You are absolutely right about that the whole wall becomes the baffle. And it will reflect sound at all frequencys, early reflections sounds really bad if its in the midrange and tweeter area.there will be no reflections, the wall the speaker is mounted on becomes the baffle.
Thats the main reason why conventional loudspeakers always gain clarity in midrange and tweeter area if they are moved from the wall.
The SBIR is ofcourse something thats unavoidable with such a loudspeaker, but the problem area with SBIR is in 100- 250 Hz , not in the midrange and treble area where its much more problematic.
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