Drawmer MXPRO-30 Manual do operador - Página 5
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The MX30 is designed for standard 19" rack mounting and occupies 1U of rack space.
Avoid mounting the unit directly above power amplifiers or power supplies that radiate
significant amounts of heat. Fibre or plastic washers may be used to prevent the front
panel becoming marked by the mounting bolts.
Input and Output connections are provided for use at +4dBu via balanced XLRs or at
-10dBu via unbalanced jacks. It is permissible to use both +4dBu and -10dBu outputs
simultaneously. If unbalanced operation at +4dBu is required, simply connect the
unused terminal to Ground inside the XLR cable plugs. This applies to both inputs and
outputs. The wiring convention for XLR being: pin 1 Ground, pin 2 Hot and pin 3 Cold.
For use with unbalanced systems, the Cold pin 3 must be grounded at both input and
output XLRs.
Interference:
Ground Loops:
Level Conversion:
INSTALLATION
AUDIO CONNECTIONS
If the unit is to be used where it maybe exposed to high levels of
disturbance such as found close to a TV or radio transmitter, we
suggest that the unit be operated using the XLR connectors. The
screens of the signal cables should be connected to the chassis
connection on the XLR connector as opposed to connecting to
pin1. The MX30 fully conforms to the EMC standards.
If ground loop problems are encountered, never disconnect the
mains earth, but instead, try disconnecting the signal screen on
one end of each of the cables connecting the outputs of the MX30
to the patchbay. If such measures are necessary, balanced (XLR)
operation is recommended.
It is possible to apply an input to the MX30 at only one of the two
possible levels, say 10dB via the jack socket, and utilise both of
the output levels and cable options of
simultaneously.
One useful example of this connection option would be if the unit
was used to process a keyboard - commonly these have an output
level of 10dB, and are terminated with jack sockets. It is feasible
using the MX30s dual output capability to use the 10dB jack input
to feed from the keyboard and the 10dB output onwards to the
amplifier, and the +4dB balanced XLR connector for a direct feed
to the mixing console. This removes the need for any DI box or
cable splitter. In this example, ground loop considerations may be
required.
3
10dB and +4dB