I have done a quick search and have not found this idea posted. Is it possible to make a seating platform for my couch into a subwoofer? If I where to make a platform 4'X8'X1' that would roughly be 32 ft^3- bracing and porting. Would this work or is it to shallow? I could bump the area under the couch another 4" or so if that would help. I am starting to think this would be do able that way. Talk about a real whoopee cushion.