Pronomic HP-2000 Operating Instructions Manual page 6

Pronomic HP-2000 Power Amplifier
5. Filter switch
This switch allows you to select the filter type for each channel (A and B).
Off = No filters
High Cut = low pass filter. The amplifier outputs the frequencies that are lower than the cut-off
frequency set with the frequency controller.
Low Cut = high pass filter. The amplifier outputs the frequencies that are higher than the cut-off
frequency set with the frequency controller.
If you select "High Cut" or "Low Cut", you can use the frequency controller to adjust the crossover
frequency. The setting range is between 25 Hz and 150 Hz. When the amplifier is in Bridge mode,
only the Channel A switch and knob are active.
6. Processing switch
To better illustrate the function of the Processing switch, please refer to the diagram on the next page.
When the Processing switch is in the "ON" position, 6dB is raised to 60 Hz.
If you move the Processing switch to the "Off" position, the signal is looped directly through. The filter
switch mentioned under point 5 has no function in this position.
7. Mains connection
Use this cable to supply power to the power amplifier.
8. Loudspeaker output
Use these Speakon compatible connectors to connect to external speakers.
9. Balanced channel inputs (Input) and channel outputs (Output)
These XLR jacks are balanced. You can parallel this power amplifier with other amplifiers by
outputting the signal through the Output jacks to the input terminals of the other amplifier. Balanced
connections are recommended as they are less susceptible to AC hum. For long cable runs, an output
impedance of less than 600 ohms is required to avoid signal loss. For stereo operation, inputs CH-1
and CH-2 are used, while for bridged mono operation, only input CH-1 is used.
10. Mode selector switch
These switches on the rear of the unit allow the maximum achievable gain to be set directly in the
input stage. The output stage has a 0.77V and a 1.0V voltage gain setting as well as a 32dB sensitivity
setting.
You can choose between the two operating modes "Stereo" and "Bridged".
To do this, slide the switch to the appropriate position.
- Stereo Mode: This mode allows independent control of 2 separate signals, such as stereo playback,
main and monitor live mixes, and bi-amp operation (highs in one channel and lows in the other).
- Bridged Mono Mode: This mode combines the power of both channels to drive a single speaker.
Therefore, make sure in advance that the speaker, connections and cabling are suitable for this
power, otherwise damage may occur.
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