AP25 Installation and Operating Guide
Page 37
AP25 Installation & Operating Guide
Document # 9301H79500 Ver. 1.00
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 34.
Figure 16. Suggested Microphone Placement in 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
auditorium (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.
Note
: Be sure to open the curtains (if any) at the front of the auditorium.
