Theta Digital Casablanca IV Owner'S Manual Download

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Step by Step Speaker Configuration

Casablanca IV provides a comprehensive set of speaker configuration settings. With the inclusion of Dirac Live® 96
kHz, these settings should allow any speaker to perform optimally regardless of speaker type. The following procedure
is merely a guideline: room acoustics, speaker design/quality, music/film type, and personal preferences all have a part
in these settings.

Using the Setup menu map diagram [Figure 11] on page 18 in this manual is recommended.

There are four major steps to setting up your Casablanca IV. In recommended sequence, they are:

Individual speaker levels:

compensates for different speaker and amplifier efficiencies.

Delays:

compensates for different speaker distances from the listening position.

Dirac Live®:

Measures the exact performance of each loudspeaker in the system and applies mixed phase IIR and FIR

filters to correct for non-optimum frequency and phase response and provides a guide for selecting crossover points.

Speaker Configuration & Crossovers:

permits proper signal routing in the Casablanca IV and proper blending of main

and subwoofer signals. Enables all speakers present in the system.

Input Specific Setup:

All parameters that are specific to an individual input select button.

Each step plays a pivotal role in the overall sonic performance and should receive equal attention and care in
adjustment.

Speaker Levels

Setting up the speaker levels is best accomplished by playing the supplied AIX test disc and an SPL meter. If the meter
has ‘weighting’ options, “C” is preferable.

10) With Input # 1 selected and your Blu ray player connected via HDMI, begin playing the Speaker Balance test tracks.

Go to the speaker levels submenu.

a) With the SPL meter placed in the main seating position pointing at the ceiling, play the track for the front left

speaker and bring up the master volume (using the

LEVEL LEFT

button) until the SPL meter reads 70 dB.

b) Repeat this procedure for the center speaker using the

CNTR

level control.

c) Play the track for the front right speaker and, with the SPL meter in the same position, adjust the

RGHT

speaker level up/down until the SPL meter reads 70 dB.

d)  Play the track for the left surround speaker and adjust the level until the SPL meter reads 70 dB.
e)  Play the track for the right surround speaker and adjust the level until the SPL meter reads 70 dB.
f)  Play the track for the left back speaker and adjust the level until the SPL meter reads 70 dB.
g)  Play the track for the right back speaker and adjust the level until the SPL meter reads 70 dB.
h)  Play the track for subwoofer adjustment.  With the subwoofer level trim on the Casablanca IV set to “0”, use

the volume control on the powered subwoofer to adjust the SUBWOFFER output until the SPL meter reads
76 dB.

i) If the system has more than a single subwoofer, using each subwoofer individually, repeat step “h” above

to set the level for each subwoofer in the system to an indicated 76 dB on the SPL meter.

j) If the system has more than a single subwoofer, you must adjust the SUBWOOFER output level on the

Casablanca IV to compensate for the additional subwoofer output. If you are using Dirac Live®, make these
level adjustments

after

Dirac Live® calibration.

k)  With two subs set the SUBWOOFER output level for each subwoofer to -3 dB
l)  With 3 subwoofers, set the SUBWOOFER output level for each subwoofer to -4 dB
k)  With 4 subwoofers, set the SUBWOOFER output level for each subwoofer to -5 dB.
l)  With 5 subwoofers, set the SUBWOOFER output level for each subwoofer to -6 dB.

Speaker Delays

11) With Input # 1 selected, go to the

DELAYS

submenu.

a) Using a tape measure, measure the distance between the principal listening position and the center of each

speaker. Write down the distances.

b) Enter the measured distances to the nearest foot from the primary listening position to each speaker. Your

Casablanca IV will automatically adjust the delays to assure simultaneous arrival of sound from each channel
at the primary listening position.