Stereo Power Amplifier - Dynacord PowerMate3 Owner's Manual

3
P M
OWER ATE
Menu mode
Press the MENU/ENTER rotary encoder in effect mode to enter the menu mode. In menu mode the display indicates the
function being executed for each function key.
53 - MENU/ENTER
Use the MENU/ENTER rotary encoder in menu mode for menu navigation. In effect mode the MENU/ENTER rotary en-
coder has no function.
54 - TAP
If a delay effect is used the delay time can be adjusted to the beat by pressing the TAP button multiple times. The yellow
LED indicates the delay time set. The function of this button can be configured using the TAP Button Ctrl. parameter,
please refer to the section "FX Control Setup" on page 26 for details.

2.8 Stereo Power Amplifier

The PowerMate has a high performance power amplifier in modern, high-efficient Class-D technology, which provides a
nominal power output of 2 x 1000 watts RMS into 4 ohms with minimal waste heat. The minimal load impedance of 2.7
ohms allows the operation with a maximum of three 8 ohms loudspeaker systems connected in parallel to each output
channel without problem. The audio performance is on highest professional level.
The entire power supply is taken care of by a switching power supply unit that is extremely stable under load, which,
when compared to conventional toroidal transformers, provides a substantial reduction in weight. The switching power
supply is controlled by a microprocessor, both, to ensure that high output can be accessed at any time, but also to pro-
vide comprehensive protection functions against capacitive and thermal overload. Another advantage is the automatic
mains voltage switching, which guarantees virtually worldwide use of the PowerMate without reconfiguration. In addi-
tion, a surge protector is incorporated, and an inrush current limiter (soft start) prevents the mains fuse from res-
ponding when powering on the mixer.
Designed to withstand even the rigors of the touring business, the output stage of course incorporates all the protective
circuits that DYNACORD power amplifiers are well-known for. Both outputs are separately monitored, so that in case of
error, only the affected channel is switched off. When switching on the mixer, activation of the power outputs is delayed
to avoid possible switching noise.
Two low-noise, variable-controlled fans ensure the thermal stability of the PowerMate. Front-to-rear airflow allows ope-
ration in large and narrow rack systems as well. In addition, the PowerMate employs a unique processor-controlled ther-
mal limiter. In the event of imminent thermal overload, a „musically working" clip-limiter will limit only the power peaks
of the music signal. This effectively prevents the complete shutdown of the power amplifier, without noticeable reduc-
tion in the overall sound level.
The power amplifier channels of the PowerMate incorporate Low-Pass-Notch filters (LPN) exclusively designed by DY-
NACORD. Together with a 12dB Hi-Pass filter, these Low-Pass-Notch filters eliminate faults in the transient response of
typical PA-loudspeaker systems and grant your setup an extraordinarily precise and powerful bass response. The LPN
filters can be configured via the menu, see page 25.
Illustration 2-10: Frequency plot of LPN filters for settings High, Medium or Flat
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20 50 100 200 500 1k 2k 5k 10k 20k
Hz