so bass traps in corners do nothing, it seems we have been fooled. or are being fooled.

Guys, I feel it would be remiss of me not to warn you about Dennis Fooley. Apart from him frequently offering dubious information he has spent time in prison. Best to steer clear.

Wow, aren’t you something special? So, a guy who spent some time in the big house for a drug conviction or whatever can’t lead a normal life, run a legitimate business, thereafter?

Plenty of white collar crooks in this country (who do way worse) never make it to the big house because they paid a handsome sum to a gang of lawyers. Move on!

@deep_333 - so.... you are a judge of First Amendment here? Supreme Ruler of Truth? Yeah, people post relevant information. So yeah, move on.

In my experience, acoustic treatments made a rather significant improvement in my small (12x16 and 13x14) listening rooms.  Stacked GIK 244s (w/diffusion plates) in the front corners, two of the same ones on the ceiling, 244 w/o plates on 1st and 2nd reflection points and centered on the front wall.  And finally one behind the listening seat.

I didn’t put them in one by one and listen to the differences.  Everything went in at the same time, except the ceiling, and before vs after was quite dramatic in my room.

@bdp24  Below 60Hz is sub-bass? The lowest frequency produced by a standard 4-string bass (acoustic and electric; why do people insist on calling an electric bass a bass "guitar"? That’s an oxymoron!)---the E string played "open"---is 41Hz. That’s not sub-bass, that’s bass.

In general audio terms sub bass is defined as 20 Hz to 60 Hz. I used to play the the acoustic bass, aka contrabass, aka double bass. Musical instruments never adopted the prefix "sub." 41 Hz is the lowest note. The strings on the bass guitar are tuned the same, so it could be called the contrabass guitar or double bass guitar! They call it guitar because it's played sideways like that. You can get an upright electric bass. I've never played one.