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GEO
D
–
GEO
SUB
A
RRAY
S
YSTEM
C
HECK
L
IST
only are on. When listening from the front, you should hear a strong increase in the LF range
when connecting the rear drivers.
•
To check that all front elements have the proper amplitude and phase, you should listen to the
upper boxes at a close distance (<1 meter). You should be able to move from the top to the
bottom of the cluster without hearing any change in the tonal balance.
•
Verify that the angle settings are the same on both sides of each module.
•
Raise the bumper, attach the next serie of modules and repeat the above checks.
•
Make sure that these serie of modules sum properly with the modules above them.
•
When all the modules are flown, check that the aiming angles are the same left and right.
•
Make sure that multiple GEO D’s and GEO SUB’s are summing properly: 6 dB gain per doubling
of quantity.
8.5 Final Pre-Sound Check Check
Play a CD track mono left, and then right : both sides must sound strictly identical. When listening in the
center between two GEOD / GEO SUB’s, everything from LF to HF should be located to the “phantom
center” position. If not, repeat the above check sequence to identify the source of the problem.
