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Po w e r H se ri e s
17
circuits at the output of the power
amplifier are detected early on,
even at low levels. The protective
circuit is activated and a report on
the fault in question appears simulta-
neously on the front display. In the
event of excessive high-frequency
overload, there is an automatic level
reduction to protect the power
amplifier itself and also the loud-
speaker components connected.
The large, background-lit liquid
crystal display delivers comprehensive
status information, error reports
and measurements as well as
allowing you to control the basic
settings and (with the IRIS-Net
module integrated) select presets
as well.
In addition to extreme reliability
and forward-looking operating
security, the PowerH power amplifiers
are impressive for their outstanding
audio performance. The THD,
intermodulation distortion (IMD-
SMPTE) and dynamic intermodulation
(DIM) are well below 0.05% and
therefore well below the limit of
audibility. All the components of
the switching power supply are so
safely dimensioned that they are
capable of delivering the maximum
peak output current of 70 A conti-
nuously (H 5000), thereby allowing
the power amplifier to operate
as a stable voltage source even
with extremely low loads. PowerH
power amplifiers therefore have
a significant amount of headroom
at their disposal, which results in
superlative dynamics even with
low loads.
PowerH power amplifiers leave
nothing to be desired in terms of
connectivity. For the inputs, XLR
IN/parallel OUT sockets are provided
along with additional Phoenix
connectors. The input sensitivity is
switchable between 0dBu, +6dBu
and 32dB Constant Gain. In addition,
there are switches for Bridged
Mode and Parallel / Dual as well,
naturally, as a Ground Lift switch.
A latching PowerCon connector
is provided for the mains power
line, which prevents the plug
being yanked out accidentally. The
power outputs are implemented
as Speakon sockets. The signal of
Output B is additionally available on
pins ±2 of Output A, so that with
4-pin wiring a two-way system can
be driven. Parallel to these, additio-
nal binding posts are provided. In
terms of connectivity, therefore,
PowerH power amplifiers satisfy
all the demands of both mobile
applications and pro audio fixed
installations.
German engineering. Manufactured
in accordance with the Bosch
Production System (BPS) in Straubing,
Germany.