User manual ELECTRO-VOICE SX600

[. . . ] Sx600 User Manual Electro-Voice® Sx600 User Manual Table of Contents Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Important Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Product Feature Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 System Acoustic Design Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] On poured concrete walls use deep ½ inch diameter anchors that cannot be pulled out once set. Use all 6 mounting holes. SuperSAMTM Bracket 1/2 Bolts (6 Reqd) Block Wall Heavy Steel Backing Plates Block Wall Figure 3: Block Wall Mounting Electro-Voice® 5 Sx600 User Manual Stud Wall Mounting First determine whether the structural members in the wall can withstand not only the weight of the Sx600, but also the side-to-side stresses of heavy cross-winds. Reinforce both sides of the wall with heavy plates, ¾ inch marine plywood minimum, and use through bolts. Additional side-to-side support may be had by attaching simple steel outriggers (not included) from the SuperSAMTM pivot bolt to the next stud on either side of the mounting bracket. Never mount to a wall containing plaster or drywall without backing plates. 1/2 Bolts (6 Reqd) SuperSAMTM Bracket Stud Large Backing Plates, 3/4 Marine Plywood Min. Steel Outriggers Studs Figure 4: Stud Mounting I-Beam Mounting Because of the vast number of sizes and conditions of their use, consult a licensed structural engineer for the approved method of attaching an Sx600 to any particular I-Beam or other structural component. Mounting Surface Reinforcement If in doubt: Make It Stronger. Strong side winds will exert tremendous side leverage along the axis of the mounting bolts sufficient to crush some surfaces. A large backing plate and/or steel outriggers attached from the pivot bolt to the wall 16" to 24" either side of center makes a simple and effective reinforcement in most situations. 6 Electro-Voice® Sx600 User Manual Installation Procedure Step 1: Selection and Preparation of the Mounting Surface Surface must be clean and smooth. It must also be a material that is not easily crushed. While the SuperSAMTM distributes weight evenly over a relatively large area, strong winds against the side of the Sx600 will exert significant crowbar-like leverage between the bolts and the side corner edges of the bracket. For this reason, surfaces of plaster, drywall, soft wood, cinder block, ceramic, glass or other brittle, crushable materials must have a large heavy backing plate to prevent the Sx600 from loosening itself by crushing its mounting surface. Step 2: Mounting the SuperSAM Bracket If bolts are to be used, determine the exact location desired for the holes on the mounting surface. Use a center punch to mark the center of each hole to be drilled and minimize hole drift. The bracket MUST sit perfectly flat against the mounting surface. Mount the bracket using ½ bolts, washers, lock washers and nuts, and tighten securely. Stainless Steel hardware is recommended. Step 3: Mounting the Speaker and Aligning Pre-set the down angle of the speaker (as pre-determined by EASE) by inserting the 5/16" Stainless Steel bolt through the appropriate holes (See Figure 5). Tighten it and the ½ pivot bolt securely. (If aiming visually, tighten bolts finger-tight only until aiming is finalized. ) Place the long ½ bolt and washer through the appropriate hole in the mounting bar. Use the hole nearest the speaker for down-angles of less than 40 degrees and the farthest hole for angles greater than 40 degrees. Set the speaker on the already mounted bracket end bar, dropping the ½ pivot bolt through the hole near the end of the bar. (The second hole is provided as a convenience for certain close in situations. ) Install the flat washer, lock washer and nut and tighten just enough to pull both bars together. Determine pan angle by sighting along center groove of enclosure. (Either top or bottom) Securely tighten pivot bolt to lock in place. Too high an angle will result in poor intelligibility in the nearfield; a too-low angle will cause poor intelligibility far-field and a hot spot close in. [. . . ] Intelligibility across the horizontal plane (side to side) can be affected by a sloping audience area, reflections from nearby walls or other barriers, and trees, banners and other objects obstructing and/or reflecting the sound in an adverse way. EASE is an excellent tool for predicting the correct aiming, but in actual use these angles may need to be adjusted. The primary speech fundamentals are found in the 300Hz to 3kHz range, most consonants are affected by the 3kHz to 6 kHz band, and sibilance is mostly from 6kHz on up. Substantial EQ cuts in any of these regions will seriously degrade the intelligibility of speech. [. . . ]