Theta Digital Casablanca II, Руководство пользователя

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Figure 35 - Front Panel Display of the SETUP / INP / DELAYS 1 Sub Menu
Press SETUP , input ( INP ) then delays ( DLYS ) to access the speaker delays setup sub menu shown in figure 35. The
current delay settings will be displayed on the top row of the LCD. Additionally, the sub menu title “ DELAYS ” will be
displayed in the upper right corner. All delay settings apply to all MODES , however, they can be further manipulated
when the current MODE is either Dolby Digital, DTS or Circle Surround, via additional Setup submenus for these
MODES . These additional Setup features and respective sub menus are discussed further in this section.
The first time a multi channel audio system is set up in a room, calibration of time delay [and speaker levels] is required
in order to have the sound from each individual speaker reach the listener at the correct time.
If more than six DAC channels are installed in the Casablanca II, there will be a right arrow above the A-D button,
indicating that by pressing this button, a second Delay page will be presented as shown in figure 36.
Figure 36 - Front Panel Display of the SETUP / INP / DELAYS 2 Sub Menu
Center speaker delay is required if the center speaker is closer to the listening position than the front left and right.
When this is the case, the center delay time should be 1mS for each foot closer.
The same rule applies for all other speakers that are a different distance from the
listening position than the front left/right speakers and the same rule of thumb
applies: their delay time should be 1mS for each foot closer than the front
left/right speakers. This is assuming that the front left speaker is the same
distance from the listening position than the front right.
Begin by measuring the distance (in feet) from each speaker to the listening
position. Write down all of these values. Ideally, the front left/right and center
speakers will all be the same distance to the listening position. In this case, set
the front left/right and center speaker delays to 0mS. If the center speaker is
closer, then delay it. The delay value should be 1mS for each foot of difference
between the center and front left/right, to the listening position. If the front
left/right speakers are closer than the center, then set the center delay at 0 and
delay the front left/right speakers, again, 1mS for each foot of difference from the
listening position.
Figure 37 - Rear Delay Settings
To determine a delay time for the surround left/right speakers, measure the distance (in feet) from the listening position
to the front left/right, then from the listening position to the surround left right. Subtract the two numbers and use this
value to add to the existing delay value of the surround left/right speakers. (1 mS/foot). The chart in figure 37 can also
be used to calculate the surround left/right delay values.
For the surround center delay, take the difference (in feet) between the center surround speaker and the listening
position and the surround left or right to the listening position. With this value, add it to the existing [default] surround
center delay value (1ms per foot of difference).
To set the side speaker delays, 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.