2 Pack Delta Bass Traps for Wall Corners, 16.5"x15.8"x12" Acoustic Foam for Sound Absorption, Super Chunk Bass Traps for Home Studio and Room Acoustic Treatment

I inflated these with water per the directions and squeezed out as much as I could by putting them on a towel and kneeling on them with all my weight. Eleven days later and there is still water seeping to the surface of both of them. I leave them on the floor overnight and the next morning I see a small wet area so I pick them up and try to sling them between my legs to force the water out via centrifugal force, but they're pretty big so this isn't an easy task.I did try putting them outside in the sun the second day I had them, but I was concerned the UV rays might deteriorate the foam so I didn't pursue that for long. Anyway, tomorrow is day 12 and I think I might finally be to the stage of hanging them.That brings up the next concern which is that these are relatively heavy compared to other bass traps and my heavy duty 2-sided tape doesn't stick to this foam very well. I thought it would since I used that tape to hang a pretty heavy exhaust hood over my stove and it held that with no problem. But it barely sticks to this foam so I think the only thing that will work will be spray-on glue. Unfortunately I don't know where I want these traps yet and need to be able to move them around, so gluing them isn't a practical option for testing these out. I'm stumped at this point on how to hang these in a manner that allows for figuring out where I want them. I have some corner bead from doing sheetrock work that I could construct a frame with, maybe I can glue them to that and attach the bead to the wall with tape, but I'm still thinking about this.I have some other bass traps which I reviewed and gave 5 stars because they were easy to mount and I thought were making a dent in the reflections in my room. But now I see that those are quite flimsy compared to these and I should have rated them a 3. These are much more dense but much more expensive too, and with all the hassle of trying to get them ready, I'll rate them a 4 assuming they are going to out-perform my others (which should be at a 3.). If they could make these spring back to size without the water, I would give them a 5.

First, I will admit right up-front that I haven't placed these yet. Why, you ask? Because I followed the instructions for getting them to expand. I'll explain that in a minute. For now, know that I'm giving these 3 stars not because they don't work, but because the instructions for expanding them are just wrong.Upon receiving, you note that they're compressed down to a small size, which saves on packing cost. And this is perfectly possible, given that these are just giant, thick, triangle-shaped foam wedges. When you take them out, they're very flat.Here's where things go awry.The instructions state that you're supposed to soak them in water for 5-10 minutes, "wring them out" and then place them in front of a fan to dry for however long that takes. I put them in water for about 5 minutes on a Sunday. It's now Thursday and they're still not dry. You can't just 'wring them out' because they're REALLY thick and dense; they hold quite a bit of water. I got them as 'wrung out' as I could and then put them in front of the fan outside. They weren't dry. I put them inside in front of a heater fan. Still not dry.Maybe you'll have luck if you simply let them 'inflate' to their normal size and for forgo the soaking.I'll come back and update if I'm ever able to use these.

These triangular bass traps are a very dense foam that do help to control the bass in the corner of your room but don't expect a night and difference.One tip to get them to expand back to their original size after you receive them is to NOT soak them in water as the instructions say. As other reviewers have noted, it may take them a couple weeks to completely dry out.Instead, just let them sit by themselves on the floor or on an open shelf and they will expand back to their original size in 24-48 hours - all on their own. The soaking in water technique might get them to their original size quicker but you will be fighting to get all the water out for many many days.

I've been using sound control materials for decades, in commercial and residential applications. The professional products generally work well, but are horrifically overpriced for what you get. "Personal" sound abatement materials generally look the part, but don't have the performance you'd want. The Foroomaco 2 Pack Delta Bass Traps (16.5"x15.8"x12") definitely fit into the latter category. To be fair, you're getting two bass traps for about $43 (with 5% off coupon, at the time of this review). The first indication that something may be off is the weight... the two traps in this package weight about the same as a single low-end "pro" trap. The second red flag is that there's no NRC chart to be found, which would indicate the performance of the trap at various frequencies, in controlled testing conditions.But, hey, each trap is 1/3 of what you'd pay for a low-end "pro" solution. Do you get 1/3 the performance, and therefore a similar level of value per dollar? In a word: maybe. I tried the Foroomaco traps in a challenging room, where ANY level of abatement is pretty noticeable. The room is made up of concrete floors, with cinder block walls, faced in insulation and sheetrock. I experienced the room with my existing Acoustics America Mega Bass Traps in and out of the corner, and with the Foroomacos. My experience? The Foroomacos are maybe midway between the bare corner and the Acoustics America traps. Considering that sound pressure is logarithmic, that's maybe not the most impressive performance, but it seems to be in line with the price - in terms of value per dollar. Therefore, if you're on a tight budget, these may be the solution for you... however, if you can afford high bass trap performance, you should really look upmarket. Conditionally Recommended