Owner`s manual

4 System Conﬁguration

4.2 Delay Systems

StudioLive

™

AI-Series Loudspeaker

Owner’s Manual

2M. Select this setting when the subwoofer is about two

meters from the full-range loudspeaker—typical when the

full-range system is on the stage and the subwoofer is on the

oor. A delay of about 5.9 ms is introduced to the signal that

is output through the subwoofer amplier.

The Alignment delay setting compensates for the

cancellation or reinforcement of low frequencies when the

same frequencies are reproduced by two sound sources

that are set some distance apart. Low frequencies in the

crossover region between full-range and subwoofer have

wavelengths that are several feet long—the wavelength

of a 150 Hz wave is about 7.5 ft—which means that

reinforcement and cancellation will occur as the waves

interact in the room. The Alignment delay provides

compensation for this eect when the loudspeaker is

about the same distance away from, or in front of, the

subwoofer, as specied in the setting. As room acoustics

will inuence eectiveness, we recommend listening tests

using the dierent Alignment settings, in conjunction with

alternate Polarity settings, to determine the best results.

If you are aligning for a custom installation, or the subs must be located some

distance from the main speakers, you will need to do some calculating.

Find the spot in the room where coverage from the main speakers and the

subwoofers overlap. Measure the distance from the overlap area to each

speaker location. Subtract the smaller distance from the larger. Divide

that number by 1,100 and apply that delay value to the speaker that is

closest. Keep in mind that the overlap area may be behind FOH.

Overlap

Area