User`s manual

B-Chain Alignment Procedures
Notes
5-9
5.2 Setting Room Equalization
Compare the response displayed on the real time analyzer (RTA) for each
channel (L, C, R). All should show a similar shape. Any large differences
indicate faulty or misaligned crossovers or defective speakers. Speaker
phasing could also be at fault. See Appendix A.
Set the EQ controls on the EQ board (inside the front panel) to 12 o'clock.
Move the NORM/SUB MUTE jumper on the EQ board to SUB MUTE.