I want to start building a box for my 12 inch sub that is on a plate right now. My subs are very old and came with the car when I bought It four years ago. They still work and sound good. I am only going to build a box for one of them. They are Rockford Fosgates ,punch's or something like that. How would I find out what size of a sealed box I would need to build for one of these or if they are even built for sealed boxes?

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1987 Iroc 350
GTS headlight/tail light covers
Camaro SS Wheels w/Sumitomo HTR ZII 275 rear, 255's in front
K&N filters
Adjustable Borla cat back
Large tube runners
ported plenum
Holley afpr
SLP 1 3/4" headders (not installed yet)
FUTURE GOAL:
To go really F'in fast!!!

Some pics of it at
http://albums.photopoint.com/j/Album...949&Auth=false

 

Try this https://www.thirdgen.org/newdesign/tech/subwoofer.html . Hope it helps.

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Mike Kenny
Current: 1991 RS 305 TBI
Past: 1990 RS 305 TBI (A woman forgot what red lights are for)
Current: mostly stock - newer 305 w/ 12,000 on it
Eclipse speakers all around w/ 10" tube powered by a Alpine V12 in back
K&N filter w/XStream flow lid - It is sweet!!
Future: 2" Cowl hood