RS15
S
YSTEM
C
HECK
L
IST
Page
45/58
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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;
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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.
9.5 Final Pre-Sound Check Check
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Play a CD track (preferably generous and periodic in the LF content) on the SUB output, mono
left, mono right and then both sides:
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both sides must sound strictly identical when listening at the center;
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level must not decrease at the center when playing left and right simultaneously as opposed to
one side only.
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Play the same CD track on the MAIN system, on the SUB system, then on both:
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Inverting polarity on one of these outputs – MAIN or SUB - should always result in a massive
difference near the crossover point.
