Hello everyone, n00b here. I have an old "The Crunch" 12" sub that I want to build a box for and I can't find specs for it anywhere. It's an 8ohm driver. I have had this thing for probably 20 years now. I have a nice RF Punch 60ix and 40i to go with it too I had them in my old car but pulled them out after I got into an accident. They were in my 90 CRX in a sealed isobaric box facing each other. I didn't realize the 2nd one was blown until I tested it the other night. So, now I'm left with the working one. The box was 1 ft³ with both subs if that helps any. I also have an mtx rtx01a crossover to throw in the mix as well. I hooked everything up to a modified ATX 12v power supply in my house and used an Mp3 player as the input and everything works. I bridged the connection to my 60ix and ran it through the xover. It nearly blew my eardrums when I turned on the power supply. Apparently it didn't like the volume level that I listen to my mp3 player through normally So, back to the box. Any suggestions? I like tight, punchy bass. I listen to alot of industrial and rock but I'm open to just about anything. I'm now in an 05 Altima with the Bose system. I just recently found out a way to tap into the system without a LOC so I can get a set of RCA's before the stock amp which will allow me to add the sub in. Any help will be appreciated.

 

Isobaric boxes are usually designed to cut the box volume in half with a push-pull movement of the subs so I would assume that the sub would require a max of 2 cubic feet per sub if the original isobaric box was 1 cubic feet for both subs. Ported or sealed which ever was the original box design.