Thanks for the offer Mike, it is appreciated!! You have convinced me to make the purchase. I feel like living dangerously, so I will buy them first then tell the good wife second!! When I am in a position to do the enclosures I will get back to you to obtain the required measurements!!Thanks for the compliment. The only plans I made were the cabinet size drawn on a piece of paper. The bracing was figured out as I went along. The cabinet dimensions are 38" wide x 23" deep x 30" tall. I don't remember the bracing sizes or their exact placements, but if you do get the "go ahead" to build, I'll gladly pull a driver to access the inside and get you the required measurements.
No such a thing. We all have to learn sometime! Here's a simplified explanation. If you play test tones from 80 hz down to 20 hz, and they are all the same loudness, a graph would show a straight line. This would be called a flat frequency response. If at certain frequencies, say 25hz, it is 6 db louder, then a graph would show a peak at 25 hz. You would use the BFD to apply a filter at 25 hz to cut the peak. In the real world there is no straight line in the graph due to the way sound waves interact with a room, it has peaks and valleys and you use the BFD to smooth out the frequency response as much as possible. To see how subs measure in the room, head over to the REW forum and snoop around. Lots of posts there showing the in room response graph, and then the graph with the BFD smoothing it out as much as it can.Sorry to be an annoyance