RCF’s HDL 50-A active three-way line array module is designed for large events, indoors and outdoors. Equipped with two 12-inch woofers, four symmetrical 6.5-inch midranges and two 2-inch drivers, it promises excellent playback quality and high sound pressure levels with a built-in 4400W powerful digital amplifier. It also features neodymium magnets and a new housing constructed from lightweight plywood and polypropylene, allowing for a low weight of only 56 kg (123 lbs). The HDL 50-A is shipping now.
More details from RCF (www.rcf.it):
Main features
- 4400 Watt, 3 way amplification
- 140 dB max SPL
- 8 x high power neo transducers
- 48 kHz, 32 bit DSP processing
- RDNet on board
- Remote monitoring and control
- Symmetrical design
- Extremely low weight
Applications
• Large Concerts
• Rental
• Live Sound
• Performance venues
• Live Clubs
Components
Each component has been specifically developed by RCF’s experienced engineering teams for the realization of the HDL 50-A system, with all elements carefully matched to each other. This complete integration of all components not only allows superior performance and maximum operational reliability, but also provides users with easy handling and plug & play comfort.
High frequencies
The two ND 840 large format compression drivers deliver one of the key advantages of the HDL 50-A: the 3.0” voice coil allows a crossover point of 800 Hz and therefore this driver can produce almost all of the vocal range. This allows better coverage and superior efficiency.
Mid frequencies
– 4 x 2.0” voice coil 6.0” neo midranges
– Water resistant fiber doped cone
– Polycotton M-roll surround
– High-power magnetic structure
Low Frequencies
– 2 X 3.0” voice coil neodymium 12” woofers
– Water resistant fiber doped cone
– Polycotton M-roll surround
– Hypervented magnetic structure
– V-Shaped symmetrical design
The symmetrical design of the cabinet produces identical left and right coverage. The components’ positioning and special DSP crossover filtering of the HDL 50-A take care of the constant directivity without spots of break up or attenuation.
4PATH waveguide
- The HDL 50-A custom 4PATH designed waveguide allows a precise coverage of 90 x 10 degrees, while also delivering a superb, linear high-frequency response.
- The unique shape of the four ducts forming the guide creates an ideal isophasic load from 700 Hz to the highest audible frequencies.
Technologies
Advanced FIR Filtering
FIR filters offer a flat phase response starting from 250 Hz to 20 kHz. All frequencies arrive to the ear simoultaneously, providing correct impulse response with an unrivaled resolution and offset in depth.
The special algorithm for the creation of FIR filters permits optimizing the global latency introduced by the FIR to the system without sacrificing its filtering accuracy over all the audible frequency range.
Air absorption and HF correction
Traditional sound reinforcement systems suffer from losses in high-frequency sounds due to air absorption at greater distances. RCF has developed an innovative algorithm to compensate for high-frequency losses.
Special phase-neutral filters are used to guarantee equal distribution of sound for all listeners. Thanks to individual DSP settings in each module and the integrated network, this is achieved very easily and precisely.
Cabinet
The HDL 50-A tour grade system comes in a composite wooden-polypropylene enclosure and is equipped with two aluminum side handles with rubber handgrips and two rear handles.
The compact and lightweight design of the system is combined with rugged steel mechanics for easy rigging and transportation.
Aiming the system is the most important pre-condition to get a proper working line array to achieve high reach and precise coverage.
Each HDL 50-A line array module has a built-in inclinometer to give information about the real tilt angle of each cabinet via RDNet software.
The integrated mechanics are both fast and reconfigurable, allowing the system engineer to create J-shaped and spiral arrays with 0.5° resolution.
The heavy-duty front grille is powder coated. A special transparent-to-sound foam backing helps to further protect the transducers from dust.
Software
Thanks to the unique RDNet software, the sound engineer has full control of every single speaker. RDNet provides extensive information such as temperatures, levels, inclinometers and more. The software allows various views to manage the system depending on the demands.
Every single component can be monitored thanks to the individual DSP and even extremely large systems can be easily organized and managed by this software.
A very unique feature is the curve function that creates sub-arcs and sets the arc’s opening angles just by selecting the value. Even complex cardioid subwoofer configurations for large events can be designed all in one go.
EASE Focus is a three-dimensional, acoustic simulation software for the configuration and modeling of line array systems, two-way speakers and subwoofer configurations (available in version III). Even complex system designs for large-scale events can be simulated.
EASE offers direct integration of HDL 50-A and subwoofers in the advanced Ease Focus III release.
The DX 1616 AES-Dante remote software designed for Microsoft Windows and Mac OSX allows the management of the DX 1616 Matrix Sound Processor.
– Pre-Amp configuration, selecting source types like analog, AES/EBU, Dante
– Designing Input groups for festival applications
– Input source processing with EQ, delay and compressor
– Powerful 16×16 router to assign processing tasks to flexible output patches
