Operation Manual

13
STEREO RETURNS RET-1/2/3/4
These accept RCA phono jacks to allow easy connection to hi-fi equipment or DAT
players. The input is unbalanced, and ideal for pre-show music sources or signals that
do not require any EQ or effects. These can also be used as effect returns using cables
described later in this document.
STEREO INPUTS STE-1/2/3/4
These 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 plugging into the Left jack only.
MIX INSERTS
The unbalanced, pre-fade Mix insert point is 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:
MIX & SUB OUTPUTS
The MIX and SUB outputs are on 3-pole ‘A’ gauge jack sockets, wired as shown, and
incorporate impedance balancing, allowing long cable runs to balanced amplifiers and
other equipment.