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View Full Version : Help with box for fi ssd 18's



dadydolas
05-05-2009, 01:45 AM
I'm gonna build a 20 cubic ft. box for two ssd 18's and I want to port it to 33hz. Is it ok for me to use 4 round ports 6x9.5 in. I used the calculators on the 12volt.com, but i'm not very experienced with calculations.

thanks

tez4life
05-05-2009, 02:55 AM
Why so large? Doesnt FI recommend something around 6 to 8 cubic feet per sub? The only plus with a larger box is the reduction in power handling.