PreSonus StudioLive 328AI - Manual (Page 25)

21
4 System Configuration
4.1 Recognizing Problem Rooms
StudioLive ™ AI-Series Loudspeaker
Owner’s Manual
4.1.1 Vertical Coverage
It is important to keep in mind that vertical coverage is just as important
as horizontal coverage. If you are using a ground-stack approach with
pole mounts, make sure your coverage matches the listening plane.
Suspension of speakers will provide even further control.
Each StudioLive AI-series full-range loudspeaker features dual-position pole
mounts. Using the 10˚ downward tilt mount will focus the loudspeaker’s
energy onto the audience and avoid destructive reflections. This is ideal for
situations where the loudspeaker is mounted atop a tripod stand and placed
on a stage, or where the pole-mounted loudspeaker is on the floor and
the coverage area is relatively shallow (conference, coffee house, etc.).
Flat Floor with Stage
-10˚ Tilt
Elevated Floor
No Stage, Flat Floor
-10˚ Tilt
4.1.2 Wall and Corner Loading
Very low frequencies are not directional, so they radiate out of the sides
and back of the loudspeaker, as well as out of the front. If you place a
loudspeaker against a wall, the rear sound propagates back into the
room. This can increase output of bass frequencies as much as 6 dB,
and as much as 12 dB if you put the loudspeaker in a corner.
In order to have the most control over your sound, it’s best to always
start with the flattest response, so you normally should avoid wall and
corner placement. On the other hand, if you need some extra bass boost,
this technique may be worth a try. It is important to be aware of what’s
happening and be prepared to take advantage of it or compensate for it.
Power User Tip: Because a floor monitor placed on the stage is unavoidably
subject to half-space loading, the Monitor DSP contour in your StudioLive
AI-series full-range loudspeaker is specifically designed to compensate
for bass buildup and maintain a tight mid-bass response.