PRESONUS studiolive III series Owner's Manual page 105

11 Resources
11.7 Using Output Delay
Mains delayed
to backline
The goal of distributed sound is for the people in the back row have the same
listening experience as the people in the front, but it isn't as easy as just bringing an
extra pair of speakers. To create a distributed sound system, you need to delay the
signal going to the additional speakers.
Front Fill delayed
to Mains
1. Once you have positioned your delay systems, measure the distance from the
left front-of-house speaker to the closest delay speaker (most likely, the left
side delay speaker). Multiply the distance by 1.1 (if measured in feet) or 0.34 (if
measured in meters).
2. On your StudioLive mixer, select the FlexMix driving the output connected to
your left side delay speaker and configure it as a Subgroup.
3. Set the Output delay on your newly created subgroup to the result of
your calculation.
4. Repeat steps 1-3 with the right side of the system.
5. Once you have positioned and delayed your satellite system, use an SPL meter
to match the output of the main and delay systems at the measurement point.
For example, if you are standing 30 feet from the left side of the main system and
10 feet from the left side of the delay system, and the output of the main system
is 85 dB, then the output of the delay system should also be 85 dB.
Mains delayed
to backline
It should be noted that frequencies in the sub-bass range of a delay system do not
require distribution. In fact, a delay system's high pass filter should be rolled up as
high as 300 to 400 Hz to avoid sound going back toward the stage as low frequencies
become omnidirectional.
Under balcony
delayed to Mains
Front Fill delayed
to Mains
StudioLive™ Series III
Owner's Manual
101