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7
CONNECTING THE SR30
THX
SURROUNDS (CONT.)
For Seven-Channel Applications
Select the diffuse surround mode with the toggle switch.
Remove the gold jumper bars from the inputs.
Connect the two sets of speaker cable to the appropriate
7.1 channel inputs.
Optional Relay Control
If you have purchased an SR30
THX
with relay control (or an
upgrade kit), the speaker's default setting is "DIFFUSE-THX
ULTRA2 MODE" = 0 Volts
When a 12VDC control signal is applied, surround mode is
switched to "DIRECT MODE". Two unpolarized cables with .110"
terminals are provided at the rear for this purpose
Surround Processor Settings
When using a subwoofer:
Select the SMALL or NORMAL surround setting on your receiver
or processor. This routes all bass information (typically below
100Hz) from the surrounds to your subwoofer.
When not using a subwoofer:
Select the LARGE surround setting on your receiver or processor.
This routes all bass information to your surrounds.
Match the Sound Levels of Each Speaker
Your home theater system most likely includes a test signal that
simplifies level matching. Refer to the instructions provided with
your surround sound electronics.
Connecting with Bare Wire
Insert bare wire into holes and
tighten.
Connecting with Banana
Plugs, Spade Lugs, or Pins
The binding posts accept standard banana plugs and pins, and
can accommodate spade lugs up to 5/16 inch.
Warning! To prevent electrical shock, always switch off the
amplifier or receiver when making connections to the speaker
system.
SR30
THX
Operation and Use
The diffuse mode is most appropriate when the inability to local-
ize sound is desirable. This should be perceived as a ”wall-of-
sound.” Music with side channels encoded with hall effects will
produce a feeling of envelopment. Surround encoded baseball
games will be heard as if the stadium were all around, with no
clear source of off-the-field, realism-enhancing effects.
Both music and movies will have instances when either ”direct”
or ”diffuse” surround sound will suit. Music recordings with
musicians in the side channels will most likely sound best in
”direct” (refer to Fig. 1B). However, if the side channels are used
to record the performance environment or audience sounds, the
”diffuse” mode may be best.
Similarly, with movie soundtracks, some producers will use side
channels to pan discrete sources off-screen (e.g., jet fly-bys, etc.).
This material will be well served with the ”direct” mode. Other
movies will use the side channels to transport you to a remote
environment with street noises, crowd noises, etc. These may be
best reproduced in ”diffuse” mode.
The surround mode switch is conveniently located under the
right side of the grille to allow easy access. Swing the right side
of the grille outward to reveal the switch. It is located midway
up the cabinet within the matrix driver recess. Refer to the
switch diagram (on the top-right panel of the speaker) and the
figures to determine the appropriate setting. SR30
THX
provides a
unique experience with its ability to produce multiple polar pat-
terns. You should take some time and experiment to best adapt
this surround speaker to your listening habits.
receiver or amplifier
left
speaker
center
speaker
right
speaker
left
surround
speaker
right
surround
speaker
left center right
surround
side
right
rear
right
side
left
rear
left