Recessed ceiling speakers are supported from the structure above for both large and small spaces. A three-quarter-inch conduit routes speaker cabling back to the head-end room, terminated with nylon end-cap bushings and positioned no more than eighteen inches above the ceiling opening. The speaker housing utilizes a ceiling support bracket and tile bridge matching the ceiling type, with the grill mounted flush to the finished ceiling. An independent safety cable featuring an adjustable gripple or wire rope assembly is anchored to the structure above. All speaker wiring and mounting materials are coordinated with the structural engineer and installed per manufacturer instructions.
1. 3/4" CONDUIT BACK TO NEAREST HEAD-END ROOM / CABLE TRAY OR NEXT SPEAKER LOCATION. J-HOOKS MAY BE PERMITTED ON A PER PROJECT BASIS. REFER TO PATHWAY REQUIREMENTS AS NOTED IN THE AV SYSTEM SYMBOLS LEGEND FOR PROJECT SPECIFIC CABLE REQUIREMENTS. 2. PROVIDE NYLON END-CAP BUSHINGS. 3. ATTACHMENT POINT: STRUCTURAL CONDITIONS MAY VARY BY LOCATION. COORDINATE ANCHOR TYPE AND BOLT SIZE WITH STRUCTURAL ENGINEER PRIOR TO INSTALLATION. 4. PROVIDE APPROPRIATE CEILING SPEAKER SUPPORT BRACKET PER CEILING TYPE AND MANUFACTURES RECOMMENDATIONS. 5. SPEAKER CABLE. TERMINATE TO SPEAKER PER MANUFACTURES INSTRUCTIONS. 6. SAFETY CABLE: PROVIDE ADJUSTABLE GRIPPLE OR WIRE ROPE ASSEMBLY FOR ALL SPEAKER LOCATIONS. COORDINATE WITH STRUCTURAL ENGINEER FOR APPROVAL. 7. CONDUITS FOR SPEAKER CABLE TO BE TERMINATED NO MORE THAN 18" ABOVE CEILING OPENING. 8. SPEAKER GRILL MOUNTED FLUSH TO FINISHED CEILING (COORDINATE COLOR WITH ARCHITECT). KEYNOTES CEILING SPEAKER DETAILS SYMBOLS: A.10.2 # GENERAL NOTES: 1. SPEAKER MAY BE SUPPORTED BY EITHER A TILE BRIDGE OR FROM STRUCTURE TO ACHIEVE A MINIMUM SAFETY FACTOR OF 5:1. 2. CONDUIT AND J-BOXES BY DIV. 26 CONTRACTOR. 3. SPEAKER, MOUNTING & SUPPORT MATERIAL, COVER PLATE, AND WIRING BY DIV. 27 CONTRACTOR. CONTRACTOR TO PROVIDE ALL COMPONENTS TO MEET PLENUM SPACE REQUIREMENTS. 4. CONDUIT RUNS EXCEEDING 100 FT OR 180 DEGREES OF BENDS: CONDUIT SIZE SHALL INCREASE TO 1" AND A PULL BOX SHALL BE PROVIDED AT EVERY 100 FT INCREMENTS OR EVERY 180 DEGREES OF CONDUIT BENDS (WHICHEVER IS EXCEEDED FIRST). 7 CEILING SPEAKERS (LARGE SPACE) CEILING SPEAKERS (SMALL SPACE) FINISHED CEILING 8 FINISHED CEILING 8 IN CEILING LOUDSPEAKER / SUBWOOFER 4 7 5 2 STRUCTURE ABOVE 1 6 3 STRUCTURE ABOVE 1 1 3 6 4 IN CEILING LOUDSPEAKER / SUBWOOFER 2 5 S CX SW CX
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