Owner's Manual

NEXO ANALOGUE GEO S12TD CONTROLLER Page 73/112
To set the peak limiter to the correct value, either turn the trimmer clockwise until the red LED lights at
the same time as the amp’s clipping LED, or use the graduation (power value given for 8Ωload).
9.4.3 Rear Panel
Audio Inputs
The audio inputs are two 3-pin female XLR connectors located in the area labeled BALANCED
INPUTS. Signal is applied between pins 2 and 3, pin 1 is connected to ground. When the Controller is
linked to a signal source with balanced outputs, the XLR connections are simply wired pin to pin (1 to
1, etc.). As a result of the balanced nature of the outputs (and providing that balancing is respected by
way of the connection to the amplifier), there is no hot or cold pin - the Analogue TDcontroller being
neutral regarding the polarity of the signal.
Output Level Switch
The 3-position output level switch is used to match the processor gain to the amplifier gain for
optimum signal to noise ratio. The three gain values available are +6, 0 or -6 dB. For minimum noise
floor the -6dB setting should be chosen, for maximum headroom the +6dB position should be used.
Audio Outputs
The audio outputs are the three 3-pin male XLRs located in the area labeled BALANCED OUTPUTS.
The channel corresponding to each output connector is identified by the labels Left, Right and Sub
L+R (mono SubBass).
Signal is applied between pins 2 and 3, pin 1 is connected to ground.
When used with an amplifier with balanced inputs, the wiring of the output XLR is simply pin to pin (1
to 1, etc.), the polarity of the signal being preserved if the source connected to the input is also
balanced (see previous section).
Sense inputs
The sense inputs of the three channels (left, right and SUB) are arranged on
a six-pole barrier strip set into the rear panel within the area labeled SENSE
INPUT. The Sense inputs are intended for connection to the output signals of
the amplifiers driving one cabinet of each the channels being used.
Connection is made via the female part - removable - of the connector
(supplied with the Controller) as outlined below:
Channel Amplifier Output Terminal Barrier strip connector
S12 Left - (black)
Ö
pin 1 (figure)
+ (red)
Ö
pin 2
S12 Right - (black)
Ö
pin 3
+ (red)
Ö
pin 4
RS15 - (black)
Ö
pin 5
+ (red)
Ö
pin 6
Input sense connection MANDATORY for proper operation of the servo-control system, the cabinets
will NOT BE PROTECTED if the sense lines are unconnected.
Earth Lift
The push button labeled « Earth Lift » allows connection
(depressed position), or disconnection (out position)
between the signal ground and the mains earth, which is
itself linked to the chassis. Using this button may help to
eliminate hum due to ground looS12 created in the
system.
Sub jumper
In certain applications you may wish to disable the mono summation (but keep the 6dB gain boost) on
the sub channel. By moving the internal jumper ST1 inside the unit, the sub channel will only use the
Right input (with 6dB gain to keep the same sub level when the mono summation is enabled).
BALANCED INPUTS
RIGHT LEFTRIGHT LEFTSUB L+R
OUPUT
LEVEL
+6dB
0dB
-6dB
BALANCED OUTPUTS
EARTH
LIFT
115-230V 50-60Hz 10W
CAUTION !
To reduce the risk of electric schock
grounding of the center pin
of this plug must be maintained.
MADE IN FRANCE
+ RIGHT - + LEFT -+ SUB -
SENSE INPUT
(from amp terminals)
CAUTION !
Sense line must be connected
for speaker protection.
10CE
PS8 TDcontroller
s.n: 03105
4004