Designed specifically for professionals deploying top-tier sound reinforcement at live concerts, performing arts centers, sports venues, and premium installations, the RCF KX 45-A is a 3200W active 2-way point-source speaker that's tuned for absolute clarity and deep, powerful bass. The KX 45-A combines precise directivity, high SPL capability, and advanced system integration.
A 3200W amplifier delivers 2000W to the 15" neodymium woofer in a bass-reflex design, while a 1200W amplifier powers the high-frequency neodymium compression driver with a 4" titanium dome, coupled to a 100 x 70° True Resistive Waveguide, rotatable by 90° to ensure flexible coverage options. The integrated amplifier features proprietary DSP processing and remote management via RDNet that enable optimal system performance. The rugged, tour-ready, high-quality Baltic-birch plywood cabinet is easy to carry and installed securely using the dedicated rigging points.
At a Glance
- 137 dB Max SPL
- Rotatable 100 x 70° TRW horn
- 15” neodymium woofer, 3.5” voice coil
- 4” Titanium dome, neodymium compression driver
- 2 channel, 3200W Class-D Amplifier
- DSP Processing with FiRPHASE and BMC
- RDNet Networked Management
- powerCON TRUE1 TOP mains connectors
Preset Selector
CLOSE (C) – Designed for listening distances less than 13':
- C1. CLOSE: Reduces high frequencies by -3 dB for a natural, non-aggressive sound.
- C2. CLOSE HIGH PASS: Same as C1, with a 24 dB/oct high-pass filter at 100 Hz for specific applications.
LINEAR (L)—Suited for distances of 13 to 36':
- L1. LINEAR: Offers a perfectly linear response, ideal for outdoor or low-reverb environments.
- L2. LINEAR HIGH PASS: L1 with a high-pass filter at 100 Hz, ideal for satellite or speech systems.
- L3. LINEAR LOW LEVEL - PLAYBACK: Linear with a +3 dB bass boost, perfect for low-level playback.
- L4. LINEAR INDOOR: Adds a -3 dB low-frequency shelf for better balance in reverberant indoor spaces.
FAR (F)—For distances greater than 36':
- F1. FAR: Boosts high frequencies by +3 dB to compensate for air absorption, improving clarity.
- F2. FAR HIGH PASS: Similar to F1 with a 24 dB/oct high-pass filter at 100 Hz.
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 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
Low Frequency
- The 15” high-power Precision Transducer's cone is equipped with neodymium magnets and a 3.5” voice coil, delivering exceptional power handling and acceleration. By integrating Bass Motion Control (BMC) DSP and a FiRPHASE-optimized crossover, the design extends the low-frequency range and improves midrange efficiency. These technologies align perfectly with the waveguide dispersion, ensuring seamless coverage continuity at the crossover point.
High Frequency
- Paired with the True Resistive Waveguide (TRW), the 4" pure titanium dome NDT995 compression driver maximizes linearity, precision and long-term reliability. Its motor structure features a high-flux density neodymium magnet assembly, ultralight edge wound aluminum wire, a 4-slot phase plug, and a copper ring design to deliver exceptional power handling, sensitivity, and low distortion across its operating bandwidth. With a very low crossover point at 750 Hz, this allows a better impulse response, fast decay, and superior efficiency. Lightweight and powerful, RCF neodymium drivers are a reference in performance and reliability
RDNet Network Control
- 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.
Robust and Durable
The enclosure is made of high-quality Baltic birch plywood, glued with water-resistant adhesive and coated with weatherproof polyurea paint, ensuring excellent waterproofing, UV resistance, corrosion protection, and durability against abrasion, impacts, and mechanical stress. The solid machined aluminum structure efficiently dissipates heat fanlessly, improving enclosure stiffness, while the high-strength structural steel rigging ensures a high safety factor for secure weight management. Die-cast aluminum handles with ergonomic rubber grips enhance usability.
- Reinforced structural design
- Water resistant Birch enclosure
- Durable polyurea paint
- High-strength steel
- Ergonomic handles
- Machined aluminum heat sink
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.
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.