Originally posted by Chachi
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Bandpass boxes work well for competition because they will produce high a SPL at one frequency, which is often all that's required for bass-off style competition.
I know a couple of guys who have Cd's with sine-wave tracks on them that play a constant 40, 50 or 60 hertz tone. If you have a bandpass box tuned for that frequency you can get more DB per watt in theory.
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