Hi all, another bass speaker question!! I'm a aware that dimensions need to be considered when replacing a speaker so i need some advice please. I have a Harley Benton B115 cab WHD568 x 500 x 458 mm vented at bottom. I need to know if i can replace the standard speaker to an Eminence Delta or similar. Will the Delta or Legend range work in this cab? I don't want to upgrade only for it to sound terrible. Heres the bass cab link: http://www.thomann.de/gb/harley_benton_bb115t.htm Can anyone help?