t.akustik HiLo-N25

I randomly placed these tiles on my workroom walls and the odd one on the ceiling. I affixed them with credit card sized areas of PVA glue, letting it dry slightly before pressing on. They are well and truly fixed on to the surface now. I am confident they can be easily removed because of the ease of PVA, should my wife request a full studio relocation - oh not yet please!!! : 0
The mike has been picking up a much less colured recording than before I had these foam panels in use. And some foam wedges too; perfect for my radio show. There are heavier gauge products for band rooms and bigger mixing rooms than I need, but these are absolutely perfect for a home voice over studio. I'll have to find a different room with plenty of sound reflection for singing now!! Of course I can put those post FXs to good use for that. I was impressed at how many fit in a reasonably sized and lightweight package; Thank you Thomann.

I got some of this 25mm foam and also some of the Adam Hall 30mm foam to tame the resonances in my small listening room. They both work but are quite different in the frequencies they reduce. This 25mm is noticeably better at reducing unwanted very high frequencies (the ones that make you wince), whereas the 30mm foam seems to work lower down the frequency range. It may not be entirely due to the thickness because they're clearly different materials - the Adam Hall feels more rubbery. After playing around for weeks swapping bits in and out I've ended up using a combination of both together (including some double thickness) plus a bunch of rockwool and a dedicated bass trap. In the end it's trial and error to get the treatment just right but it's really worth it. I have a high end Naim system and I've found that the room makes more difference to the sound than the equipment does.

Old carpets, curtains, even paper egg containers... All that finds its way into rehearsal rooms in a usually vain attempt to improve the room's acoustic and keep the loudness at a reasonable level by damping reflections.

Mind, this particular foam is not professional studio-grade thick, altghough it would certainly help in a small bedroom studio.

But it's cheap and effective to improve any band's rehearsal room which is why I bought several pieces. And it does the job - sound improved immediatelly, it's clearer, more refined and more detailed. Suddenly, people are not trying to overcompensate for not hearing themselves by turning the volume knob to 11.

A word of advice - if you don't have a long-term rehearsing place, you may want to avoid glueing the foam directly to a wall. Instead, use wooden frames or wires to hang them on the wall. This way you'll be able to take them with you anywhere.

In any case, experiement with the placement - every room is different. Also, you don't want to cover the entire surface of all walls and ceiling - some reflections are good for you.