Aurica Sound Proofing Corner Bass Trap, 24 x 12-inch

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Did absolutely nothing to the bass in my room. I stacked 6 of these from floor to ceiling and measured the frequency response with a calibrated microphone and it's exactly the same as before right from 25 Hz to 250 Hz.

very useful. looking for a bigger pair now..

Cleans out some bass and a lot of treble. Its sort of midway.

Good quality

A s expected. Timely delivery

I'll give an OK rating to these. Apparently they are just thick diagonally cut foam sheets which also would tear if mishandled; but they are only good for mid-range frequencies and not so effective with lower ranges. I have an adequately large Jam Room of around 400 sqft and sound deadening is a must. Had to install 16 of these to get a relatively fair amount of bass trapping; this was AFTER soundproofing the walls with rockwool and gypsum sheets as well as wall carpet. Your room will require more wedged panels of 1'x1' or 2'x2' at certain parts of your room and only then will you get a proper absorption of all frequencies.I recommend sewing 4 towels together on a frame and using it. I got the best results due to this along with the bass traps

Advice: if you want these to work in your studio or room, then you need a minimum of 12 of these placed at four corners. If the room is bigger then 4 additional will be required.