Dr. Scott Lindgren talking about a more holistic view to loudspeaker design where room position and acoustics are taken into account as part of the whole design process.
complete rookie here, but the Extended Bass Shelf is an interesting point, because i have tried to make a pair with flat to roll off speakers QB3 i guess, and when i wired them up because of room gain they have a hump from F3 to about 100 or so hz and that is where the EBS dips below flat and if i understand what you are saying is if i tuned the boxes a bit lower in a bigger box that dip would be filled by the room gain and would get a lower flatter response. neat. i think what DIY box builders who want to avoid DSP stuff would make adjustable boxes, once with a movable rear panel to increase or decrease the box volume and a port that can be lengthen or shortened so people can set them up in their room.
2:45 funny you say that, a friend of a friend of mine makes coffin style speakers professionally, but we are german industrial goths so, it is practical therefore it looks nice. are they called avalon speakers?