Note that flat acrylic or wood (or any material) panels will bounce the sound energy directly back at the musicians, which can be fairly loud for them (and anyone on-stage.
If you utilize curved panels (4-8' radius) with the curve bending AWAY from the musicians (i.e. 'convex'), then the sound that is reflected is spread horizontally so other musicians in the pit area can better hear the musician directly in front of the panel, and similarly, the sound is spread across more of the stage. When the sound is spread-out, the intensity is less.
You can build fairly good curved acoustic reflectors by cutting a 2x6 or 2x8 in a chord arc that is slightly less than 4' across and either 5" or 7" deep. Then bend a couple of layers of 1/4" tempered pressboard or 1/4" plywood around the curved face and secure it with wood screws at about 4" o.c. along the curve. One chord brace at the top, and another at the bottom will usually suffice for a 3'-4' tall panel. Paint with fire retardant, then paint to suit the pit decor. The flat face of the reflectors would face the audience, and can be covered with fabric or drapery depending upon the look you want.
Connect the sections together end-to-end with some loose-pin hinges for easy disassembly. If you curve the whole row of panels, then it can be fairly well self-supporting. You may want to add some stage weights or sandbags in the deep part of the arc at the bottom for extra stability.
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Erich Friend
Theatre Consultant
Teqniqal Systems
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Original Message:
Sent: 10-24-2018 14:09
From: Tracey Buot
Subject: Acoustic shields
Hello Theatre Minds:
Has anyone ever used acoustic shields in their orchestra pits? I am thinking about using them for our musical. I am concerned about audience visibility.
Can you recommend a brand or company?
Thanks!
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Tracey Buot
Performing Arts Dept. Chair
Drama Director
Cambridge High School
Milton, Georgia
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