Item #1597379 Model #13000786

RCF NX915-SMA 15" Professional Powered Stage Monitor Standard

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A stage monitor designed for sound providers, musicians, bands, and DJs.

The RCF NX 915-SMA speaker is a stage monitor designed for sound providers, musicians, bands, and DJs. The combination of a 1.75" compression driver, 15" woofer, two-channel 2,100W amplifier, and the TRW waveguide produces coherent 100° x 70° coverage for the listening area with up to 131dB SPL of distortion-free sound. Used as a stage monitor, standalone speaker system, or satellite paired with a subwoofer, the NX 915-SMA blends high performance and reliability in a compact package. Combining RCF proprietary FiRPHASE and Bass Motion Control DSP processing, NX 915-SMA Series speakers deliver absolute clarity and deep, powerful bass response. The tour-ready, rugged all-wood cabinet is easy to carry and set up onstage or on a pole.

Power that Moves

The most powerful amplifier in its class, RCF's improvements in transducer design make them stronger and powerful, so the amplifier follows the evolution. With 2100W power, the 2-channel NX 9 Class-D amplifier is 50 percent more powerful than previous models, able to manage extreme sound pressure levels with an ultra-fast attack, realistic transient response, and very low heat loss. NX 9 is energy-efficient so there's no need for a cooling fan—the amplifier is attached to a solid aluminum heat exchanger in the rear of the cabinet—with no moving parts. The input circuit features a new low distortion design with an advanced safety limiter, maintaining the true character of the input signal at all levels. All NX 9 amplifiers are designed according to EN62368-1 for maximum safety and present a Switch Mode Power Supply section joining high-efficiency with minimum weight.

Superior Transducers

Lightweight and powerful, RCF drivers are a reference in high performance. All transducers are designed by RCF engineers in Italy for maximum reliability and perfectly matched components. The new 1.75" voice coil design with Polyimide-Kapton dome features a new bonding technology and reinforcement ribs making it 10 times more rigid than previous models, for increased accuracy and durability. The redesigned phase plug increases sound clarity with less distortion. Low-frequency transducer design gains more stability over higher currents, with less distortion and better heat handling.

Bass Motion Control

When searching for an extended bass with enhanced performance, RCF engineers found a way to remove the high-pass filter, replacing it with a forward-thinking approach. Introducing BMC (Bass Motion Control), the newly advanced woofer excursion management feature. The speaker equipped with BMC can handle the lowest audible frequencies without affecting the woofer stability, with extended linearity and better sound integrity.

The BMC method works by creating a complete map of the dynamic behavior of the woofer, to generate a custom algorithm that only limits over-excursions. This gives total freedom of signal reproduction to the transducer. When high-pass filters normally protect the woofer motion from becoming destructive but change the phase behavior, the new BMC algorithm breaks conventional rules.

More Than a Stage Monitor

The NX 9 Series is designed to fit all listening requirements from sound providers to deliver high power and pristine sound from a compact and portable speaker, with an integrated amplifier on board. From the wood cabinet to the final texture and the rugged protective grille, NX 9-SMA offers maximum strength for intensive use on the road.
Acoustical Specifications
  • Frequency Response: 45 Hz ÷ 20000 Hz
  • Max SPL @ 1m: 131 dB
  • Horizontal coverage angle: 100°
  • Vertical coverage angle: 70°
  • Compression Driver: 1 x 1.0'', 1.75'' v.c
  • Woofer: 15'', 2.5'' v.c
  • Input/Output Section
  • Input signal: bal/unbal
  • Input connectors: Combo XLR/Jack
  • Output connectors: XLR
  • Input sensitivity: -2 dBu/+4 dBu
Processor Section
  • Crossover Frequencies: 1600 Hz
  • Protections: Thermal, RMS
  • Limiter: Soft Limiter
Power Section
  • Total Power: 2100 W Peak
  • High frequencies: 700 W Peak
  • Low frequencies: 1400 W Peak
  • Cooling: Convection
  • Connections: Powercon TRUE1 TOP IN/OUT
Standard Compliance
  • Safety agency: CE compliant
Physical Specifications
  • Cabinet/Case Material: Plywood
  • Handles: 1 on side and 1 on top
  • Pole mount/Cap: Yes
  • Grille: Steel
  • Color: Black
  • Height: 14.07"
  • Width: 27.76"
  • Depth: 17.98"
  • Weight: 38.14 lbs


  • Up to 131 dB Sound Pressure Level
  • 2100W Class-D bi-amplification
  • 45-20000 Hz linear frequency response
  • 1.75" Compression Driver
  • 15" Woofer
  • FiRPHASE zero degrees phase technology
  • Bass Motion Control woofer excursion management
  • 70ºx100º Constant Directivity Coverage Angle
  • Perfectly tailored for horizontal or vertical deployment