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City of Santa Ana Public Library Renovation <br />Group 4 Architecture Research + Planning, Inc.Smith, Fause & McDonald Inc. <br />Group 4 Project No. 22575-01 Conform Set – August 2, 2024Bid Set Addendum-03 – June 05 <br />INTEGRATED AUDIOVISUAL SYSTEMS AND EQUIPMENT SECTION 27 4116-47 <br />l.Provision screen with all necessary screen manufacturer options to use <br />indicated low voltage, closure operation. Receipt of serial control or contact <br />closure from Audio-visual control system shall be sufficient to unroll screen <br />for viewing, re-roll screen or to stop screen at intermediate point. Field <br />adjustable down limit switch shall automatically stop screen in full down <br />position. <br />3.Performance: <br />a.Minimum 1.0 gain on-axis gain ±0.1. <br />b.Minimum half gain angle of 50 degrees. <br />c.High contrast grey finish suitable for use with moderate to high output LCD or <br />DLP projection. Absorbs moderate amount of stray ambient light. <br />4.Manufacturers <br />a.Da-Lite Tensioned Contour Electrol w/ High Contrast Cinema Vision screen <br />material <br />b.Draper <br />c.Vutech <br />d.Stewart Filmscreen <br />e.Or equal. <br />2.10 VIDEO TERMINAL EQUIPMENT <br />A.LED VIDEO WALL, 136” DIAGONAL <br />1.Drawing Reference: LED136 <br />2.Manufacturer: <br />a.Planar MGP Complete 136 w/ mount and drivers <br />b.No Known Equal <br />B.Video/NDI Format Conversion Balun <br />1.Drawing Reference HDND, SDND, NDSD, NDHD <br />2.Manufacturer: <br />a.Vizrt/Newtek Spark Series <br />b.Blackmagic <br />c.Or equal <br />C.LCD, 23” Topset, with Stand <br />1.Drawing Reference: LCD23 <br />2.Manufacturer: <br />a.Dell S2425H <br />b.Or equal <br />D.LCD, 55” Diagonal <br />1.Drawing Reference: LCD55 <br />2.Features/Functions: <br />a.Panel Type: LCD, LED Backlighting <br />b.Professional/commercial grade display warrantied by the manufacturer for <br />continuous operation for not less than two years. <br />c.Minimum Viewable Panel Size: 55” diagonal, 16:9 aspect ratio <br />d.Maximum Pixel Pitch: 0.923 x 0.923 mm <br />e.Native Resolution: 1920 x 1080 <br />f.Viewing Angle (H/V): 176°/176° <br />g.Brightness: 450 cd/m2 <br />h.Maximum Response Time: 6 ms <br />i.Contrast Ratio: 5000:1 <br />j.Inputs <br />1)VGA (D-sub 15 pin)