JBL manual Installation Instructions, To Install the P81/P941, Locate the wall studs

INSTALLATION INSTRUCTIONS

For installations in new construction projects, use the JBL P81/P941 In-Wall Rough-In Bracket, which should be installed by a professional. Refer to the JBL P81/P941 In-Wall Rough-In Bracket Installation Instructions for more infor- mation.

The JBL P81 and P941 in-wall speakers were designed to be easily installed into existing walls. It is recommended that they be professionally installed. The following tools are required for installation:

•(4) Allen-head screws (included)

•5/32-inch Allen key (included)

•1/16-inch Allen key (included)

•cardboard installation template (included)

•pencil

•Phillips-head screwdriver

•measuring tape

•utility knife

•carpenter’s level

•flat-blade screwdriver

•stud finder

To Install the P81/P941:

NOTES:

•The height of the woofer within the stud bay relative to the entire height of the bay is critical because of standing waves within the cavity.

•Before installation, determine the height of the cavity. (There might be a fire block that makes it shorter than the entire height from the floor to the ceiling.) Avoid placing the woofer at the very top or bottom of the stud bay, as this would cause a serious cancel- lation of low frequency output.

•The ideal location for the woofer (whether the speaker is mounted upright or inverted) is at the one-third distance point, as shown in example A of Figure 10. If that is not feasible, then two-fifths, or one-fifth of the height are the next best alternatives. The least desirable position to place the woofer is at one-half or one- fourth of the height. If a fire block

is completely dividing the bay, the measurement would be from the fire block – not the floor or ceiling – as shown in example B of Figure 10. Example C shows an inverted speaker placement.

3.With a utility knife, cut the wall opening, as shown in Figure 11.

•Use caution not to cut into any electrical wiring or plumbing. Run the wiring from your system to the hole. (Be sure to comply with local wiring codes.)

•The measurements of the open- ing(s) required to mount the JBL in-wall frames are listed below:

•JBL P81

Width: 10-1/2 inches (267mm)

Height: 14-7/8 inches (378mm)

•JBL P941

Width: 12-1/2 inches (318mm)

Height: 19-1/8 inches (486mm)

4.The speakers are shipped with the baffle assembly attached to the mounting frame at its four corners. Unscrew the four screws and care- fully lift the baffle assembly out of the mounting frame, as shown in Figure 12.

Baffle

1.Locate the wall studs.

2.Use the supplied template to trace an outline to mark the desired location to mount the speaker system. Use caution to cut the hole approximately centered between wall studs, allow- ing at least 1 inch between the cutout and wall studs, as shown in Figure 9. Use a carpenter’s level to ensure a level measurement.

A

1/3 of

Height

Place Woofer

at 1/3 the

height of

Stud Bay

B

1/3 of Height

1/3 the height of Stud Bay (measured from the Fire Block)

Fire Block

C

1/3 of Height

1/3 the height of Stud Bay (measured from the Fire Block)

Figure 10: Ideal Height of Woofer

		Carpenter's Level
At least￿	At least￿	Utility Knife
1-inch￿	1-inch￿

Figure 9: Use Wall Template Figure 11: Cut Wall Opening

Mounting Frame

Figure 12: Remove Baffle From Mounting Frame

5.(Optional) It is recommended that the frame be painted before it is mounted. For instructions on painting the frame and grille, refer to page 12.

6.The mounting frame has spring- loaded clamps around its perimeter, which are designed to fold shut as the mounting frame is placed into the wall opening and spring open once inside, anchoring the mounting frame in the wall opening. See Figures 13 and 14. Loosen all clamp screws until the clamps are fully extended.

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