I didn't have time to finish it off but, here was my general idea.
1. still have porting to allow less air in front of the ball... (not sure how this will work but, it's the concept idea)
2. porting to some degree may baffel it aka make it not as loud (again, not sure if it will less quite than a solid tube but, its a concept idea)
3. screws right on a 14" stella front... didnt model threads yet or the oring it would use to sit on th back area of the front but...again its all concept.
Hope to work some more on it tomorrow