[quote author="SSLtech"]Anyhow, I think I must've put 47Ω instead of 47k or something equally silly! -Perhaps I put 1nF instead of 1µF... who knows, it's a lot of zeroes either way![/quote]
Hey, you wouldn't be the first. Several years ago I helped my supervisor at the Speaker & Stereo Store build a set of super speakers, but the %##$&^% things never sounded right; there was a real suckout in the upper midrange. We checked everything in there, replaced drivers, looked at diffraction error...but when we measured the output of the crossover, instead of rolling off at 2500 Hz the thing rolled off at something like 1000 Hz.
After six months -- six months -- of sleuthing I finally took another look at the crossover board. And zeroed in on a film cap which was supposed to be 1uF...it was one of those with a multidigit code on it instead of simple labeling. When I measured, it was 10uF; I went out to the front of the store and looked into the bin, and there were still several 10uF caps in the 1uF bin. Which, unless you paid close attention to the code...I wonder how many other people built bizarre-sounding speakers because those caps were in the wrong bin.
Anyway, the speakers sounded great once we put the right caps in, and I got done kicking myself.
Peace,
Paul
