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City of Santa Ana Public Library Renovation <br />Smith, Fause & McDonald Inc.Group 4 Architecture Research + Planning, Inc. <br />Conform SetASI #026 – August 72, 20254 Group 4 Project No. 22575-01 <br />SECTION 27 4116-70 INTEGRATED AUDIOVISUAL SYSTEMS AND EQUIPMENT <br />1.Review indicated mounting location in the field prior to installation. Verify that <br />location is not associated with excessive levels of vibration or background noise (due <br />to HVAC, Projector fans and loudspeakers installed under the work of this or other <br />projects, audible occupancy sensors. Report such conditions to the City's <br />Representative and obtain direction prior to proceeding. <br />2.Coordinate installation location of boundary microphones with final floor plan for <br />maximum uniformity of coverage, and maintainance of unobstructed line-of-site <br />between the projector(s) and the screen(s). <br />3.14 PERMANENTLY INSTALLED PROGRAM AUDIO SPEAKERS <br />A.At projection screen conditions, <br />1.Coordinate the installation location with the projector screen to maintain symmetry. <br />2.Place speakers indicated for mounting at underside of ceiling oriented to place their <br />long dimension parallel to the ceiling plane. <br />B.Provide resilient mounting vibration isolation at all wall and roof deck supported loudspeakers <br />to minimize coupling of program audio sound into other building spaces. This requirement <br />does not apply to ceiling supported distributed ceiling speakers. <br />C.Dress cabling neatly and out of side of audience. <br />D.Orient on adjustable speaker mounts for maximum uniformity of coverage for audience area <br />and maximum gain before feedback at presenter microphones. <br />3.15 SYSTEMS PERFORMANCE TESTING AND ADJUSTING PROCEDURES <br />A.Upon completion of the installation of all equipment in an area, perform the following tests <br />and record results. Verify safe and proper operation of all components, devices, or <br />equipment, establish nominal signal levels within the systems and verify the absence of <br />extraneous or degrading signals. Make all preliminary adjustments and document the setting <br />of all controls, parameters of all corrective networks, voltages at key system interconnection <br />points, gains and losses, as applicable. Submit test report. Correct all non-conforming <br />conditions prior to requesting Acceptance Review and Testing. Perform at least the following <br />procedures: <br />1.Mechanical: Verify: <br />a.Integrity of all support provisions. <br />b.Absence of debris of any kind, tools, etc. <br />2.Power and Isolated Ground: Verify: <br />a.Isolation of Isolated Ground system from raceway and related ground. <br />b.Grounding of devices and equipment. Integrity of signal and technical power <br />system ground connections. <br />c.Proper provision of power to devices and equipment. <br />3.Signal Wiring: Verify: <br />a.Integrity of all insulation, shield terminations and connections. <br />b.Integrity of soldered connections. Absence of solder splatter, solder bridges. <br />c.Routing and dressing of wire and cable. <br />d.Continuity, including conformance with wire designations on running sheets, <br />field and shop drawings. <br />e.Absence of ground faults. <br />f.Polarity. <br />4.Use the proper sequence of energizing systems to minimize the risk of damage. <br />Energize. <br />5.Sound Systems, Electronic Tests; confirm: <br />a.Gain at 1 kHz.