Not that I am aware of. You could look for a sub without any active eq or room correction and see what their group delay is.
You can always experiment with sub placement but usually you’ll want to place a sub in a location with two boundaries - wall and floor.
If you have a sub that will move a lot of air, at least a 12” driver and/or passive radiatior combo you may get enough output to get a satisfactory result with a mid-room placement.
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Main System:
Amati Futura Mains
Amati Homage VOX Center,
Proac Response 1sc Rears,
Three MC2301's for L,C,R
MC 602 for the rears
C 1100, MX 151, MCD 1100, MR 80
Nottingham Dais with Wave Mechanic
Sumiko Palo Santos Presentation
SurfacePro 3, RPi 4, ROON, WW Starlight Platinum USB, Schiit Yggdrasil, Benchmark DAC3 HGC
MX 151, OppO BDP-95, JVC RS-500 DILA projector, 106" diagonal Stewart Luxus Screenwall Deluxe with Studiotek 130 G3 material.
Lake House:
Ohm F, MC 275V, C2300, MR 77, Rega P3
OnDeck:
McIntosh MAC 4300v
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