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Frequency Response:
Application Notes:
When hanging one or more microphones to provide coverage for a choir, instrumental or theater group, the best microphone position for optimum sound
quality and feedback control depends on many factors–sound system characteristics, construction of the auditorium or theater, and the size and nature of
the performing group. Two general rules to observe for the best sound coverage are (1) microphone position and (2) the "3-to-1 rule."
The first rule is to suspend the microphone approximately two to three feet in front of the first row of performers and two to three feet higher than the heads
of the last row of performers. The microphones are usually aimed to point at the last row of performers (see Figure 1). The second rule, the "3-to-1 rule,"
should be applied when more than one microphone is required, and their outputs are combined (as with a mixer). Following the 3-to-1 rule avoids the deep
voids and dips in frequency response that occur when two or more microphones "see" the same signal from slightly different distances. The 3-to-1 rule is
as follows: when multiple microphones are used, place them at least three times as far apart as any one of them is from the nearest sound source. Figure
2 shows a proper application of the 3-to-1 rule. The RE92H/HW may also be used to provide coverage for live theater applications (Figure 3). Most of the
action occurs at center stage, so the microphone should be positioned above and pointed to the center of the stage.
Figure 1: Hanging Mic
Placement
Adjusting the Microphone Direction:
For fixed installations, allow the microphone cable to hang for at least 24
hours so the cable can completely relax and establish a set. This allows
the microphone to be accurately positioned over a choir, stage or orchestra.
If the microphone needs to be pointed downward from its suspended
location, this can be accomplished by bending the wire director as needed.
If the microphone needs to be pointed in a different direction after installation:
1) Loosen the locking nut.
2) Twist the microphone, making sure the cable also rotates in the
wire director.
3) When you release the microphone, the direction it's pointing will
have changed.
4) Repeat this process until the microphone is positioned properly,
and retighten the locking nut.
12000 Portland Avenue South, Burnsville, MN 55337
Phone:952/884-4051, Fax:952/884-0043
www.electrovoice.com
© Telex Communications, Inc. 12/2003
Part Number 38110-289 Rev A
Polar Response:
Figure 2: 3-to-1 Rule
Europe, Africa, and Middle East only. For customer orders, contact Customer Service at:
Other International locations. For customer orders, contact Customer Service at:
For warranty repair or service information, contact the Service Repair department at:
For technical assistance, contact Technical Support at: 800/392-3497 or 952/736-4656
Figure 3: Live Theater
Placement
U.S.A. and Canada only. For customer orders, contact Customer Service at:
+ 49 9421-706 0 Fax: + 49 9421-706 265
+ 1 952 884-4051 Fax: + 1 952 736-4212
Specifications subject to change without notice.
800/392-3497 Fax: 800/955-6831
800/553-5992 or 402/467-5321
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