What is the peak power output of the RCF NX 915-SMA?

The monitor is powered by a two-channel Class-D amplifier with a total peak output of 2100 Watts.

Can this speaker be used as a main PA speaker?

Yes, while designed as a stage monitor, its versatile wood cabinet and high SPL allow it to function as a stand-alone speaker system or a satellite speaker.

What is the maximum SPL of the NX 915-SMA?

The speaker is capable of reaching a maximum Sound Pressure Level (SPL) of 131 dB.

What size are the drivers in this unit?

It features a 15-inch woofer for low frequencies and a 1.75-inch compression driver for high frequencies.

What is RCF FiRPHASE technology?

FiRPHASE is a proprietary DSP technology that ensures linear phase for transparent sound and absolute clarity by optimising dynamics and time alignment.

What is the purpose of Bass Motion Control (BMC)?

BMC is a DSP feature that manages the woofer's excursion to provide deep and powerful bass response without distortion or damage to the driver.

What is the coverage area of the NX 915-SMA?

The speaker provides a coherent coverage area of 100 degrees horizontally by 70 degrees vertically.

What material is used for the cabinet construction?

The NX 915-SMA features a tour-ready, rugged all-wood cabinet that is designed to be lightweight and easy to transport.

Does the NX 915-SMA have built-in handles?

Yes, as a professional stage monitor, it is designed with ergonomic handles to facilitate quick stage setups and easy movement.

How does the TRW waveguide improve sound?

The TRW (True Resistance Waveguide) creates a coherent coverage area and helps produce distortion-free sound at high volume levels.

Is this speaker suitable for DJs?

Yes, its high power output, 15-inch woofer, and versatility make it an excellent choice for DJs as both a monitor or a main system.

What makes this different from the RCF ART series?

Unlike the composite-enclosure ART series, the NX 915-SMA features a wooden cabinet specifically shaped for stage monitoring and higher-tier DSP processing for professional touring.

Gear article

RCF NX 915-SMA Professional Active Stage Monitor

The RCF NX 915-SMA is a professional-grade active stage monitor and multipurpose loudspeaker powered by a 2100W two-channel Class-D amplifier. It features a 15-inch woofer, a 1.75-inch compression driver, and proprietary DSP technology to deliver sound pressure levels up to 131 dB.

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Overview and Design

The RCF NX 915-SMA is designed as a high-output tour-ready solution specifically for stage monitoring and front-of-house applications. Constructed with a rugged all-wood cabinet, the unit balances durability with portability. The enclosure is designed primarily for floor-based monitoring but includes features allowing it to function as a stand-alone speaker or a satellite unit when pole-mounted.

The internal architecture is driven by a two-channel 2100W amplifier, which provides ample headroom for demanding live environments. Its physical layout ensures a compact footprint on stage while maintaining the internal volume necessary for deep low-frequency reproduction.

Acoustic Engineering and DSP

The NX 915-SMA utilises a 15-inch woofer and a 1.75-inch compression driver. These are coupled through a TRW (True Resistance Waveguide) which mimics a resonance-free pure resistive load, reducing high-frequency distortion and providing a coherent 100-degree horizontal by 70-degree vertical coverage pattern.

Two proprietary RCF technologies process the audio signal: - FiRPHASE: This proprietary filtration technology ensures 0-degree linear phase, meaning the sound is time-aligned for improved clarity and stereo imaging. - Bass Motion Control (BMC): This algorithm manages the excursion of the woofer. Rather than using a simple high-pass filter, it maps the physical movement of the transducer to ensure deep, powerful bass response without risking over-excursion or distortion.

Performance and Sound Character

The primary sound characteristic of the NX 915-SMA is one of transparency and high-impact low end. With a maximum SPL of 131 dB, it is capable of cutting through high stage volumes, making it suitable for loud rock bands and large-scale events. The 15-inch driver ensures that lower-register instruments, such as bass guitars or kick drums, are represented with authority, while the 1.75-inch driver provides the necessary detail for vocal monitoring.

Market Context and Comparison

Within the RCF catalogue, the NX 915-SMA offers a more specialized monitor-focused enclosure compared to the ART 735-A MK5, which is more commonly used as a traditional PA top. When compared to budget-friendly options like the SubZero P15X or the dB Technologies B-Hype 15, the RCF provides significantly higher power ratings and more sophisticated DSP.

While the NX 915-SMA is a full-range solution, it can be paired with high-output subwoofers such as the QSC KLA181 for applications requiring extreme low-frequency extension in a FOH configuration.

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Frequently asked questions

What is the peak power output of the RCF NX 915-SMA?: The monitor is powered by a two-channel Class-D amplifier with a total peak output of 2100 Watts.
Can this speaker be used as a main PA speaker?: Yes, while designed as a stage monitor, its versatile wood cabinet and high SPL allow it to function as a stand-alone speaker system or a satellite speaker.
What is the maximum SPL of the NX 915-SMA?: The speaker is capable of reaching a maximum Sound Pressure Level (SPL) of 131 dB.
What size are the drivers in this unit?: It features a 15-inch woofer for low frequencies and a 1.75-inch compression driver for high frequencies.
What is RCF FiRPHASE technology?: FiRPHASE is a proprietary DSP technology that ensures linear phase for transparent sound and absolute clarity by optimising dynamics and time alignment.
What is the purpose of Bass Motion Control (BMC)?: BMC is a DSP feature that manages the woofer's excursion to provide deep and powerful bass response without distortion or damage to the driver.
What is the coverage area of the NX 915-SMA?: The speaker provides a coherent coverage area of 100 degrees horizontally by 70 degrees vertically.
What material is used for the cabinet construction?: The NX 915-SMA features a tour-ready, rugged all-wood cabinet that is designed to be lightweight and easy to transport.
Does the NX 915-SMA have built-in handles?: Yes, as a professional stage monitor, it is designed with ergonomic handles to facilitate quick stage setups and easy movement.
How does the TRW waveguide improve sound?: The TRW (True Resistance Waveguide) creates a coherent coverage area and helps produce distortion-free sound at high volume levels.
Is this speaker suitable for DJs?: Yes, its high power output, 15-inch woofer, and versatility make it an excellent choice for DJs as both a monitor or a main system.
What makes this different from the RCF ART series?: Unlike the composite-enclosure ART series, the NX 915-SMA features a wooden cabinet specifically shaped for stage monitoring and higher-tier DSP processing for professional touring.