http://www.subwooferspecs.com/jbl/w15gti-mkii Subwoofer specifications and info Mon, 06 Feb 2012 06:13:07 +0000 http://wordpress.org/?v=2.5.1 http://www.subwooferspecs.com/jbl/w15gti-mkii#comment-486 Ryan Sheppard Thu, 01 Oct 2009 15:49:59 +0000 http://www.subwooferspecs.com/jbl/w15gti-mkii#comment-486 i have a jbl 15 gti mk2 how many cubic feet should i make the subwoofer box? i do stereo competitions for mecca and i want it to be as loud as possible. your reply would be much appriciated. i have a jbl 15 gti mk2 how many cubic feet should i make the subwoofer box? i do stereo competitions for mecca and i want it to be as loud as possible. your reply would be much appriciated.

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