Ok, I am in the process of selecting my car audio equipement for my truck. Before I hit this forum, I had plans on putting 2 audiobahn subs in my truck but now as I have read all the info on this site, I think I may change that and go with Cerwin Vega subs. The problem I have is each site I go to, there is no information on the airspace needed to run these subs. My problem is that I am putting these subs in an enclosure under the rear bench seat of my extended cab pick up that has limited airspace for each sub. I have not decided which enclosure I am going with but I have narrowed it down to 2 and one has available airspace per sub at .6 cu ft and the other is .7 cu ft. Can anyone tell me where I can find the info on these subs that will give me the airspace info I need? Thanks.