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RCF CX12N351 900W Live Sound Monitor Black — main product image
RCF

RCF CX12N351 900W Live Sound Monitor Black

12.6 inch97 inch28 inch18 inch45 inch

Deliver powerful, precise stage sound with RCF's 900W coaxial 12-inch live sound monitor.

$610.93*
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*Price sourced from Amazon.com. Last updated:Jun 28, 2026.Price and availability are subject to change.

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Overview

The RCF CX12N351 is a professional-grade 12-inch coaxial speaker designed for live sound monitoring, installed sound systems, and stage applications where high output and precise audio reproduction are essential. At its core is a 12-inch woofer with a 3.5-inch fiberglass-outside aluminum voice coil capable of handling 900 watts of continuous program power. The M-roll surround and exponential cone geometry work together to deliver controlled, low-distortion output across the 50 Hz to 3.0 kHz range, while a demodulation ring further reduces intermodulation distortion at high drive levels.

Mounted coaxially at the center is a 1.4-inch exit throat compression driver with a 2.5-inch pure titanium diaphragm, handling 180 watts and covering 700 Hz to 20 kHz. This coaxial arrangement ensures that both low and high frequencies originate from the same point, providing coherent wavefront dispersion that is especially critical in stage monitor applications where performers need consistent sound across a wide listening area. Dual-forced air ventilation keeps the voice coil cool under sustained high-power conditions, minimizing power compression and maintaining output consistency during long sets or events. The speaker's 98.5 dB sensitivity means it delivers substantial volume without requiring excessive amplifier headroom.

Key Features

Brand : RCF || Model # CX12N351 || MOUNTING INFORMATION || Overall DIA: 12.6 inch || Bolt circle DIA: 11.54-11.97 inch || Bolt hole DIA: 0.28 inch || Front mount baffle cut-out : 11.18 inch || Rear mount baffle cut-out : 11.18 inch || Volume occupied by the driver : 2.2 liters / 0.09 ft || SIZE || Height : 6.18 inch || Diameter : 12.6 inch || Weight : 13.87 lbs || SHIPPING INFORMATION || Height : 9.45 inch || Width : 14.17 inch || Depth : 14.17 inch || Weight : 16.47 lbs ||

FEATURES || 3.5-inch , fibreglass outside aluminum voice coil || 900 Watt continuous program power handling || 98.5 dB Sensitivity || 50 Hz - 3.0 kHz Frequency range || Dual-forced air ventilation for minimum power compression || M-roll surround and exponential cone geometry || Demodulation ring || 2.5-inch Diaphragm, 1.4-inch Exit Throat/pure titanium compression driver || 180 Watt Continuous program power handling || Frequency range: 700Hz – 20kHz ||

SPECS || Nominal DIA : 12 inch || Related Impedance : 8.00 ohm || Program Power (watt) : 180W || Power handling capacity : 90W || Sensitivity : 110.0 dB || Frequency range : 700 - 20000 Hz || Effective piston DIA : 10.24 inch || Max. Excursion Before Damage : 1.54 inch || Min. Impedance (ohm) : 6.8 ohm || Voice Coil DIA : 3.5 inch || Voice Coil Length : 0.67 inch || Number of layers : 2 || Kind of layers : inside/outside || Top Plate Thickness : 0.43 inch || Cone Design : Curved ||

Surround Design : M-roll || Dual-force air ventilation : Yes || SPECS DRIVER || Exit Throat DIA: 1.4 inch || Related Impedance : 8.00 ohm || Program Power (watt) : 180W || Power handling capacity (watt) : 90W || Sensitivity : 110 dB || Frequency range driver : 700-20000 Hz || Suspension Design : Progressive || Minimum Impedance : 7.90 ohm || Voice Coil DIA driver : 2.5 inch || Number of layers : 1 || Kind of layers : outside || Flux Density : 2.0 T || Phase Plug Design : 3 slot ||

THIELE - SMALL PARAMETERS || Resonance frequency (Fs) : 58 Hz || DC resistance (Re) (ohm) : 5.80 ohm || Mechanical factor : 5.40 Qms || Electrical factor : 0.21 Qes || Total factor : 0.20 Qts || Bl factor (Bl) (T x m) : 25.00 T x m || Effective moving mass (Mms) : 62.0 g || Equivalent Cas air loaded (Vas) : 47.0 liters || Effective piston area (Sd) : 0.050 m2 || Max. linear excursion (Xmax) : 6 mm || Voice coil inductance @ 1kHz (Le1k) : 1.50 mH || Half-space efficency (Eff) : 4.40% ||

Specifications

Brand
RCF
Model
CX12N351
Speaker Type
Coaxial
Nominal Diameter
12 inches
Overall Diameter
12.6 inches
Woofer Program Power
900W
Woofer Sensitivity
98.5 dB
Woofer Frequency Range
50 Hz – 3.0 kHz
Woofer Impedance
8 ohms (6.8 ohm minimum)
Voice Coil Diameter
3.5 inches
Compression Driver Program Power
180W
Compression Driver Sensitivity
110 dB
Compression Driver Frequency Range
700 Hz – 20 kHz
Exit Throat Diameter
1.4 inches
Diaphragm Material
Pure Titanium
Diaphragm Diameter
2.5 inches
Resonance Frequency (Fs)
58 Hz
Effective Moving Mass (Mms)
62.0 g
Equivalent Air Volume (Vas)
47.0 liters
Max Linear Excursion (Xmax)
6 mm
Height
6.18 inches
Weight
13.87 lbs

Pros & Cons

👍 Pros

  • 900W program power handling delivers high output for demanding live sound applications
  • Coaxial design integrates woofer and compression driver on the same axis for coherent sound dispersion
  • Dual-forced air ventilation reduces power compression during sustained high-volume use
  • Pure titanium compression driver diaphragm provides durability and extended high-frequency response
  • M-roll surround and exponential cone geometry improve linearity and reduce distortion

👎 Cons

  • Weighs 13.87 lbs, which adds significant weight to monitor cabinets or rigging
  • Passive design requires a separate external amplifier, adding to overall system cost
  • Mounting requires precise baffle cutout and bolt pattern alignment during installation
  • The 12.6-inch overall diameter demands a cabinet with adequate internal volume

Frequently Asked Questions

The woofer handles 900 watts continuous program power, while the integrated compression driver handles 180 watts continuous program power.
The woofer covers 50 Hz to 3.0 kHz, while the coaxial compression driver extends from 700 Hz to 20 kHz, providing broad full-range coverage from a single unit.
The speaker has a nominal impedance of 8 ohms with a minimum impedance of 6.8 ohms on the woofer and 7.9 ohms on the compression driver.
The front or rear mount baffle cutout is 11.18 inches, with a bolt circle diameter of 11.54 to 11.97 inches.
No, the CX12N351 is a passive speaker driver that requires an external amplifier matched to its power handling specifications.

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