Background Noise; Cleaning - Ecler MAC55i Manual De Instrucciones

5.3. Background noise

The use of active circuitry can yield, depending on the configuration, to a significant noise
level. The MAC55i 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 control panel must not be cleaned with any dissolvent, abrasive or petroleum
derivated substance else paint and silk-printing could be damaged.
Whenever cleaning should be necessary use a soft cloth slightly wet with water and
neutral liquid soap or with a solution of water and alcohol at 50%. Be careful that no liquid gets into
the mixer. Never use sharp or erosive objects to scratch the control panel.
Should any liquid get into the mixer, do not use any cleaning sprays; send the unit to the
nearest ECLER Technical Service.
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