I was lucky and was able to source a super rare DVD release of Snow Trail/Ginrei No Hate...Toshiro Mifune's first film, it's about redemption and internal conflict.
Frequency absorption is directly correlated to the thickness of the panel. 2" does nothing for low frequencies.
Also, take a look at phase coherent diffusion that front wall as opposed to absorption with a speaker that on goes down to about 45Hz
why would you need three channels for a stereo pair?
a stereo amplifier is enough... two monoblocks are enough... Six channel amplifier if you want to drive all drivers individually.
Most equalizers are 'stereo' bases.
does any of this makes sense?
Oskar Sala plays as a student in 1930 on one of the first Trautonia constructed by Friedrich Trautwein 1929
https://www.youtube.com/watch?v=FrAcSxlpJgk