KX SERIES

The Key to Pure Performance

The KX Series represents RCF’s latest innovation in audio engineering, designed specifically for professionals deploying top-tier sound reinforcement at live concerts, performing arts centers, sports venues, and premium installations.

Legacy For Innovation

Since its founding in 1949, RCF has been a respected leader in microphone and transducer technology, driving innovation within the vibrant Italian tech industry. However, it was in the 1970s that the company gained international recognition for its high-power transducers, which met the growing demands of the expanding concert industry.

The early live sound era required loudspeakers that were not only reliable and powerful but also capable of delivering rich, musical sound to increasingly larger venues. At this time, Italy was leading the charge in technological advancements, boasting research and unrivaled manufacturing capabilities. RCF quickly became one of the pioneering entities in the audio industry, supplying components to major brands over the next decades, adeptly converting the soul of music into dynamic, high-pressure sound waves.

In 2006, RCF took a significant step forward by launching its own line of high-end touring speakers. These systems were characterized by their straightforward yet innovative design: integrated powered systems with embedded DSPs, remote control capabilities, and robust, reliable hardware. This legacy of innovation and excellence is built inside every KX Series product, encapsulating RCF’s commitment to quality and sound fidelity in the modern era.

The KX Series encompasses powerful active speakers that deliver superior sound performance, featuring advanced DSP, remote management capabilities, full weatherproof protection, and unmatched scalability. Engineered for high-power efficiency, these rider-friendly speakers boast robust hardware and a lightweight design. The KX Series sets a new industry standard for power, accuracy, and coverage.

Key Factors

Designed for touring and professional deployments
Fast deployment and quick tuning
Large accessory catalog
RCF Precision Transducers
RDNet for control, monitoring and remote management
Advanced DSP Platform
Designed and manufactured in RCF's headquarters

APPLICATIONS

Large-format

sound systems

Small to midsize

main PA systems

Indoor and outdoor

installations

Distributed

sound systems

Fill speaker

combinations

LIVE CONCERTS AND TOURING

Rider-approved, studio-quality sound with full remote management, robust hardware, high-class electronics, and weatherproof cabinets to streamline time-sensitive operations.

SPORTS VENUES

Superior vocal coherence with optimal intelligibility. KX advanced electro-acoustic design, with extended SPL, can withstand crowd noise with absolute clarity.

AUDITORIUM AND THEATERS

Precision coverage and intelligibility for demanding performing arts. With zero degrees FiRPHASE linearity, the system engineer requires simple time delay alignments.

CONCERT HALLS

Audiences will experience pinpoint-accurate coverage and full dynamic range of the performance at any volume, whether for symphonic music or electronic performances.

HOUSES OF WORSHIP AND CORPORATE SOUND

Exceptional intelligibility, precise coverage control, and superior rejection of microphone feedback. When reverberation control is required, the KX Series delivers.

Innovation

The engineering and development team delivers modern solutions with meticulous attention to every detail—from the optimization of the loudspeaker voice coil wire to the maximization of power efficiency. Each component is engineered for peak performance.

Integration

RCF is among the few loudspeaker manufacturers globally with the capability to design and manufacture every element of a sound system entirely in-house. This includes transducers, speaker systems, amplification, and management software, ensuring seamless integration and performance across all components.

Intensity

A rigorous process involving extensive measurements and advanced computer-aided simulations is employed to perfect transducer behavior, amplifier performance, and waveguide response prior to prototyping. This precision-driven approach results in unmatched sound quality and system reliability.

TECHNOLOGY

Advanced electronics

The high-powered Class-D amplifiers, tailored for each transducer, deploy pristine sound with efficient heat dissipation at the lowest possible distortion, along with low power consumption.

High-end AD/DA conversion up to 96 kHz - 32-bit floating-point, and onboard DSP for the best sound quality. Thanks to the proprietary RDNet networked management and control, every KX speaker provides in-depth remote monitoring through multiple sensors. The system engineer has immediate feedback of transducer status, fan speed, temperature, VU meters, limiters and much more.

Precision Transducers

RCF has over 75 years of experience in designing transducers, particularly moving coil loudspeakers. Their transducers are engineered for optimal power and sound purity, with minimal distortion and the ability to withstand extended use.

Heritage

RCF has pioneered advanced transducer technologies, incorporating materials like Neodymium, Carbon Fibre, Titanium, Kevlar, PKX, Kapton, and Mylar hybrids.

Endurance

Every model undergoes a rigorous 200-hour stress test to guarantee durability and peak performance.

Vanguard

Precision measurements, critical listening, and custom tuning combine to create an exceptional audio experience.

PRECISION TRANSDUCERS

Digital Signal Proficiency

The KX DSP platform is the next-generation audio engine for RCF active speakers and DSP amplifiers. Designed as a real-time DSP engine, it offers unparalleled processing density and scalability, propelling RCF speakers to a new dimension of performance.

This groundbreaking DSP engine delivers unmatched processing power for its class.

Bass Motion Control®

KX speakers equipped with Bass Motion Control (BMC) produce the lowest audible frequencies without affecting the woofer stability, with extended linearity and better sound integrity. The BMC method creates a complete map of the dynamic behavior of the woofer, to generate a custom algorithm that limits over-excursions. Traditional high-pass filters protect the woofer from over-excursion but change the phase/frequency response. In contrast, the new BMC algorithm protects the woofer allowing total freedom of signal reproduction.

New perspective on linearity

KX speakers are designed using a proprietary and advanced digital FiR technology, conceived to deliver transparent sound, absolute clarity, and perfect imaging to the listener. The special FiRPHASE processing distributes sound to all listeners without phase distortions, ensuring minimum latencies in the system. The algorithm corrects phase and amplitude (if necessary) by taking into account the weak points of the transducers and the resonances or cancellations due to the cabinet of the loudspeaker.

VIEW DETAILS

HARDWARE AND ENCLOSURE

Robust and durable

The high-quality Baltic birch plywood enclosure is crafted with each layer glued using water-resistant adhesive before the painting process. The weatherproof polyurea paint forms a thick, full coating over the cabinet, with excellent waterproofing, UV resistance, corrosion protection and the ability to withstand abrasion, impacts, and mechanical stress.

All mechanical rigging is built from high-strength structural Swedish steel. After undergoing a quenching and tempering process, this special steel guarantees a yield strength nearly four times higher than that of commercial-grade steel, while maintaining its mechanical properties even at temperatures as low as –40°C. The rigging has a high safety factor, ensuring all weight is securely managed. KX enclosures feature die-cast aluminum handles with ergonomic rubber grips.

Attached to a solid machined aluminum structure, the amplifier heat dissipation is efficient and fanless, enhancing the stiffness of the enclosure.

Reinforced structural design
Water Resistant Birch Enclosure
Durable Polyurea Paint
High-strength Steel
Ergonomic handles
Machined Aluminum Heat Sink

Reinforced Structural Design

The internal structure is designed with reinforced bracing to ensure durability during long-term use and transport. All components, including metal inserts, are securely assembled using high-quality metric screws for maximum stability. Additionally, the amplifier is housed in a dedicated chamber, separate from the transducers, to enhance both efficiency and reliability.

The KX signature front grille

The heavy-duty front grille is powder-coated for maximum robustness. A special transparent-to-sound foam backing on the inside of the grille helps to further protect the transducers from dust. Waterproof speakers feature an advanced acoustically transmissive water-repellent mesh. Logo is rotatable for horizontal or vertical placement.

Tour Ready Construction

Attached to a solid machined aluminum structure on the rear panel, the amplifier ensures efficient heat dissipation. The enclosure is internally reinforced and sturdy, equipped with waterproof powerCON® TRUE1 TOP mains connectors, guaranteeing durability under any outdoor conditions.

SOUND SYSTEM MANAGEMENT AND CONTROL SOFTWARE

RDNet is an advanced platform for integrated monitoring and control of sound systems - from small live and installed setups to massive arena systems. Based on a robust networked architecture, RDNet combines system control, line array design, and comprehensive audio measurements into a single powerful software package.

Engineers and technicians can intuitively manage every device on the network, from individual components to multiple groups. The platform provides full DSP control of compatible devices, with flexible configuration tools for perfectly tuning the system response at maximum speed. Users have real-time access and oversight of all key settings from a centralized interface.

Icone allineate