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In the Forum: Audio Discussions
In the Thread: Mastodont DIY Rack: Wall Mount?
Post Subject: HarmonicsPosted by Paul S on: 12/4/2013
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12(.5), 25, 50, 100, 200... Now you just need to track down the dominant mode. 25 sounds about right for a floor mode, but a long, loaded joist span might be way down there. And we still don't know how principal modes are "translated" by your rack. A "grouping" around 20/30 might be span + cavity resonances. I wonder how much hitting the rack feeds the floor/cavity(cavities).
Best regards,
Paul SRerurn to Romy the Cat's Site