DAS AUDIO SOUND E11EVEN DX Series, Руководство пользователя

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RF EMISSIONS
The high frequency resonant converters in the DX series amplifiers have been designed to have
very low radio frequency (RF) emissions; however even these low level emissions can cause
interference with other equipment.
In order for this to be minimised, the amplifier should be mounted in a metal rack enclosure,
which should have a separate (technical) Earth. Alternatively a separate earth should be
attached to the amplifier at the rear rack mounting bracket.
DYNAMIC AMPLIFIER PERFORMANCE MEASUREMENTS
The DX series is the very latest example of a 'dynamic amplifier'. This new 'breed' of power
amplifiers provide very high peak power levels in a much smaller, and lighter, package than
previously possible with conventional amplifiers.
They are designed specifically for today's high power audio installations, which use multiple
speakers with electronic crossovers or speaker controllers. These systems can handle very high
transient signals that far exceed their RMS power rating. The DX series amplifiers have been
designed to match this requirement and can deliver huge levels of power for short durations.
In order to protect themselves and the loudspeakers that they are driving, continuous signals
such as sine waves, are automatically detected and reduced (ramped down) to a safe level.
When trying to measure the power output however, continuous signals will give totally incorrect
results. A dynamic signal, such as a tone burst, should be used and the levels measured by
monitoring the waveform on an oscilloscope. The power envelope can then be accurately
measured.
Our power output figures are measured using signals with known Crest Factors and are quoted
at the rear of this manual on page 43 and on our website.
Please refer to the technical area of our website for further information.
INITIAL SET-UP AND SWITCHING ON
Please read all documentation before operating your equipment and retain all documentation
for future reference.
Do not spill water or other liquids into or on the unit and do not operate the unit while standing
in liquid.
Do not block fan intake or rear ventilation outlets or operate the unit in an environment that
could impede the free flow of air around the unit.
If the unit is used in an extremely dusty or smoky environment, it should be cleaned of any
collected debris at regular intervals. Please also see the notes regarding maintenance on page
10. It is important that the power output of your amplifier is matched to the power handling
capacity of your loudspeaker. If not, damage to the loudspeaker could occur.
Switching On…
At 'switch-on' the protection circuit will initially activate whilst the circuits stabilise, indicated by
the red A/P LED illuminating, in addition to various other LEDs. After a few seconds the red A/P
LED will extinguish indicating a satisfactory working condition. Other LEDs may remain
illuminated depending upon rear panel switch settings and input connections. If the A/P LED
does not extinguish after 5 seconds the unit may be faulty or some external connections may be
incorrect or inappropriate. If this occurs you should power down the unit and remove all external
connections (except for the mains power supply) and repeat the power up sequence. If the
problem persists please contact us.
E11EVEN SOUND \ DX \ User’s Manual
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