Nexo GEO S8 - Manual (Page 10)

P.10 GENERAL SET-UP INSTRUCTIONS
Some examples:
Gain
Vin
20dB 26dB 32dB 37dB (1.4V sensitivity / 1350Wrms)
0.1V 1V 2V 4V 7.1V
0.5V 5V 10V 20V 35.4V
1V 10V 20V 40V 70.8V
Remember that constant sensitivity settings will give a different gain value when the amplifier power is
different.
Gain value
NEXO recommends low gain amplifiers: +26dB is recommended, as it is at the same time adequately low and
quite common amongst amplifier manufacturers. This gain setting improves signal to noise ratio and allows all
preceding electronic equipment, including the NX242 TDcontroller, to operate at optimum level. Remember
that using a high gain amplifier will raise the noise floor proportionally.
Advanced protection
Some high-end amplifiers may include signal processing functions similar to those found in the NX242
TDcontroller ("loudspeaker offset integration", "limiter", "compressor," etc.). These functions are not adapted to
specific system requirements and may interfere with the complex protection algorithms used in the NX242.
NEXO do not advise using other protection systems in conjunction with the NX242 and they should be
disabled.
Connection Diagrams
The NX242 TDcontroller provides two basic modes of operation with GEO S8 Series products, as shown
below.
1) Stereo GEO S8 with no CD12 sub,
2) Mono GEO S8 with CD12 Sub.