Theta Digital Casablanca II, Owner'S Manual

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m) Activate noise in Sub 4, if configured into the system, and point the SPL meter toward the sub woofer, if
present in the system. Adjust the SUB level until the SPL meter reads 75dB.
n) Activate noise in Sub 5, if configured into the system, and point the SPL meter toward the sub woofer, if
present in the system. Adjust the SUB level until the SPL meter reads 75dB.
o) Deactivate the noise generator with the A-D button.
Speaker Delays
11) With Input # 1 selected, go to the DELAYS submenu.
a) If the center speaker is closer to the listening position than the front left and right speakers and cannot be
brought to within the same distance of them, leave the front left and right delays at 0 and adjust the CEN
(center) delay so that its sound arrives at the listener at the same time as the front left and right speakers.
The delay value should be 1mS for each foot difference.
b) If the center speaker is farther in distance from the listening position than the front left and right speaker,
then set the CEN (center) delay to 0 and adjust the front left and right speaker delays so that their sound
arrives at the listeners at the same time as the center speaker. The delay value should be 1mS for each
foot difference. Please refer to the
Delays section in the Owner’s manual for additional details regarding the
speaker delay feature and methods of calculating required speaker delay times.
c) If the center speaker is equal distance from the listening position as the front left and right speaker, set the
front left and right speaker and center speaker delays at
0
.
d) Using the chart and method contained in the Delays section of the Owner’s manual, calculate the delay
times for the left and right surround speakers.
The center and surround delays in this submenu will affect the center and surround speakers only when the MODE
is not Dolby Digital, DTS or Circle Surround. The center and surround delays must be set up separately if the
MODE is either Dolby Digital, DTS or Circle Surround.
Speakers in a typical 5.1 system
e) Typically the center surround speaker is closer to the listening position than the surround left/right speakers.
In this case, it must be delayed so that the sound from all of the surround speakers reaches the listener at
the same time. Calculate the difference (distance in feet) between the center surround and one of the
left/right surround speakers, to the listening position. Add this difference to the value already set for the
left/right surround speakers and use this sum to set the delay value for the center surround speaker. (1 mS
per foot of difference).
f) Calculate the difference (distance in feet) between the left side and left front speakers. Add the difference to
the default value already set for the left side to give this speaker its new value.
g) Calculate the difference (distance in feet) between the right side and right front speakers. Add the difference
to the default value already set for the right side to give this speaker its new value.
h) Because of their low frequency properties, typically a delay in the subwoofer(s) is virtually undetectable. This
being the case, it may be appropriate to leave the subwoofer delay values set at 0. However, if any
subwoofer is closer to the listening position than the front left/right speakers, a delay value can be set for
these subs. The delay value will be the difference (in feet) between the sub itself and the front left or right
speaker, to the listening position.