User manual ELECTRO-VOICE 74

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Manual abstract: user guide ELECTRO-VOICE 74

Detailed instructions for use are in the User's Guide.

[. . . ] To get the most out of your FRi-Series investment, please read carefully through this entire FRi-Series guide. Inside you will find information that will help you achieve maximum product life, optimum performance, and a safe, successful installation. If you need more information, call your EV dealer or contact EV directly: Electro-Voice 12000 Portland Avenue Burnsville, MN 55337 U. S. A. Only fully licensed, qualified professionals following safe rigging standards should suspend any Electro-Voice system. 1 FRi Series Overview F R i SPEAKER SYSTEMS Contents Page 2-4 5 6 7-10 10 11 12 FRi Series Overview FRi Series Warranty Installation Environments Rigging Amplifier Recommendations Biamp Operations Electronic Crossover FRi Series Overview The Electro-Voice FRi-Series of fixed installation, sound reinforcement loudspeakers deliver a broad range of performance options to accommodate the acoustic requirements of most environments. [. . . ] This subwoofer can be operated in passive or bi-amp mode. 3 FRi Series Overview F R i SPEAKER SYSTEMS FRi-122/64 The two-way full range loudspeaker system shall incorporate a 12-in. The LF driver shall be mounted in a vented enclosure tuned to optimum low-frequency response. The HF driver shall be loaded on a constant-directivity horn with a nominal coverage pattern of 60 X 40-degrees. An internal passive filter network shall provide component crossover and system equalization. Input panel shall be easily changeable from passive to biamp operation via internal connector. System frequency response shall be 62 Hz to 15 kHz (-3 dB) measured on axis. The loudspeaker shall produce a sound pressure level (SPL) of 97 dB on axis at 1 meter with a power input of 1 watt, and shall be capable of producing a full-power long-term average output of 122 dB on axis at 1 meter. It shall handle 300 watts of amplifier power long-term (EIA Standard) and shall have a nominal impedance of 8 ohms. The loudspeaker enclosure shall be trapezoidal in shape with side draft angles of 15 degrees each. It shall be constructed of 13 ply void-free cross-grain-laminated Birch plywood and shall employ extensive wooden bracing. It shall be finished in black or white acrylic paint or available unfinished. Electro-Voice Speakers and Speaker Systems are guaranteed against malfunction due to defects in materials or workmanship for a period of five (5) years from the date of original purchase. The Limited Warranty does not apply to burned voice coils or malfunctions such as cone and/or coil damage resulting from improperly designed enclosures. Electro-Voice active electronics associated with the speaker systems are guaranteed for three (3) years from the date of original purchase. Additional details are included in the Uniform Limited Warranty statement. 5 Installation Environments F R i SPEAKER SYSTEMS Interior Installation The standard FRi cabinets are constructed for indoor installation to provide years of trouble-free service. Should you endeavor to paint your cabinet another color, clean and prep the cabinet as you would following standard painting practices. The metal grille on the cabinets is designed to accommodate custom-colored, acoustically transparent fabrics which wrap neatly around the grille and is held in place by U-channels (included). This allows the flexibility to match most interior design requirements. We suggest the use of acoustically transparent fabrics as supplied by Stevenson & Lawyer (Tel. 1-800-968-5535) or equivalent to ensure maximum performance and safety. Outdoor Installation Should your application call for outdoor installation, locate the cabinet to provide protection from direct exposure to sunlight, rain and other weather conditions. 6 Rigging F R i SPEAKER SYSTEMS Installation of the Shoulder Eye Bolts Rigging of the FRi-Series is done with readily available 3/8-16 forged shoulder eye bolts. Replace screws with eye bolt, using a washer (supplied) under each one. 60 OR 40) CABINET SIDE DRAFT ANGLES DESIGNED FOR NOMINAL ARRAY PERFORMANCE WHEN "TIGHT PACKED" WITH FRi 1815 SUB BETWEEN TWO FULL RANGE CABINETS. [. . . ] Double-check for correct line assignment and polarity on each input strip. 11 Electronic Crossover F R i SPEAKER SYSTEMS Setting the Electronic Crossover The active crossover centerpoint is 1600 Hz with a crossover type of 4th-order (24 dB/oct) Linkwitz-Riley, recommended. The full range active crossover should be set for 1600 Hz; however, if adjustments are made or variations are implemented do not use frequencies below 1480 Hz!Should budget allowances permit, limiters may prove a useful and an appropriate addition to the signal path, especially for the high frequency section. For more rudimentary clusters we recommend the EV EX23 Active Crossover which contains a 4th-order (24 dB/oct) Linkwitz-Riley and a stereo two-way section with continuously variable crossover frequencies from 80 - 8000 Hz. Each of the two outputs per channel has separate mute switches and level controls. [. . . ]


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