Wierd xover point (Off Topic)
There is a post below "I'm in" asking about xover points. I had a strange experience with this crossing Altec bass bins over to my Oris 200 (AER) horns. I had to push my xover point all the way down to around 90 hz to get a seamless match. I confirmed this with 2 different xovers and I also measured the xover outputs with a VOM and signal generator connected to the input. The slope of both xovers I have is 24 db/octave. The bass cabinet is an Altec 515-8g in a BR enclosure with a 135 hz rectagular tractrix front loading the woofer.
The stock xover kit I bought (Welbourne Labs) came with a 220 hz xover point that did not work at all.
Any thoughts on what's happening? Tractrix attentuating this much?
Jim D.