JBL service manual E250P/P12SW subwoofers, Analog Receiver/Processor - Line-LevelConnections

RECEIVER/PREAMPLIFIER

Subwoofer

Output/LFE

E250P/P12SW subwoofers

Analog Receiver/Processor – Line-Level Connections

Use this installation method with an analog receiver/ processor that does not have digital processing or bass management, and that is equipped with a full-range subwoofer output or a volume- controlled preamp (line-) level output:

Use RCA-type interconnect cables to connect the line- level subwoofer outputs on your receiver or amplifier to the line-level inputs on the subwoofer.

IMPORTANT: Make sure that the LFE toggle switch on the subwoofer is in the “Normal” position. Do not use the “LFE” position with Dolby* Pro Logic*-only processors.

Note: If your receiver or amplifier has only one sub- woofer output jack, then you

may connect the subwoofer
output on your receiver/pre-
amplifier to either the left or
right line-level input on the
subwoofer. It makes no differ-			LEVEL
ence which jack you choose.			Min	Max
Connect each speaker to			LFE	NORMAL
the corresponding speaker			PHASE 0º	180º
terminals on your
receiver or amplifier.			CROSSOVER
Make sure your receiver			FREQUENCY
RECEIVER			50Hz	150Hz
or processor is config-
Subwoofer
ured so that the sub-	Out
L		R	L	R
woofer is “On.”			LINE LEVEL IN
Note for advanced
			For LFE use L or R
users: If your receiver/
processor has a built-in low-				L
pass crossover filter for the				HIGH
				LEVEL
subwoofer output, then the LFE
				IN
switch should be set to the			+ –	R
“LFE” position to bypass the

subwoofer’s internal crossover.

Digital Receiver/Processor – LFE Connection

Use this installation method for Dolby Digital, DTS® or other digital surround processors that have bass-management programming, or for analog receivers/processors that have a filtered subwoofer output:

IMPORTANT: Make sure that the LFE toggle switch on the subwoofer is in the “LFE” position. Use the line-level input jacks for the Low- Frequency Effects channel. Connect these jacks to the LFE output or subwoofer output on your receiver or amplifier.

Note: If your receiver or ampli- fier has only one subwoofer output jack, you may connect the subwoofer output on your receiver/preamplifier to either

the left or right line-level input on the subwoofer. It makes no difference which jack you choose.

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” or “LFE On.” The front, center and surround speakers should be

set to “Small” or “Large” depending on their size and frequency response. Consult your receiver’s or processor’s owner’s manual.

LEVEL

Min Max

LFE NORMAL

PHASE 0º 180º

CROSSOVER

FREQUENCY

50Hz150Hz

L R

LINE LEVEL IN

For LFE use L or R

L

HIGH

LEVEL

IN

R

+ –

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