PreSonus StudioLive 328AI - Manual (Page 30)

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4 System Configuration
4.2 Delay Systems
StudioLive ™ AI-Series Loudspeaker
Owner’s Manual
4.2.3 Real-World Delay System Example
The goal in a complicated system with loudspeakers distributed throughout
the venue is to delay each satellite system to its counterpart in the
main system (e.g., the left front fill to the left FOH loudspeaker).
• Delay the main system relative to the source on stage. On small stages
where the guitar amp and drum kit can be clearly heard above the
FOH loudspeaker system, delaying the main system can “move up” the
backline so that it aligns with these instruments and decreases blurring
in the mix. This will tighten the overall mix and give it more punch.
• Delay the front fills relative to the main system by delaying each side of the
system independently (e.g., delay the left front fill to the left FOH loudspeaker).
• Delay subwoofers relative to the main system. How you do this will depend on
how your subwoofer system is positioned and configured. In general, you will
want to delay each subwoofer relative to the full-range loudspeaker closest to it.
• Delay down-fill speakers (upper and under balcony) relative to the main
system, again delaying each side of the system independently.
4.2.4 System Configuration Suggestions
The following subsections will demonstrate some system configurations for
common rooms. The size and shape of your room and the application for which
it will be used determine, to a large extent, how many speakers you will need
and where they should be placed. In every situation, keep in mind two important
design factors: your loudspeaker’s coverage pattern and half-space loading.
Every full-range StudioLive AI loudspeaker offers a 90˚ horizontal x 60˚ vertical
coverage pattern. Be sure to pay close attention to these angles when using your
speakers. Rotating the cabinet changes the horizontal and vertical coverage.
When configured for stereo use, make sure the cabinets are not placed
too wide for the room or too far back into the corners. Too wide of a
placement will direct too much energy onto the walls and can potentially
add destructive interference to the room. Adjust the left and right speakers,
as well as the toe-in angle, to produce the best stereo image. If a room is
very narrow, a mono cluster might be a better choice than stereo.
Wherever you place your loudspeakers, you should be aware of half-space
loading. Half-space loading occurs when a speaker comes in close contact with,
or touches, a hard surface like a floor or wall. As its name indicates, this type
of summation happens when the circular radiation of the speaker is blocked
by a hard surface and forced to radiate in a crescent shape. Depending on
the proximity and position, there may be a boost in low-frequency energy.
Testing your speaker placement and doing some critical-listening tests will
Source
ZONE 3
SL312AI
ZONE 1
SL328AI
ZONE 2
SL328AI
MAINS
SL315AI