RCF HDL 50-A, Owner'S Manual, Page: 5 / 28

3. THE HDL 50 SYSTEM
The HDL 50-A is a true active high power ready to use touring system for large events, indoors and outdoors. Equipped
with 2x12” woofers, four symmetrical 6.5” midranges and two 2” drivers, it offers excellent playback quality and high
sound pressure levels with a built in 2200W RMS 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 50-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 plywood and
polypropylene, it has a remarkably low weight for easy handling and flying.
4. POWER
REQUIREMENTS
AND SET-UP
WARNING
• The system is designed to operate in hostile and demanding
situations. Nevertheless it is important to take extremely care of the
AC power supply and set up a proper power distribution.
• The system is designed to be GROUNDED. Always use a grounded
connection.
• PowerCon appliance coupler is a AC mains power disconnection
device and must be readily accessible during and after the
installation.
VOLTAGE
The HDL 50 A amplifier is designed to work within the following AC Voltage limits: minimum voltage 110 Volt, maximum
voltage 260 Volt. If the voltage goes below the minimum admitted voltage the system stops working. If the voltage goes
higher than the maximum admitted voltage the system can be seriously damaged. To obtain the best performances from
the system it is very important that the voltage drop it is as low as possible.
CURRENT
The following are the long term and peak
current requirement for each HDL 50 A module:
The total current requirement is obtained multiplying the single current requirement by the number of modules. To obtain the best
performances make sure that the total burst current requirement of the system doesn’t create a significant voltage drop on the cables.
GROUNDING
Make sure that all the system is properly grounded. All the grounding points shall be connected to the same ground node.
This will improve reducing hums in the audio system.
VOLTAGE LONG TERM
230 Volt 6.3 A
115 Volt 2 x 6.3 A