SoundCraft Spirit Live 3-2 - Manual (Page 9)

Page 7
STEREO INPUTs, STEREO RETURNS
Accept 3-pole `A’ gauge 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 processing units. The input is BALANCED for low
noise and immunity from interference, 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 plug-
ging into the Left jack only.
Mix INSERTS, MONO INSERT
The unbalanced, pre-fade insert points are a break in the output signal path to allow
the connection of, for example, a compressor/limiter or graphic equaliser. The Insert is
a 3-pole ‘A’ gauge jack socket which is normally bypassed. When a jack is inserted, the
signal path is broken, just before the mix fader.
The mix signal appears on the TIP of the plug and is returned on the RING. A ‘Y’
lead may be required to connect to equipment with separate send and return jacks as
shown below:
Left Signal
Right Signal
Ground
Headphones
Signal +
Signal -
Screen
Signal Send
Signal Return
Gnd/Screen
Tip
Ring
Sleeve
Mix & Mono Inserts
Mix Outputs
Mono Output
Aux Outputs
1. Screen
3. Signal -
2. Signal +
MIX & MONO OUTPUTS
The Mix and Mono outputs are on 3-pole XLR sockets, wired as shown on the left
and below, and incorporate impedance balancing, allowing long cable runs to balanced
amplifiers and other equipment.
Send to External Device
Signal Send (Tip)
Tip
Tip
Sleeve
Sleeve
Screen
(Sleeve)
Signal Return (Ring)
Insert Point
Return from External Device
(a) Balanced Connection
To External Device Signal
Signal
Screen
Screen
Signal Ground
Signal Ground
Experience has shown that sometimes it is better
not to connect screen at external device end.
From LIVE 3 2
Impedance Balanced
Output
From LIVE 3 2
Impedance Balanced
Output To External Device
(b) Unbalanced Connection
USERMAN.QXD 13/06/97 12:27 Page 7