Just "dynamatted" my trunk with the cheap ass Grace Ice shield stuffs. 106sqft for 61.50 out the door at my local Lowes.
Still have more then half left and the difference is amazing. I had no trunk carpet or anything before this. The whole trunk would vibrate so bad with the new system, I was forced to try this. Sticks awesome even in 10*F conditions, CUT VIBRATIONS/RATTLING DOWN!!!
I can't believe it, and the subs sound much much clearer.
Sticks even to my back of my licience plate like a charm, one layer probably 1cm thick!!!
A+ buy if you looking for the best sound absorber out there.