12
Unbalanced use of
mono 1/4" jack plugs
Ring
Balanced use of
stereo 1/4" jack plugs
Balanced use with XLR connectors
1 2
3
2 1
3
Input Output
Tip =
Signal
Tip =
hot (+ve)
Sleeve =
Ground / Shield
Sleeve =
Ground / Shield
Tip
Tip
Sleeve
Sleeve
Strain relief clamp
Strain relief clamp
Ring =
cold (-ve)
For connection of balanced and
unbalanced plugs, ring and sleeve have
to be bridged at the stereo plug.
1 = Ground / Shield
2 = hot (+ve)
3 = cold (-ve)
For unbalanced use pin 1 and pin 3 have to be bridged
Fig. 6.3: Different plug types
7. SETTING UP
7.1 Selecting inputs
1) Mono Channels accept mic or Line Inputs. If you are using the Mic Input, make sure nothing is connected to
the Line Input (and vice-versa).
The Mic Inputs are more sensitive than the Line Inputs. Do not connect mics with Phantom Power switched on.
Never use unbalanced mic cables with the Phantom Power switched on ever! Shorting the +48 V to earth can
cause serious damage.
2) Stereo Channels accept any line level signals. Any stereo channel can be run in mono simply by connect-
ing into the left jack socket only. These channels are suitable for a variety of line-level sources including MIDI
instruments and Tape Returns from multitrack.
3) Stereo Aux Returns are primarily designed for returning effects units, though these too may be given over to
tape returns or MIDI instrument outputs.
7. SETTING UP
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