Anyone have thoughts on whether it is better to seal the air gap behind the MLV, or hang the MLV so it flaps. We're looking at making corner traps, and have (mild- yellow on the Bob Gold analysis) modal warnings at 25.7 Hz and 34 Hz.
It seems like sealing the gaps tunes the trap???? Not sure how to calculate this for corner units though. Any ideas welcome!
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You're right, sealing would make it a tuned box. In the (few) installations I've done with MLV I've left it hanging free, and I've always been happy with the results.
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