4" Carpenter memory foam behide your speakers ???

I see so u purchased a whole memory foam mattress and used the memory foam topper to cut. Thats a an idea I will look into this. Thanks for the reply.

its that foam thats used in many highend pillows for the most comfort for neck pain...foam that is squishy and then returns to its original form. You can get them at most bed,bath and beyond stores also targets and walmarts now carry them. You might be able to buy it in larger sheets.

PS the properties of the material make it hard to hang on the wall as the force of gravity might have a tendancy to deform the material over time.

Yes basically that's it. They come in all sizes and also very large style body pillows. I would think that the larger size body type could be made into a very good tube trap.

HiFisoundguy may I ask you to be more specific with your finding. How did you mount them and did you use the memory foam pillows or? How large a foam did you use and placed directly behind speaker or up more towards ceiling.