I had don build me a custom "bright" cab awhile ago. It's like the old trace elliot or hartke top box. Mine has two 5" drivers firing forward and the one on each end at a 33 degree angle to cover more area since high frequencies are very directional. It's crossed over at 1.6k so it's just for more clarity and works well on top of a cab like the bergantino nv610 to at more clarity. I have pics that I'll post later and will only answer PM's. $200 plus $30 shipping in US.