Placement Suggestions
for Wall System
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The basic placement strategy for Churches and meeting rooms is really quite
simple based on two facts...                                      
1- The lower area of the room is absorbed by the furnishings and people for the
most part and, 2- The speakers are always at the front firing to the back of the
room. The side walls can echo between them from the people but the side walls
will only be "grazed" with energy from the speakers while most of the energy of
the sound system will eventually reach the back wall. Therefore, keep the
absorbers approximately 7 ft. above the finished floor height and space them from
2 to 4 feet apart on the back wall and 3 to 6 feet apart on the side walls. This will
give some side to side control but most of the energy will be absorbed when it
reaches the back wall. A few on the platform or stage back wall at approximately 5
feet above the finished floor height and 2 to 4 feet  apart will help keep monitors
from reflecting off the back platform  wall into the microphones. This will help you
to control feedback problems.
To learn more about acoustics, go on line and get Jay Perdue's books on acoustics.
They are short, sweet, and to the point, and very inexpensive. One is about Church
Acoustics and the other is about educational acoustics, but they both speak to
acoustics in general and will shed light on any acoustical situation. 
tPlacement Strategy for Churches
           and Meeting Rooms
A box contains 8 specially built 2' X 4' x 1" acoustial absorbers, 8 patented "Black Hole Acoustics"tm Mounting Systems, all necessary mounting hardware, mounting instructions and placement suggestions for only $715.00 or we will sell a 4 panel acoustical equivlent to what others would sell in carved foam or fiberglass absorbers for $500.00 for our price of only $422.50!

2" thick absorbers can be purchased for extra low end absorption as well as  25% more overall absorption for 25% more money. That works out nicely! 4 absorbers per box for
One box treats a home theatre or recording studio with a 14' X 20' room. Two boxes treats a room that would be large enough to seat 25 people, three boxes for a room large enough to seat 50 people, four boxes to treat a room that would seat 100 people, and one box per 50 people after that. Remeber it's about how many the seating capacity would be not how many are actually in the room at the time. For more, on this see the installation and instruction page.