Operation Manual
5. Operation and performance
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C SERIES Operation Manual rev 2.0.0
5. Operation and performance
5.1. Introduction
The following sections provide comprehensive information on amplier connection, setup, operation, and
performance. The detailed information included here is essential to realizing the full functionality of the C Series
ampliers.
5.2. Operation precautions
• Make sure that the Power switch and the Remote switch on the amplier front-panel are set to “off” before
making any input, output or network connections, and also before manipulating the DIP-switches on the
rear panel.
• This amplier is equipped with a Universal Power Supply that handles voltages from 100 V to 240 V (+/- 10%)
@ 50-60 Hz
• Make sure that no signal is present at the input to the amplier when powering up. This could produce an
unintentionally loud initial volume from the speakers.
5.3. Signal flow and headroom
5.3.1. Signal flow blocks
All C Series ampliers have the same signal ow and feature set. The only difference is the amplier’s maximum
output current per channel.
The input stage of all C Series ampliers has a high sensitivity to provide ample system headroom. This in effect
means that the input stage is almost impossible to clip.
Overall amplier input gain is adjusted using the input stage DIP-switches. Please note that the gain setting is
global, affecting all channels. Following the input stage, the dedicated level control on each channel allows signal
attenuation from 0 dB to -innity.
The CPL (Current Peak Limiter) section dynamically limits the input signal based on three parameters: sensed
current level, feedback from the output stage, and sensed voltage clip from the VPL (and output amplier voltage
clip if “Soft Clip” activated). This ensures that power output is maintained within the design limits of the amplier.
The adjustable VPL (Voltage Peak Limiter) sets the maximum channel output voltage and therefore also the
maximum channel output power. Four different voltage stages are available using the DIP-switches on the rear
panel.
The sophisticated output section monitors faults and generates appropriate warnings, which are displayed on
the amplier and transmitted through the NomadLink network. These alerts allow the operator to adjust system