for use of a 2226 as a sub Only, in a 7Pi, I like the looks of a 5 up to a 6 cu' box in Boxplot. It is showing the least drop in response down to 20hz if the ported box is tuned to about 23hz. this is some what lower than a standard tuning of 30 or 40hz. are there disadvantages to a box tuning of 23hz i'm not seeing?

Also in a 7Pi corner horn. if I were to build just the chamber box, and position it exactly facing a corner, maybe even with a top on it. would this be equal to a whole cornerhorn? with out the extra piece on the top it could be a regular base reflex cabinet with more versatility?

thanks,

Bill

Corner loading has a specific requirement for best response. The alignment should create a conjugate of room response. What you want is a smooth rolloff, not a flat line with steep cutoff. The alignment used in the seven π provides the right curve for corner loading.