JBL Synthesis SCL-2 Owner's Manual

JBL® SCL-2

In-Wall Loudspeaker

OWNER’S MANUAL

CONTENTS

Introduction ................................................................................................. 2

Package contents ........................................................................................ 2

Speaker placement ...................................................................................... 3

Left and right speakers .......................................................................... 3

Center channel speaker ......................................................................... 3

Surround speakers ................................................................................. 5

5.1-channel systems .............................................................................. 5

7.1-channel systems .............................................................................. 5

General installation notes ............................................................................. 6

Connecting the speakers to amplification ..................................................... 6

Back box installation .................................................................................... 8

Baffle wiring and installation ....................................................................... 11

Specifications ............................................................................................ 12

INTRODUCTION

THANK YOU for purchasing the JBL® SCL-2 In-Wall loudspeaker. For more than 70 years, JBL has provided audio

equipment for homes, concert halls, recording studios and movie theaters around the world. JBL products are
the hands-down choice of leading recording artists and sound engineers. The SCL-2 is the latest member of the
JBL Synthesis Home Theater system. To get the best performance from your new loudspeaker, please read these
instructions thoroughly.

IMPORTANT NOTES:

The SCL-2 requires a minimum 6-inch (152mm) wall depth.

The SCL-2 is not an appropriate speaker for ceiling use. Please consult your authorized JBL Synthesis
dealer for product options regarding in-ceiling speakers

PACKAGE CONTENTS

The SCL-2 is shipped as two inner cartons within an outer carton.

INNER CARTON 1 (BAFFLE) CONTENTS:

• 1 – SCL-2 Loudspeaker Baffle

• 1 – JBL Logo

• 10 – Baffle Screws

• 1 – Grille

INNER CARTON 2 (BACK BOX) CONTENTS:

• 1 – Back Box

• 10 – Back Box Mounting Screws

• 10 – Rubber Bushings

• 10 – Metal Washers

If you suspect that there has been shipping damage,
report it immediately to your dealer. We recommend that
you keep the box and packing materials for future use.

Inne r Car ton 1 Con tent s:

X 10

X 10

X 10

X 10

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Inne r Car ton 2 Con tent s:

SPEAKER PLACEMENT

L

C

R

Positioning your loudspeakers properly is critical in order to achieve the sonic performance of a home theater. Please
read the following section for guidance in correct and optimal placement.

LEFT AND RIGHT SPEAKERS

The SCL-2 is a perfect choice to serve as front left and right main speakers in a multi-channel system. Since they have
been designed for uniform coverage and maximum dispersion of sound, they should be placed with the center of the
speakers at about the same height on screen as the actors to aid in the illusion that the actors’ voices are coming
directly from their on-screen images. Ideally, the speakers will be placed about 60 degrees apart from each other
viewed from the listening position, so that the distance between the speakers is the same as each speaker’s distance
from the listener (Figure 1).

Although their acoustic coverage area allows mounting the speaker in any of the four possible orientations (horn above,
below, to the left or to the right of the two woofers), the preferred orientation is with the horn above the two woofers
(Figure 2). Ultimately, the best mounting orientation depends on the mounting location and room boundaries.

English

LEFT
SIDE

Figur e 1 Figur e 2

RIGHT
SIDE

CENTER CHANNEL SPEAKER

The SCL-2 may be oriented either vertically or horizontally when used as a center channel speaker. If the speaker
is being used with a perforated projection screen, it should be mounted behind the center of the screen with the
horizontal center axis aligned as close as possible to the center axis of the Left and Right channel speakers (Figure 3).

Figur e 3

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NOTE: Some perforated projection screens have a batten bar or crossbar centered across the screen frame (Figure 4).

In such cases make sure the bar does not block the horn. Position vertically oriented speakers so that the bar crosses
in front of the speakers at the edge of the horn closest to the central woofer.

Figur e 4

If a non-perforated projection screen, LCD/plasma/OLED display is being used in the installation, the SLC-2 may be
used in horizontal orientation mounted directly below or above and as close as possible to the video display (Figure 5).

NOTE: It is extremely important to place the center, left and right speakers as close as possible to the same height.
The horn in the center channel speaker should be no more than 2 feet (61cm) higher or lower than those in the left
and right speakers. This preserves the localization integrity of “sound pans” in which the sound appears to move from
left to center to right. If the program material also appears to travel up and down, it can destroy the illusion of lifelike
panning effects. To mitigate the height difference between the center speaker the Left and Right channel speakers
should be lowered slightly. You can also rotate the L & R SLC-2s 180-degrees (upside down) to achieve a better match
of the acoustic height of all speakers (Figure 5).

LCD TV

Figur e 5

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