So in looking at his options here are my votes... I also converted the metric measurements to cubic feet for us US folks
Blue = 3.53 cubic feet and 35hz
Pink = 2.82 cubic feet and 35hz
- 1st Option
Black = 1.76 cubic feet and 40hz
- 2nd Option
Green = 1.05 cubic feet and sealed
Those are net volumes. So with bracing and stuff, plan on a box volume around .17 to .35 cubic feet bigger depending on the extent of bracing.
All these options assume we use 3/4 MDF on all sizes and dont account for a double baffle...
1st Option - 2.82 cf and 35hz
2.82 cubic feet (~3 cubic feet total to allow for bracing) and 35hz seems to be a good compromise, and its actually Tux's recommendation in one of the threads.
I'd shoot for 2.82 cubic feet using a single 3" port and cut the port to be 3" long
Now he said the 3.53 cubic feet and 35hz is the "cat's meow", but I think that just gets to be too large for most, and would drastically increase costs to Erich for the flatpack boxes for the ported towers.
Given it is likely that 40" is the about as tall as we can go on these, I'd suggest a width of 12.25" and a depth of 13". This once you subtract .35 cubic feet works out to 2.824 cubic feet. It is a bit of a adjustment from what the stock baffles were previously. The extra width would allow for folks to install grills easier on these, but I'm not sure if it would also cause some weirdness with reflections of any kind...
2nd Option - 1.76 cf and 40hz
Alternately this is the smallest ported option, providing some better output to a decent range, and in a smaller form factor......
Size wise we have a lot of options, however I'm not sure what the min depth is on the box so I'm throwing out options.
Box 1: Assuming we still want 40" of height we could go with a 11 wide x 11 deep tower and still be above the suggested 1.76 cubic feet, even assuming lots of bracing. Not sure if thats enough extra width for grills
Box 2: 32" height x 12" wide h x 11.25" deep - this would allow for grills and also is about 1.78 cubic feet.
I am not sure how these measurements stack up to whats suggested for the 1299 Ported boxes as I think
was trying to make a single flatpack that could be used for both (with diff front baffles of course)...... Thinking this size wont work for that and would need to be wider (which would decrease the depth for the 893 to get to 2.82 cf, but still not likely work for the ported 1299)....
**Ninja edit** It appears the SEALED FLATPACK 1299 box as it stands would be 3.54 cubic feet as is, which is the largest option from my above graph...