Community R2SUBZ Manual do Utilizador descarregar pdf (Página 19)

Community R-Series Application Guide — Page 13

Qty Model Comments

2 R.5-66Z Used at each end of press box for left and right bleachers coverage

6 R.5-94Z Distributed along the overhang of the press box for bleachers coverage

2 R1-66Z Used at each end of press box for distant bleachers or concessions coverage

Based on cost comparison scale: $ = lower cost, $$$$$ = higher cost System Cost Estimate - $$

R.5

erage loudspeakers at the front (center) edge of the roof. Delay them, if necessary, to match the sound from loudspeak-

ers on the press box.

If there’s a light pole behind the press box, this is another potential location for field coverage loudspeakers. Install them

high enough to cover the field without overpowering listeners in the bleachers. Delay other loudspeakers as needed to

avoid an artificial echo.

A central location for field coverage loudspeakers will avoid the artificial echo problems created by a two-source design.

If it’s necessary to cover the field from two, widely separated loudspeaker locations, try to minimize the overlap in cover-

age. That is, aim the loudspeakers so their coverage patterns meet in the center of the field and use minimal overlap.

Feedback, Artificial Echoes and the Announcer Echo

A distributed system like this will not cause artificial echoes unless field coverage loudspeakers are remotely located or

split (see above). However, feedback is possible because the loudspeakers may be near the press box announce booth.

Provide a head-worn mic or just shut the window to minimize this problem. If the system includes field coverage, an an-

nouncer on the field will hear an “announcer’s echo”. See Page 9 for ways to minimize this problem.

Alternate Loudspeaker Choices and 70/100 Volt Systems

Add R.5SUB or R2SUBZ loudspeakers for extended low frequency response. If the electronics rack is remotely located,

most Community R-Series and WET Series loudspeakers are available in 70/100-volt versions. Higher-powered versions,

like the R1 or R2, can utilize optional, external 70/100-volt transformers. This makes it possible to use smaller loud-

speaker wire which helps reduce the overall system cost.

As a lower-cost design, substitute Community’s R.25-94Z (or TZ) for the R.5 models and our R.5-66Z for the R1-66Z.

This design will cover the audience well but at a lower level than the original design.

R-SERIES LOUDSPEAKERS USED IN THIS DESIGN

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