RDNet in all sizes thanks to the newly introduced RCF HDL 28-A

In Audio Product News, Loudspeaker, Product Newsby Media


The RCF HDL System has a new member in the family: 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. 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 deciBel 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.


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 ND 840

– 3.0″ diaphragm titanium compression driver

– 1.5-inch exit throat

– 750 Hz Crossover Point

Low Frequencies

– 2 X 2.5” voice coil neodymium 8” woofers

– Linear low frequencies handling down to 65Hz

– Water resistant fiber doped cone

– Polycotton M-roll surround

– Vented magnetic structure


The custom 4 PATH-designed waveguide allows precise coverage of 100 x 15 degrees, while also delivering an excellent, linear high-frequency response. The unique shape of the four ducts forming the guide creates an ideal isophasic load from 750 Hz to the highest audible frequencies.


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


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.




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.

For more information, please visit rcf.com