johnnycamp5 Messages: 356 Registered: June 2015 Location: NJ
Grand Master
Yes that's a good bit of info on vertical nulls. I've seen it before.
Just to be clear..
the phenomenon I was experiencing, with the bass punch diminishing when standing and returning when sitting, was happening when using my flanking subs located just behind and outside of each main.
I then raised the subs up about two feet (to create more vertical separation from the main it was flanking) but the vertical null still existed.
It wasn't until I brought them up to about 2' below the ceiling (to center of woofer) that the null between standing and sitting disappeared.
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