alright.. well.. maybe not NEEDED.. but i've been thinking, and i know similar projects have been done. Here's the skinny!
I've got a two way system-- and thanks to the research of zilch and a little help from doc edgar, and a whole lot of others, plus a lot of listening and soldering.. my system's been running for over a year (hooray!) and sounding pretty good to me.. but i've been wondering WHY it sounds so doggone good, when no matter how i think it out, it doesn't seem to add up!
heres what i have going on-- i have a pair of altec 414b's in 614 cabs. the crossover on them is a second order bessel (approximately)-- with a 4 mH inductor, and an 11uF cap, which i approximate at about 700-800 hz.
on the top, i have a community fiberglass horn- approximately the same size as the box-- i believe it's a 500hz horn-- and here's the wierd part. to get it to sound RIGHT-- i've got 5uF in a first order filter, with a 2uF bypass on an lpad. if i'm not completely wrong on the math-- that puts me at something like 13-1400 hz (on average... it's a little wavy in there for the 4552). seems like a pretty big gap between drivers-- but to my ear-- it sums out nicely..
now, i know there's loads of proponents of filtering down the mids, but that's just not the way i've chosen to do it... but my question IS- hearing no really apparent peaks, and seeing none in my crude measurements-- would it appear as if this is a plausible solution?
i'm not opposed to regearing-- but THEORETICALLY speaking.. i wonder what the speaker building community would think!
thanks all!