Does Sonotube + 2 Shivas = Bass Nirvana? (1 Viewer)

[Phil Olson]

Tom,
By the way, from what I've seen in other threads, it sounds like MDF would be best for the endcaps.
Also, what driver orientation would you suggest? I was thinking one woof pointing out of each end. Wired ++,-- or +-,+-?
Also, how would you improve on my proposed design? Any suggestions? I picked the overall height to be able to enclose the tube with four 4' plywood sides, as I mentioned earlier, (WAF).
Also, if anyone wanted to see my modeling of various ported/closed enclosures, I saved the graphs in jpeg. They are big, (~100K each), but I could try to post them in a separate thread if anyone is interrested. E-mail would be another alternative.
Phil

 

[Nick Streit]

Phil,
Wouldn't mach .12 give some port noise? Would it be best if it was kept below .05?
Nick

 

[Phil Olson]

Nick,
From what I've read, anything below .2 is ok. WinISD shows any number above .16 in red or below .16 in green, so their threshold is about .165. Perhaps Dan W or Tom V would correct me if I'm mistaken.
Phil

 

[Tom Vodhanel]

>>>Tom,
2 Shiva's
24" Sonotube 46" long
2 3/4" ends for internal 44.5" Sonotube
This would leave 11.65 cu ft or 329.9 Liters
Subtracting 6 Liters for the two drivers leaves 323.9 Liters
Subtracting 9.4 Liters for the vent leaves 314.5 Liters
Adding some stuffing, I figure the net would 'look' like 330 Liters, (up about 5%), to the woofs.
Tuned to 16.5 Hz

 

[Parker Clack]

Phil, Tom and Dan.
Great thread. I am going to archive this so I would suggest starting a new thread to continue the discussion.
Parker