User manual ELECTRO-VOICE 729S DATASHEET

[. . . ] 3 Installation Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Installation Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Installation Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Step 1: Selection and Preparation of the Mounting Surface . . . . . . . . . . . . . . . . . . . . . [. . . ] Consult and follow all applicable codes and procedures. Use only ½ inch diameter mounting bolts, 4 per bracket minimum. (all 6 is recommended) When mounting outdoors, remember to allow for wind, snow and ice load. Do not locate the Sx600 where it may be subjected to water or snow run-off from roofs, gutters, etc. NEVER MOUNT AN Sx600 ON ITS SIDE. 4 Electro-Voice® Sx600 User Manual Pole Mounting Follow the pole manufacturers recommendations when mounting to a pole. On wooden poles, make sure there is no rot or other deterioration. Through-bolts with backing plates are highly recommended. Lag bolts should only be used in conjunction with straps. Approved Straps (4 Reqd) 1/2 Bolts (6 Reqd) SuperSAMTM Bracket Figure 2: Pole Mounting Block Wall Mounting Do not attempt to mount an Sx600 to a block or brick wall without through-bolts and large, heavy steel backing plates on both sides of the wall. 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. Make electrical connections per all applicable codes in a weather-tight box and secure the SJO cord through a weather-tight gland nut. Observe color code for proper polarity: Black wire from speaker is audio (-), white wire is audio (+). Using the PIX (Constant Voltage Version) Constant Voltage Design Considerations One of the major expenses of any large sound system up-grade is the cost of running new wiring. For this reason, the Sx600PIX transformer has taps for use on lines as high as 200volts, which is easily delivered by an Electro-Voice CPS-4 amplifier in bridge mode. Keeping the current draw the same, changing from 70volts to 200volts means you can now pull approximately 3 times the wattage from the same wiring!In new installations, the higher voltages mean less line loss on long runs, less current and lighter gauge wire. Always check and comply with all applicable codes. 8 Electro-Voice® Sx600 User Manual Selecting Wattage Taps The Sx600 is intended to be a high level speaker, so the transformer taps are set up to produce a full 600 watts at each of the 4 voltages listed. If necessary, the wattage may be halved by selecting the next HIGHER voltage tap. (i. e; Do not use a 70 volt tap in a 100 volt system, etc. ) The Sx600PIX is shipped from the factory pre-wired for 600 watt operation on standard 70 volt lines. To select a higher voltage, remove the 10 mounting screws around the perimeter of the input panel (See Figure 6). CAUTION: the transformer alone weighs 18 lb. (8. 2 kg. ) Be prepared to support this weight when the screws come out! [. . . ] With an oscilloscope on the amplifier output, adjust compressor/ limiter to keep amplifier(s) out of clipping. If the system has no comp/limiter, add one to the signal chain and be sure it is properly set. Inconsistent intelligibility in audience area 1. ) Improper aiming. If intelligibility decreases near the speaker, the down-angle is set too high. If the intelligibility is great right under the speaker but suffers as you begin to move away from it, the down-angle is set too low. [. . . ]