6
Dolby Pro Logic (Non-Digital) – Line Level (SCS 178 and SCS 188)
Use this installation method for
Dolby Pro Logic appli-cations
(not Dolby Digital, DTS
®
or
other digital processing), where
the receiver/processor is
equipped with a subwoofer
output, or a volume-controlled
preamp (line-) level output:
Use RCA-type patch cords
to connect the line-level
subwoofer outputs on your
receiver or amplifier to the line-
level inputs on the subwoofer.
IMPORTANT: Do not use the
LFE input on the subwoofer
with Dolby Pro Logic
processors. Note: If your
receiver or amplifier only has
one subwoofer output jack,
then you will need to use a Y-
connector (not included). Plug
the male end of the Y-
connector into your receiver or
amplifier’s subwoofer output
jack, and connect each of the
two female ends to separate
RCA-type patch cords. Finally,
plug the RCA-type patch cords
into the line-level inputs on the
subwoofer.
Connect each speaker to the
corresponding speaker
terminals on your receiver or
amplifier.
Dolby Digital or DTS
®
(or Other Digital Surround Mode) Connection
(SCS 178 and SCS 188)
+ –
+ –
+ –
+ –
+ –
+ –
+ –
+ –
+ –
Receiver
Subwoofer
Out
Left
Front
Left
Surround
+ –
Right
Front
Right
Surround
Subwoofer
R L
Center
Surround Back
Line-
Level In
Right Surround
Right Front
Left Surround
Left Front
Center
R
L
+ –
Surround Back
+ –
Only in 6.1 systems
Use this installation method for
Dolby Digital, DTS
®
or other
digital surround processors:
Use the line-level input jack
marked “LFE” for the Low-
Frequency Effects channel.
Connect this jack to the LFE
output or subwoofer output
on your receiver or amplifier.
Connect each speaker to the
corresponding speaker
terminals on your receiver or
amplifier.
Make sure that you have
configured your surround-
sound processor for
“Subwoofer On.” The surround
receiver should be configured
for 6.1-channel operation
(if available) and the front left,
front right, center and rear
speakers should all be set to
“Small.”
If your receiver allows you to
set the crossover frequency
between the subwoofer and the
main speakers, select either
120Hz or 150Hz, or select the
setting that is the closest
frequency below these.
LINE LEVEL IN
LFE INPUT
LFE OUT
L
R
SUBWOOFER
RECEIVER
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