Acoustic Foam Panel Size?

[Pwnsauce01]

Hello,

I was planning on purchasing acoustic foam for my studio, so I chose the cheapest kind that had 4 or more stars. I received them and I noticed the spikes were much smaller than what was shown on the Amazon site. I noticed that there were 1x12x12 size panels, and 2x12x12 panels. Is there a difference between those two? I realized i bought the 1x12x12, but now I am worried that the 2x12x12 are better.

 

[Quaiden]

Considering the 1 and 2 leading numbers on the types of panels appear to be depth... the 2x12x12 would have twice the thickness of the 1x12x12... That is the difference.

 

[americanaudiophile]

In general the thicker the panel the lower in frequency the panel will absorb sound. Neither will work for bass but the 2" will go lower.