User guide

RS18 SYSTEM CHECK LIST Page 43/54
8 RS18 SYSTEM CHECK LIST
It is essential to execute all these check steps prior to a sound check on the “front end” to the system.
Following this checklist step by step will prevent many troubles and will save time in the end.
8.1 Are the NX Digital TDcontrollers properly configured?
IMPORTANT
If you must change any of the parameters listed below, make sure that you use the same
values on all NX’s.
Output Assignment
NX Setup / NXChannel 1 2 3 4
RS18 4 Channels Omni Mode RS18-1 RS18-2 RS18-3 RS18-4
RS18 Stereo Directional Mode RS18 Rear Left RS18 Front Left RS18 Rear Right RS18 Front Right
Output parameters
Output
Label
Amp
Gain (2)
Amp
Power (2)
Global
Gain
Global
Delay
Sense
Gain
Array EQ
(3)
Headrom
(4)
All channels 26 dB refer to amp 0 dB 0 ms 0 dB 0 5 bars
(1) Local gain and delay values are inter-locked on channel 1&2 and 3&4 in Directional Mode
(2) values for recommended amplifier gain and power : should be set in agreement with selected
amplifiers specifications
(3) Should be in agreement with implemented cluster; acts on a shelving filter designed to compensate
for LF coupling.
(4) Disabled when using digital inputs.
8.2 Are the amplifiers properly configured?
Freq. Band Mode Gain Switch Limiter High Pass
All channels
Stereo 26 dB None None
8.3 Are the amps and the NX properly connected?
Check that the sense lines on the NX’s are properly connected by applying a signal to the
corresponding output and verify that the correct Sense LED illuminates.
8.4 Are the speakers properly connected?
• Attach the first serie of modules to the bumper
• Before flying, verify that all drivers of all modules are functioning properly.
• Make sure that each RS18 driver is producing proper summation in omni mode:
• The two RS18 individual 18” driver should sum up by 6 dB;
• Doubling RS18 quantity (2, 4 and so on) should also produce 6 dB gain.
• Make sure that each RS18 is producing the proper front/rear summation in directional mode: