Bass traps - foam cushiony items from Amazon ok?

+1 give GIK a call.

But gik has a 3 month wait to produce your order. I asked.

they do seem to know alot about accoustics.  Tough job.

Three month wait? I understand, we all get impatient. But the payoff at the end will be far greater than slapping up a few foam panels.

http://arqen.com/store/vicoustic-vari-bass-helmholtz-resonator/

These work very well..

Checking on a deal right now, I need 8, total of 4 boxes..

I'm thinking a little more Art Deco on the patina.. Touch of Queen Ann, in other words cock that crown to one side.. Just like the Yanks.. :-)

The vri-bass resonators are interesting, but expensive and they offer no measurements, or pictures to see what they look like in a room.
Compare to the GIK soffit traps, which are about $250 each and are also effective around 50 Hz.