That is interesting about the lack of boundary settings in the DSP3200 Anthony-Howard. Are you certain of this? 'Cuz if this is indeed the case, that would suggest that the older DSP33 which definitely does include user-adjustable boundary settings during configuration, would be preferable for on-wall or on-ceiling use.

2ch: Jay's Audio CDT2 Mk3, PS DirectStream Dac, Oracle Delphi VI/SME V/Benz LP-S, Coincident Statement Linestage, Foundation Research V5 Phono, JL Audio CR-1 xover
M-ch: OppoMod 203, Anthem AVM60, 2x 557
2x or 5x ATC SCM20ASL mk2, 4x SCM12i, 4x Seaton Submersive HP, AM2.0 sub EQ
Video: JVC X990, Isco 3L A-lens/sled, 105" motorized 2.37:1 AT screen