Owner's Manual

Page 72/112 NEXO ANALOGUE GEO S12TD CONTROLLER
• High CMRR input stage and High current drive output
• Compensation of power compression effects on the system response curve.
The Analogue TDcontroller is designed to be inserted between the Audio source (console, preamplifier,
etc.) and the power amplifier.
9.4.2 Front Panel
Most front panel functions and indicators are located inside 2 distinct windows: left-hand areas relate to
functions and indicators dedicated to the optional Sub-bass section, while right-hand window contains
indicators concerning servo control operation for the S12 cabinets.
For more technical details about servo control operation and internal electronic processing, please refer
to section “TDcontroller REFERENCE GUIDE.” Page 74.
Turning the LS channel Overlap / Crossover
Pushing the CONFIGURE button
modifies the high pass filtering. It
does not affect the sub output, which
will always be a filtered sub signal.
(This is therefore not a Sub on/off
button). In the « Overlap » position,
the S12 is exploited to its maximum
capability.
This position should be used if the system is being used without a Subbass. It can also be used with the
Subbass; In this case, there will be a boost in the crossover area. The « Cross over » position is
generally recommended when using the Subbass.
Adjusting the Subbass level (Sub Level)
The potentiometer adjusts the level of the
Subbass channel, a range of 12 dB allows a
variety of configurations and application
conditions to be accommodated. Center
position of the knob is calibrated for 1
Subbass used with 2 distant S12.
Amplifier & Protection indicator
The bicolor green/red AMP LED indicates signal
presence at the sense input of the concerned
channel, allowing visual confirmation of the return
connection of the Sense cables from the amplifier
output. The LED is flashing red, when the Peak
limiter is acting, reducing excessive peak voltage
or levels capable of overloading the channel
amplifier.
• The yellow VLF LED indicates that displacement protection for the Subbass are engaged on the
SubBass channel. The temperature protection is not monitored.
• On each side of the S12 main system window, yellow TEMP and DISP LEDs indicate when
protection has been activated (temperature or displacement control) for the LF (the HF drivers
temperature protection is not monitored).
Peak Limiter adjustments
The Analogue TDcontroller features two independent peak limiter trims (one for the LSsub amplifier
section, one for the S12 amplifier section), which allows the peak limiter to be set to limit the maximum
power of the amp (without affecting the protections threshold). The peak limiter has no real cabinet
protection functions; it must be tuned to avoid overdriving the amp that in turn can generate obvious
clipping noise.