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17Soundcraft MFXi MPMi User Guide Issue 1210
A ‘Y’ lead may be required to connect to equipment with separate send and
return jacks as shown below:
Stereo Inputs STEREO 1/2
These accept 3-pole 6.35mm (1/4”) jacks, or 2-pole mono jacks which will
automatically ground the ‘cold’ input. Use these inputs for sources such as
keyboards, drum machines, synths, tape machines or as returns from process-
ing units. The input is BALANCED for low noise and immunity from interfer-
ence, but you can use UNBALANCED sources by wiring up the jacks as shown,
although you should then keep cable lengths as short as possible to minimise
interference pick-up on the cable. Note that the ring must be grounded if the
source is unbalanced.
Mono sources can be fed to both paths by plugging into the Left jack only.
Mix Outputs
The MIX outputs are on XLR’s, wired as shown, and incorporate
impedance balancing, allowing long cable runs to balanced ampliers and
other equipment.
Aux and FX Bus Outputs
The Aux and FX Bus outputs are on 3-pole 6.35mm (1/4”) jack sockets,
wired as shown on the left, and are impedance-balanced, allowing long
cable runs to balanced ampliers and other equipment.
Headphones
The PHONES output is a 3-pole 6.35mm (1/4”) jack, wired as a stereo
output as shown, ideally for headphones of 32Ω or greater.
8Ω headphones are not recommended.
From
Impedance-Balanced
Output
Signal +
Signal +
Screen
Screen
Signal -
Signal -
To External Device
To External Device
Experience has shown thatsometimes it is better
not to connect screenat external device end.
Balanced Connection
Unbalanced Connection
From
Impedance-Balanced
Output