I think you need min 4x excursion of the driver, for a passive radiator. Wild guess is that it would need need at least a 30 mm peak to peak PR in an 8"
Here's some reviews of medium crown staplers. Mainly you see the galvanized staples with glue (the glue is activated by the heat of penetration). Very strong with aspects of permenence. toolsofthetrade.net/articles/showarticle.asp?articleID=2012
I'm in an apt. so reference levels are not what I'm shooting for. However it is a home theater, and I would like to have the feeling of really low bass, in the few moments it's there. Small size living room. Trying for low distorsion, lowish group delay, very low budget. Will the 18-25 hz not...