Dynacord Professional Power Amplifiers - Manual (Page 16)

P
ower
H s
eries
the power amplifiers of the
powerh series represent a
milestone in the design and
production of high-performance
power amplifiers.
Their innovative multi-stage Grounded
Bridge Class H topology with its
floating switching power supply
offers very high and stable output
power, very high efficiency, an
extremely high level of audio
performance and extremely low
weight.
They are therefore the ideal drivers
for professional touring and high-
end concert sound, as well as pro
sound, applications. Through the
use of IRIS-Net-compatible remote
control modules, they also offer
extensive remote supervision and
control functions as well as a uni-
versal two-channel digital controller
including ultra-precise FIR filtering
and digital algorithms to protect
“all in all, a perfect comBination, in which it is eviDent from
every Detail that the Developers knew exactly what a high-enD
power amplifier for the professional touring anD installation
market neeDs.”
PowerH 5000 test in `Production Partner` 10/2007
16
the loudspeakers. DYNACORD power
amplifiers are known for their
absolute reliability under the most
arduous of conditions on the road.
Naturally this is also true of the
PowerH models.
In addition to the legendary manu-
facturing quality that comes with
the ‚Made in Germany‘ label, the
comprehensive set of protective
circuits plays an important role
here: an integrated micro-controller
coordinates tried-and-tested
protections against short-circuit,
HF or DC at the output, back EMF,
overheating and open-circuit opera-
tion, the power-up current limitation
and dynamic audio limiters as well
as making additional new and high-
ly intelligent protective functions
possible: for example, the tempe-
rature in the power amplifiers is
monitored at no fewer than six dif-
ferent points and the front-to-rear
ventilator governed accordingly.
Under abnormal thermal ‚worst
case‘ conditions, the CPU activates
a voltage limiter or gain reduction
depending upon the requirements of
the situation, so as to obviate the
need for a thermal shutdown of
the power amplifiers. All corrective
measures are indicated by LEDs on
the front panel and detailed clearly
on the liquid crystal display. In
addition, a report is created making
it possible to enquire later as to all
such ‚interventions‘, each of which
is time-stamped.
The mains voltage is monitored
and displayed continuously, with
the devices adapting automatically
to 230 V, for example, or 120 V. At
the same time, the mains current
consumption is also monitored and
displayed. The trip value of the au-
tomatic circuit breakers can be set
by the user via the display of the
power amplifier to prevent the cir-
cuit breakers tripping. Any short-