RCF CX15N351 Neodymium Coaxial Speaker - 15"

The RCF CX15N351 is a high-performance 15-inch neodymium coaxial driver, designed for exceptional linearity, high power handling, and minimal distortion. Featuring a 3.5-inch copper voice coil for the mid-bass and a 2.5-inch pure titanium diaphragm compression driver, it delivers powerful, clear, and dynamic sound. Its dual-force air ventilation and demodulation ring ensure low power compression and fast transient response. The structural polyurethane horn provides a coherent wavefront and controlled dispersion, making it ideal for high-quality professional audio applications.

Product Specifications:

Mid-Bass Driver:

Nominal Diameter: 15 inch / 381 mm

Impedance: 8 ohms

Program Power: 900W

Power Handling: 450W

Sensitivity: 101 dB

Frequency Range: 40 Hz - 3 kHz

Voice Coil Diameter: 3.5 inch / 89 mm

Voice Coil Winding Material: Copper

Voice Coil Design: Inside/Outside

Magnet Type: Neodymium

Cone Design: Curved

Surround Material: Polycotton (M-roll)

Demodulation Ring: Aluminum

Dual-Force Air Ventilation: Yes

Compression Driver:

Throat Diameter: 1.4 inch / 36 mm

Impedance: 8 ohms

Program Power: 180W

Power Handling: 90W

Sensitivity: 110 dB

Frequency Range: 700 Hz - 20 kHz

Diaphragm & Suspension Material: Pure Titanium

Voice Coil Diameter: 2.5 inch / 63 mm

Voice Coil Material: Edgewound Aluminum

Phase Plug Design: 3-slot Aluminum

Magnet Type: Neodymium

Horn Specifications:

Throat Diameter: 1.4 inch / 36 mm

Coverage Angle: 60° H x 60° V

Cut-off Frequency: 800 Hz

Material: Structural Polyurethane

Thiele-Small Parameters:

Resonance Frequency (Fs): 55 Hz

DC Resistance (Re): 5.6 ohm

Mechanical Q Factor (Qms): 6.00

Electrical Q Factor (Qes): 0.27

Total Q Factor (Qts): 0.26

Bl Factor: 23.5 T x m

Moving Mass (Mms): 80 g

Equivalent Air Volume (Vas): 110 liters

Effective Piston Area (Sd): 0.090 m²

Max Linear Excursion (Xmax): 6 mm

Voice Coil Inductance (Le1k): 1.65 mH

Half-Space Efficiency: 6.53%

Mounting Information:

Overall Diameter: 393 mm / 15.47 inches

Bolt Circle Diameter: 371-376 mm / 14.61-14.8 inches

Bolt Hole Diameter: 7 mm / 0.28 inch

Front & Rear Mount Baffle Cutout: 354 mm / 13.94 inches

Volume Occupied by Driver: 3.8 liters / 0.15 ft³

Compliance & Safety:

Standard Compliance: CE Compliant

Physical Specifications:

Height: 254 mm / 10 inches

Weight: 7 kg / 15.43 lbs

Shipping Information:

Package Dimensions (H x W x D): 240 x 440 x 440 mm / 9.45 x 17.32 x 17.32 inches

Package Weight: 8.5 kg / 18.74 lbs