For a quick good time, blankets...

Hey @tomcarr no problem at all.

I don't know about Prima. I found GIK and their prices and effectiveness so reasonable I'm a devoted fanboy. ASC is also very good, but pricey....

GIK also is really super helpful for the novice. Upload pics, diagrams and they'll set you up.

I tried this tweek 25 years ago. Ended up having my 1st child.:)

@acman3 That's the problem with science, danger lurks everywhere.

I think the most overlooked "room treatment " is the area front/between the speakers on the ceiling. Try the blanket treatment, especially if they are standard height, e.g. 8', etc., and near field listening arrangement. Helped my room to sound a tad warmer.

Planar dipole speakers benefit more from diffusion behind them than absorption, assuming they can be 5' or more in front of the wall behind them. That allows them to create the very deep and huge sound stage of which they are capable.