Page 7
INSTALLATION AND OPERATION
Find an appropriate place in the rack to mount the
CS-3X. A good place is between the stereo proces-
sor and the power amps since the wiring will fol-
low this path. Since the CS-3X is only one rack space
high, often you can just use it to replace a vent or
blank panel. This may be important if space is at a
premium. If you are retrofitting an existing installa-
tion, you must also provide a place in the sound
rack to mount another power amplifier for the re-
quired additional amplification channel(s) for the
rear surround speakers. Depending on the existing
setup, you may already have an additional amplifi-
cation channel(s) available which can possibly be
used for the new channel(s).
There are no particular ventilation requirements
other than what is typical for other low level pro-
cessing equipment. However, as always, it is a good
idea to keep ALL electronic equipment running cool
for best reliability and longest life.
WIRING
If you are placing this unit into an existing installa-
tion, the left surround and right surround wiring from
the stereo processor to the power amps must be
removed. Wire the left surround and right surround
outputs from the stereo processor to the left sur-
round and right surround inputs of the CS-3X. Wire
the Left Wall, Right Wall, and Rear Wall outputs of
the CS-3X to the appropriate power amplifier in-
puts. Use standard wiring practices for low level
audio circuits.
OUTPUT MODES
The CS-3X can be used in one of two output modes.
In the 3X format, there is no difference regardless
of the ouput mode used. The difference appears only
in the normal LS-RS format or in BYPASS.
Mode One requires that all rear wall speakers be
wired as one channel and needs only one channel
of amplification. This is the less expensive method
of adding the rear channel to a system. In LS-RS
format or BYPASS, the Left Surround signal appears
in the Left Wall speakers AND in all the rear wall
speakers. The Right Surround signal appears in the
Right Wall speakers AND in all the rear wall speak-
ers. This gives a partial wrap around effect to the
individual Left and Right Surround sounds and does
not maintain the channel separation as accurately
as Mode Two.
Mode One requires a jumper wire be placed on
terminals marked CRW1 and CRW2. Mode two
requires the CRW1 and CRW2 terminals have NO
jumper on them. The factory default is MODE TWO.
Mode Two requires that the rear wall speakers be
wired as two separate channels. This mode needs
two channels of amplification. This is the more ex-
pensive method of adding the rear wall channels to
a system because it requires two channels of am-
plification instead of one. However, you may need
to add a dual channel amplifier anyway if you do
not have a spare amplifier channel. If this is the
case, then use Mode Two. In LS-RS format or BY-
PASS, the Left Surround signal appears in the Left
Wall speakers AND in the left rear wall speakers.
The Right Surround signal appears in the Right Wall
speakers AND in the right rear wall speakers. This
mode more accurately maintains the channel sepa-
ration when the system is not in 3X format.
AUTOMATION HOOKUP
Wire the format terminals to the similar format ter-
minals on your stereo processor. This will allow the
automation to control the format switching. The
format terminals have internal protection diodes to
allow systems with pullup voltages higher than
+5VDC to be safely connected to the CS-3X pro-
cessor.
See the hookup diagrams on Page 9 for wiring in-
formation.
CAUTION: When connecting the CS-3X to a Dolby
CP500, the CAT 684 board must be Rev 1 or higher.
Rev E or lower must be changed. Also, the CP500
must have software version 1.51 or higher installed.
WARNING: If you do not make the
proper connections to the format
terminals, the CS-3X will NOT go
into the proper format for digital
soundtracks, and you will NOT get
the full benefit of the product.
INSTALLATION
