(4) RCF HDL 28-A Active Two-Way Line Array Module Speakers with Wheeled Flight Cases Package

The RCF HDL 28-A is a compact bi-amped 2-way active touring system for a wide range of applications, both indoors and outdoors, with an emphasis on vocal intelligibility. It features two 8-inch woofers and an impressive 3-inch titanium compression driver. The time coherent waveguide is the result of in-depth research and design. Following the HDL 30-A philosophy, the HDL 28-A shares the composite material cabinet, the zero-degree phase and ultra-linear amplitude response. The built-in 2200 watt class-D amplifier delivers excellent playback clarity and up to 135 decibels SPL max. The RCF HDL 28-A features state of the art RCF transducers with lightweight neodymium magnets. Considering its acoustical power, it has a remarkably low weight for easy handling and flying.

RCF HDL 28-A Active Two-Way Line Array Module Key Features:

• 2200W Two Way Amplifier.
• 135 dB Max SPL.
• 48 kHz, 32 bit DSP processing.
• RDNet Networked Management.
• 2 x 8" Neodymium Woofers, 2.5" voice coil.
• 1.4" Titanium Compression Driver, 3.0" voice coil.
• Exclusive FiRPHASE technology on-board.
• 750 Hz Crossover Point.

The demands of modern sound reinforcement systems are higher than ever before. Besides pure performance - high sound pressure levels, constant directivity and sound quality other aspects are important for rental and production companies such as reduced weight and ease of use to optimize transport and rigging time. HDL 28-A is changing the concept of compact arrays, providing primary performances to an extended market of professional users.

The HDL 28-A is a true active high power ready to use touring system from small to medium size events, indoors and outdoors. Equipped with 2x8" woofers and one 3" drivers, it offers excellent playback quality and high sound pressure levels with a built in 2200 W powerful digital amplifier that delivers superior SPL, while reducing energy requirement.

Each component, from the power supply to the input board with DSP, to the output stages to woofers and drivers, has been consistently and specially developed by RCF's experienced engineering teams for the realization of the HDL 28-A system, with all components carefully matched to each other. This complete integration of all components allows not only superior performance and maximum operational reliability, but also provides users easy handling and plug & play comfort.

Besides this important fact, active speakers offer valuable advantages: while passive speakers often need long cable runs, the energy loss due to the cable resistance is a huge factor. This effect is not seen in powered speakers where the amplifier is just a couple of centimeters away from the transducer. Using advanced neodymium magnets and a groundbreaking new housing constructed from lightweight composite polypropylene, it has a remarkably low weight for easy handling and flying.

RCF RDNet 3.0 Monitoring and Management Network
The new RDNet release features extensive improvements. The audio system is now configurable in Groups of speakers or in the new Array clusters, the Air Compensation and the Cluster Size shaping are more precise and controllable, as well as the FiRPHASE gain. The subwoofer configuration is faster, even for complex EndFire set-ups.

The Acoustic Beauty of the symmetry
The symmetrical design of the cabinet produces identical left and right coverage. The component positioning and special DSP crossover filtering of the HDL 28-A take care of the constant directivity without spots of break up or attenuation. The specially-designed front baffle provides coplanar woofers, controlled LF dispersion and a central space to host the 4PATH waveguide. The heavy-duty front grille is powder coated. A special transparent-to-sound foam backing inside helps to further protect the transducers from dust. For weatherproof capabilities, a rain cover is available.

Powerful class D Amplifier
RCF's Class-D power amplifier technology packs huge performance operating with high efficiency into a lightweight solution. HDL amplifiers deliver a ultra-fast attack, realistic transient response, and impressive audio performance. The amplifier features a solid machined aluminium structure which not only stabilises the amplifier during transportation but also helps the fan-less heat dissipation. All the HDL amplifiers present SMPS power supply section to produce maximum output and minimum weight.

First Class Transducers
The RCF HDL 28-A features state-of-the-art RCF transducers with neodymium magnets. RCF's experienced engineering teams have specially developed and matched each component - starting from the power supply through the input board to the amplifiers and transducers right up to the complete HDL 28-A System.

High Frequencies

• High-performance RCF ND840
• 3.0-inch diaphragm titanium compression driver
• 1.4-inch exit throat
• 750 Hz Crossover Point

Low Frequencies

• 2 X 2.5" voice coil neodymium 8" woofers
• Linear low frequencies handling down to 65 Hz
• Water resistant fibre doped cone
• Polycotton M-roll surround
• Hypervented magnetic structure

Flying Attitude
The advanced rigging concept derives directly from its big brothers: the RCF HDL 30-A and HDL 50-A.

The integrated mechanics are both fast and reconfigurable, allowing the system engineer to create J-shaped and spiral arrays. The hardware is designed for easy and fast setup. The angle can be adjusted on the ground before the system is hung and slipped automatically into the correct position as the array is pulled up.

Up to 20 HDL 28-A modules can be fastened on a single flybar.

New Perspective on Linearity
RCF speakers are designed using a proprietary and advanced FiR filtering technology, conceived to deliver transparent sound, absolute clarity and perfect stereo images to the listener. The special FiRPHASE filters allow to achieve coherent distribution of sound for all listeners without phase distortions, ensuring minimum latencies to the system.