acura3.2tl 10+ year member
Member
I just got my TC sounds ultra 18". I am going to put it in a 3.4ft3 box tuned @33hz. I was wondering... would a port that is 3" x 17" be big enough for this sub and box?
37 inches per cube. //content.invisioncic.com/y282845/emoticons/crap.gif.7f4dd41e3e9b23fbd170a1ee6f65cecc.gif SMFH. what calculator are you using exactlyAccording to the port area calculator on Car audio, tuned at 25 HZ you will need 126 square inches of port area. It will be more with higher tuning. Sounds super high I know. The calculator takes into account the subs diameter and its X max.
my thoughts exactly, thats what ive had my last couple 15s in.3.4 cubes is extremely small for an 18 lol