JBL SCS138 - Manual (Page 8)

Dolby Pro Logic (Non-Digital) – Line Level
8
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.
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 front left,
front right, center and rear
speakers should all be set to
“Small.” Note:
When using the LFE input, the
subwoofer's Crossover control
is NOT active, because this
function is controlled by your
surround processor.
When using the LFE input, set
the subwoofer's Volume control
to "Max" and calibrate the
subwoofer level along with the
other speakers according to
the set-up instructions in the
owner's manual for your
surround receiver/amplifier.
Dolby Digital or DTS ® (or Other Digital Surround Mode) Connection
LINE LEVEL IN
LFE INPUT LFE OUT
L
R
SUBWOOFER RECEIVER
+ –
+ –
+ –
+ –
+ –
+ – + –
+ – + –
+ –
Receiver
Subwoofer
Out
Left
Front
Left
Rear
Right
Front
Right
Rear
Subwoofer
R L
R
L
Center
Line-
Level
In
Right Surround
Right Front
Left Surround
Left Front
Center
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.