JBL P941BB, P81BB installation instructions About Back BOX, Installation Instructions

ABOUT THE

BACK BOX

Thank you for purchasing the JBL Performance P81BB/P941BB Back Boxes, which are optional rear enclo- sures for the JBL P81 and P941 In-Wall Loudspeakers. The P81BB/P941BB Back Boxes which provide optimal vol- ume for woofer alignment and reduce acoustic bleed-through to rooms adjacent to your listening area. The P81BB/P941BB Back Boxes also func- tion as mounting brackets designed to facilitate the installation of the P81/P941 in-wall loudspeakers in new construction or major retro-fit installa- tions. The back boxes improve sonic performance while providing solid sup- port for the speaker mounting frame and baffle assembly. Since the back box is installed before the drywall is mounted, it allows the speakers to be mounted in a clean, efficient manner.

The JBL P81BB/P941BB Back Box measures 17-1/2 inches x 28-5/8 inches (445mm x 727mm) (including the flanges). The back box is designed

to mount between two 2x4-inch (or

2x6-inch) wall studs on 16-inch centers. See Figures 1 and 2 for inner dimen- sions of the P81BB and P941BB.

INSTALLATION INSTRUCTIONS

The following items are required for installation:

•tape measure

•carpenter’s level

•pencil

•hammer

•nails

•drywall section

•drywall screws

•staples/U nails

•utility knife

•service wire (included)

•work gloves

•face mask

CAUTION

The back box should be installed by a professional. Installers must adhere to local building codes to ensure proper installation. JBL is not responsible for any injury or damage caused by improper installation.

	13.57 inches
	(344.7mm)
Place side flange	This flange fits in between wall studs
on top of stud

13.57 inches (344.7mm)

16.78inches (426.2mm)

10.65 inches (270.5mm)

14.84 inches (376.9mm)

In-wall fits here

28.62inches

(727mm)

	12.50 inches
21.16 inches	(317.5mm)	28.62 inches
(537.5mm)	19.22 inches	(727mm)
	(488.2mm)

17.50inches (444.5mm)

17.50inches (444.5mm)

Figure 1: P81BB Back Box Height and Width Figure 2: P941BB Back Box Height and Width

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