Installation Instructions P81BB/P941BB Back Box Outer Dimensions Obtaining Service ® DOCUMENTATION CONVENTIONS This document contains general installation instructions for the JBL ® Performance ™ Series P81BB and P941BB Back Boxes. It is important to read this document before attempting to use this product. Pay particular attention to safety instructions.
JBL Consumer Products 250 Crossways Park Drive Woodbury, New York 11797 USA WARNING This enclosure is not listed for use in air-handling plenums.
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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.
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NOTE The P81BB/P941BB Back Box elimi- nates sensitivity to placement consid- erations due to standing waves within the wall cavity, as described in the JBL P81/P941 In-Wall Loudspeaker owner’s manual. 2. Position the back box between two wall studs and into the wall cavity, as shown in Figure 4.
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CAUTION Installers must adhere to local building codes to ensure proper installation. JBL is not responsible for any possible damage caused by improper installation. 4. Feed the power amplifier wires from the wall cavity down through the cable clamp located on top of the enclosure.
Return Authorization (RA) number. No products will be accepted without an RA number issued from JBL. If a JBL product must be returned for repair, JBL will assume no responsibility for the product during shipping from the customer to JBL, whether the prod- uct is or is not covered under warranty.
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11/05 ® All features and specifications are subject to change without notice. JBL and Harman International are trademarks of Harman International Industries, Incorporated, registered in the United States and/or other countries. Performance is a trademark of Harman International Industries, Incorporated.