D
Diffusion
Future Astrophysicist
A company (who by the way I am not affiliated with) called ATS Acoustics has been selling bass traps for a while now, at prices much affordable than GIK and Realtraps. Most were hesistant to buy from them, however, as they did not have NRC ratings for their panels, only the materials used in their panels. But, finally, they now have NRC ratings on their independant panels by RAL, an acoustical testing laboratory.
These are their prices on each panel:
24x48x4 Panel - $43.95
24x48x2 Panel - $32.95
24x24x4 Panel - $22.95
24x24x2 Panel - $16.95
Here is a link to their 24x48x4 panels, where you can check out their NRC ratings:
http://www.atsacoustics.com/item--ATS-Acoustic-Absorption-Panel-24x48x4--1008.html
These are their prices on each panel:
24x48x4 Panel - $43.95
24x48x2 Panel - $32.95
24x24x4 Panel - $22.95
24x24x2 Panel - $16.95
Here is a link to their 24x48x4 panels, where you can check out their NRC ratings:
http://www.atsacoustics.com/item--ATS-Acoustic-Absorption-Panel-24x48x4--1008.html