For a quick good time, blankets...


and pillows.

Try them! On the floor, between the speakers and between them and your listening chair.

You may discover your speakers are capable of more than you thought.

Best,

E
erik_squires
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I mentioned this somewhere else, but remember seeing a picture of male model Fabio's system? Nice gear, (IRS speakers and Krell electronics iirc), but set-up in a marble-floored, glass-walled room. Ridiculous.
Interesting. In that environment, a bi-polar line array may actually be the best you can get.

Still, yeah, not where I'd put my best gear.
Candidly, some of my favorite listening is while being covered in a down duvet. Rather than go off the rails, I'll support the premise of the OP.