Dynacord 1000-3, 2200-3, 1600-3 owner manual Stereo Power Amplifier, Tap

POWERMATE3

71 - 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 32 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 31.

Illustration 2-19: Frequency plot of LPN filters for settings High, Medium or Flat

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The Speaker Protection function provides the possibility to optimally match the PowerMate to your speaker setup. Speaker Protection is based on a sophisticated overload protection, which is usually only found in power amplifiers of the absolute top class. Integrated control algorithms continuously monitor the effective power (RMS) that is delivered to the loudspeaker systems. If the set value is exceeded over an extended period of time, a subtle limitation of the power peaks will take place to avoid thermal overload of the voice coils. For notes on the setting of this function, please refer to page 32.

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