Continued from here.. GK club pt 11 WAY back with my GK 1001RB SELF INSTALLED STRAP HANDLES TO THE GK NEO 412 !! Help a ton !! 1st page gotta bring the pics !! Difference between GK 15"s & 12"s 15"s Tighter, grindier, more upper mid, modern, color your tone a bit more than 12"s which are a bit warmer, even volume through the range, less color, more "old school" Choose 15"s if your bass or amp is muddy, the 12"s if your bass or amp is too clanky & aggressive. AND YES A GK 4 pin CABLE WILL WORK IN ANY BRAND AMP\CAB SPEAKON JACK JUST FINE!! Another brand 2 pin speakon cable will work with GK cabs\amps UNLESS you try to biamp with the 700\1001\2001RB.