Horizontal 1/3 Octave Polars
Architectural Specifications:
The loudspeaker shall consist of a 135 mm (5-1/4 in) low frequency transducer, 20 mm (3/4 in) high frequency transducer, and frequency dividing network installed in ported enclosure. The low frequency voice coil shall be 25 mm (1 in) in diameter.
Performance specifications of a typical unit shall be as follows: Usable frequency response shall extend from 70 Hz to 23 kHz (10 dB below rated sensitivity, in half-space, with no external equalization) and the speaker shall be flat from 130 Hz to 14 kHz (typically ±1.5 dB). Rated power shall be at least 200 watts continuous program power for 100 continuous hours duration (defined a 3 dB above a test signal of filtered random pink noise conforming to international standard IEC268-5). Measured sensitivity shall be at least 87 dB-SPL (at 1m [3.3ft] with 2.83V input, averaged from 100 Hz to 10 kHz).
The input shall be switchable for use either at nominal 8 ohms, or on a 70.7V or 100V distributed speaker line via a built-in 60W transformer. Selectable taps shall allow operation nominally at 15W, 30W or 60W from either a 70.7V or 100V distributed speaker line, plus 7.5W from a 70.7V line only.
The system shall be protected against damage from occasional over- powering via full range limiting that limits the power to the network and transducers. The limiting system shall be inaudible during activation. The high frequency transducer shall be horn-loaded to more evenly cover a nominal 90° horizontal by 90° vertical area.
The enclosure shall be constructed of high-impact polystyrene and the grille shall be made of treated stainless steel for protection against the elements in outdoor applications, and for easy paintability of both cabi- net and grille. The grille shall be secured via screws to keep it in place when facing downward.
The low frequency transducer shall have a polypropylene-coated cone and a butyl rubber surround which shall extend seamlessly over the edge of the speaker frame to protect against the elements. The high fre- quency transducer shall be constructed of polycarbonate, reinforced with a titanium film for additional weather resistance. The system shall with- stand Mil Spec 810 testing with specified durations for exposure to the following environments with no effect on its acoustical performance or structural integrity: salt spray (method 509.3), temperature (method 501.3 and 502.3), humidity (method 507.3) and ultra-violet (method 505.3). The system shall have an IEC 529 splashproof rating of IP-X4.
For theft deterrence, the installation access area shall be hidden behind a snap-out cover, and the access area shall be on the front of the loudspeaker for ease of installation and adjustment. The loudspeaker shall be rotatable over a minimum of ±35° in all directions via a ball- type mounting system. The ball mechanism shall be internal to the cabi- net to allow low-profile mounting and better stability via short moment arm. The logo shall be rotatable for proper orientation when the loud- speaker is mounted horizontally or vertically.
The external wiring connectors shall be screw-down terminals. Overall cabinet dimensions shall be no greater than 236 high x 186 wide x 159
mmdeep (9.3 x 7.4 x 6.3 in). and shall weigh no more than 4.0 kg (9 lb). The finish shall be lightly textured black or white.
The system shall be the JBL Model Control 25AV (or Control 25AV- WH) with included InvisiBallTM mounting system.
