General Precautions; Handling And Transport; Signal Levels - SoundCraft MH3 User Manual

MH3 User Guide
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General Precautions

Avoid storing or using the mixing console in conditions of excessive heat or cold, or in positions
where it is likely to be subject to vibration, dust or moisture. Do not use any liquids to clean the
fascia of the unit: a soft dry brush is ideal. Use only water or ethyl alcohol to clean the trim and
scribble strips. Other solvents may cause damage to paint or plastic parts.
Avoid using the console close to strong sources of electromagnetic radiation (e.g. video monitors,
high-power electric cabling): this may cause degradation of the audio quality due to induced
voltages in connecting leads and chassis. For the same reason, always site the power supply
away from the unit.
Caution! In all cases, refer servicing to qualified personnel.

Handling and Transport

The console is supplied in a strong carton. If it is necessary to move it any distance after
installation it is recommended that this packing is used to protect it. Be sure to disconnect all
cabling before moving. If the console is to be regularly moved we recommend that it is installed
in a foam lined flightcase. At all times avoid applying excessive force to any knobs, switches or
connectors.
Power Supplies & Cables
Always use the power supply and cable supplied with the mixer: the use of alternative supplies
may cause damage and voids the warranty; the extension of power cables may result in
malfunction of the mixing console.
W a r n i n g ! Always switch the power supply off before
connecting or disconnecting the mixer power cable, removing
or installing modules, and servicing. In the event of an
electrical storm, or large mains voltage fluctuations,
immediately switch off the PSU and unplug from the mains.
W a r n I n g ! Always ensure that you use the correct PSU

Signal Levels

It is important to supply the correct input levels to the console, otherwise signal to noise ratio or
distortion performance may be degraded; and in extreme cases, damage to the internal) circuitry
may result. Likewise, on all balanced inputs avoid sources with large common mode DC, AC or
RF voltages, as these will reduce the available signal range on the inputs. Note that OdBu
=0.775V RMS.
Refer to the Specifications section for details of input and output levels.
Preliminary Issue
(CPS800) for your mixer.
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