User manual JBL P81BB

[. . . ] JBL Consumer Products 250 Crossways Park Drive Woodbury, New York 11797 USA WARNING This enclosure is not listed for use in air-handling plenums. Installation of this enclosure in walls or ceilings of fire-barrier-rated construction requires that construction methods shall be employed in order to comply with local building or life safety codes. Consult your local authority having jurisdiction (building, electrical or fire safety inspector) to determine what acceptable construction methods will be required. WARNING The P81BB In-Wall Back Box weighs 19 lb (8. 6kg) empty, and 32 lb (14. 52kg) with a P81 speaker system installed in it. [. . . ] Refer to the JBL P81/P941 In-Wall Loudspeaker owner's manual for speaker placement considerations. Record exact measurements from the floor, ceiling and an adjacent drywall section. NOTE The P81BB/P941BB Back Box eliminates sensitivity to placement considerations due to standing waves within the wall cavity, as described in the JBL P81/P941 In-Wall Loudspeaker owner's manual. Position the back box between two wall studs and into the wall cavity, as shown in Figure 4. The back box must be placed between standard 16-inch on-center stud spacing. If desired, the back box can be mounted upside down (large flange toward the floor) if you will be mounting the speaker close to the ceiling. Rear Front Figure 3: P81BB/P941BB Back Box Depth NOTE Figure 3 shows the depth of the back box. It can be installed in walls constructed with standard 2x4s. It is important to note that the speaker mounting frame requires a minimum depth (from the wall face to the inside back of the P81BB/P941BB Back Box) of 3-1/2 inches (88. 9mm) for proper installation. This can only be achieved by using 5/8-inch (15. 9mm) drywall on the wall face. It is recommended that the installer consult with the drywall installer before beginning the installation. CAUTION Installers are advised to wear work gloves and face masks when installing the back box and making wire connections, as the back box contains fiberglass. . Figure 4: Place the Back Box Between Wall Studs TOP Figure 5: Fasten Back Box to Wall Studs 3. Firmly secure the back box into place using nails, as shown in Figure 5. 5 CAUTION Installers must adhere to local building codes to ensure proper installation. JBL is not responsible for any possible damage caused by improper installation. Feed the power amplifier wires from the wall cavity down through the cable clamp located on top of the enclosure. Pull approximately two feet of wire through the clamp to create a generous service loop inside the enclosure for ease of hookup, as shown in Figure 6. Binding Posts 8. Cut a small hole in the center of the template area to make sure the template is in the right location. After confirming the correct location, cut the template hole opening, as shown in Figure 7. Use a carpenter's level to ensure the opening is level. 10. Fasten the drywall to the wall studs using drywall screws. [. . . ] NOTE Make all connections observing the proper polarity, positive to positive (+) and negative to negative (­). Retighten the terminal connectors by hand to ensure a secure connection. Refer to the JBL P81/P941 In-Wall Loudspeaker owner's manual for complete instructions on installing the speaker baffle to complete the installation. P81BB/P941BB BACK BOX OUTER DIMENSIONS Width Height Depth 17-1/2 inches (445mm) 28-5/8 inches (727mm) 3-3/8 inches (86mm) The following information must be included when a product is returned for service: · Name · Company name · Street address, city, state and zip code · Telephone number, including area code and country code (if applicable) · Product serial number OBTAINING SERVICE Before returning a product for warranty or nonwarranty service, contact JBL Customer Support to determine the extent of the problem and to obtain a Return Authorization (RA) number. No products will be accepted without an RA number issued from JBL. [. . . ]