
5.9 kg / 13.01 lbs
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RCF products are continually improved. All specifications are therefore subject to change without notice.