Background Noise; Cleaning - Ecler HAK380 Bedienungsanleitung

5.3. Background noise

The use of active circuitry can yield, depending on the configuration, to a significant noise level.
The HAK mixer has been designed for the minimum possible noise. Anyway, the noise level will always
depend on the correct use and installation of the mixer. It is not the same setting up the FADER at "2"
and the MASTER at "10" that the other way round; FADER at "10" and MASTER at "2". In the first case
you get a poor signal to noise ratio that will be fully amplified by the master while on the second we have
a good signal to noise ratio only amplified by "2". As a result, the background noise is greater in the first
case than in the second one.

5.4. Cleaning

The front panel should not be cleaned with dissolvent or abrasive substances because silk-
printing could be damaged. To clean it, use a soft cloth slightly wet with water and neutral liquid soap;
dry it with a clean cloth. Be careful that water never gets into the amplifier through the holes of the front
panel.
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