User manual JBL SP6CII

[. . . ] In order to provide sufficient depth for loudspeakers, drywall used must be 5/8" (16mm) or thicker. When installing loudspeaker back boxes with rectangular openings in the wall and mounting the speakers to these back boxes, please make sure that they are mounted in the correct orientation, as identified with indented markings on the back box baffle, "TWEETER SIDE" and "WOOFER SIDE. [. . . ] Back box models with a rectangular cutout are designed to be installed in a stud bay with 2" x 4" (50mm x 100mm) studs, minimum. Models with round cutouts are to be mounted in ceilings with existing studs of a minimum of 2" x 6" (50mm x 153mm) in size. Depending on back box model and size, they can be installed in standard stud spacings of 12, 16" or 24" (305mm, 406mm or 610mm). The orienta" tion you choose depends on the stud bay spacing and the desired orientation of the speaker. Choose your mounting orientation from the options shown in Figures 1 and 2. HCGP1027FireRtdBckBxs-OM 6/13/08 3:19 PM Page 2 SUSPENDED-CEILING INSTALLATION Determine the desired location and remove the tile from the ceiling tile system. Ensure that there is a clearance of 6" (153mm) above the ceiling tile chosen. lf not, choose a nearby tile that has a clearance of 6" (153mm) above it. This impression will be the template for cutting the hole in the ceiling tile. MODEL FBB5 FBB6 FBB7 FBB8 FBB9 FBB55 FBB81 FBB941 FBB5C FBB6C FBB8C FBB10C DROP-CEILING CUTOUT SIZE* 8-3/4" x 6-1/4" 9-13/16" x 7-1/4" 12-1/8" x 10-1/4" 11-15/16" x 9" 17-9/16" x 11-3/4" 14-1/8" x 6-3/8" 15-1/8" x 10-7/8" 6-13/16" Diam. (223mm x 158mm) (249mm x 183mm) (307mm x 260mm) (303mm x 228mm) (446mm x 298mm) (358mm x 161mm) (383mm x 276mm) (174mm Diam. ) (203mm Diam. ) (246mm Diam. ) (290mm Diam. ) lf the back box is attached to the building structure using wire hangers or a safety harness, lift the free end of the hanging tab located on top of the back box by bending the tab upwards, as shown in Figure 5. Figure 5. Tab bend Determine which side of the back box on which to install the conduit or speaker wire. Place the conduit set-screw connector on this side of the back box and install the hole plug on the other side of the back box. Align the loudspeaker back box with this hole and install it above the tile. Adjust the rails on the back box so that the ends of the rail are on top of the suspended ceiling grid (T-bar) and the rail overhangs the grid on both sides. [. . . ] If your local building safety codes and regulations or hardware standards rate bolts and nuts by strength, please ensure that your selected bolts and nylon lock nuts are capable of withstanding the weight of the in-ceiling back box and the loudspeaker. Utilizing the two rails and the two carriage bolts with nylon lock nuts, attach the ceiling rail to the "L" bracket on the backside of the back box front plate with a carriage bolt and lock nut, as shown in Figure 4. Figure 4. [. . . ]