Datasat RS20i Specifications download pdf (Page 42)

RS20i Installation and Operating Guide Page 42

RS20i Installation & Operating Guide Document # 9301H52900 Ver. 1.01

2.10 Sound Level Calibration using 1/3 Octave EQ

Adjust the alignment of each individual channel. There are various approaches to audio

alignment, and the procedure presented below is offered as an example, not a requirement. The

intent is to show the RS20i functions that are relevant to audio alignment.

Caution: Before proceeding with the room equalization, it is imperative that the loudspeaker and

crossover systems be properly aligned. Issues like speaker phasing and horn tilt need to be

checked. When using crossovers the low, mid and high frequency drivers must be balanced to

produce a relatively even response from 100 Hz to 5 Hz. See Theater Equipment Check, page 439.

Figure 22. Suggested Microphone Placement in Large Theater

 Using a single microphone is not recommended, but if necessary, the best location would be

two-thirds (2/3) of the way back and one-third (1/3) of the way in from the side of the theater

(that is, slightly off-center). This position is also best for final SPL readings.

 If using a multiplexed microphone system, set up the microphones according to the

instructions provided with that system.

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Datasat RS20i Specifications Page 42