RAY SUB IMPLEMENTATION
System Manual RS Series Page 53 / 76
7.7 RS System Check List
It is essential to execute all these check steps prior to perform 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.
Are the speakers properly connected?
Attach the first series of modules to the bumper.
Before flying, verify that all channels of all modules are functioning properly.
Make sure that each RS driver is producing proper summation in omni mode:
• the two RS individual driver should sum up by 6 dB
• doubling RS quantity (2, 4 and so on) should also produce 6 dB gain.
Make sure that each RS is producing the proper front/rear summation in directional mode:
• when listening from behind the system, switch the front drivers in and out. You should hear a reduction in the LF
range when the both front and rear drivers are on as compared to when the rear drivers only are on
• when listening from the front, you should hear a strong increase in the LF range when connecting the rear drivers
Raise the bumper, attach the next series of modules and repeat the above checks.
Make sure that these series of modules sum properly with the modules above them.
Final Pre-Sound Check Check
Play a CD track (preferably generous and periodic in the LF content) on the SUB output, mono left, mono right and then
both sides:
• both sides must sound strictly identical when listening at the center;
• level must not decrease at the center when playing left and right simultaneously as opposed to one side only.
Play the same CD track on the MAIN system, on the SUB system, then on both:
• inverting polarity on one of these outputs – MAIN or SUB - should always result in a massive difference near the
crossover point.
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