User`s manual

B-Chain Alignment Procedures
Notes
5-15
If the sound quality varies significantly as you walk around, the equalization
has not been adequate:
• You may have over equalized. Check the positions of the controls; all should
be as close to 12 o’clock as possible.
• There may be phase shift present if the adjacent controls are pointed in
opposite directions, especially if you did so to eliminate a sharp dip that
resulted from physical problems in the auditorium (horn location, speaker
orientation).
• The size of the room may be a multiple of a given wavelength, wall surfaces
are parallel, or there may be a severe balcony overhang. There may be
reflection off the walls behind the screen or crosstalk from adjacent theatres.
• The seat and seat materials may be too reflective.
• The microphone may have been placed in an untypical position.
Repeat the procedure with the microphone in other average locations in the
auditorium. Adjust the controls for the best compromise to fit all of the
locations of the microphone.
Repeat Steps 16 to 20 for the left and right channels.
5.2 Setting Room Equalization