I went up to Home Depot to get some sonotube for my next build, found out the 8inch comes in 3 different sizes....wtf
I ended up going with the largest one, 8.5inner diameter, they went down to about 7.5-7.75 I forget exactly, but none were an actual 8 inches in diameter. The 10s and 12s were also in different diameters.
What are the actual sizes you guys use? I figured the biggest was the best, doing a sc'ed DD 2515 in 4.25 cu/ft tuned in the low 30s for daily with a removable port and higher tune for comps.