"Henry" wrote in message


In article , "Ethan Winer"
ethan at ethanwiner dot com wrote: snip

"Lacustral" wrote in message


is it normal to hear a slight increase in hiss from the tweeter just
below the crossover frequency? mine put out extra hiss with the note
from 1000-2000 Hz. Not terribly loud but quite audible

In fact, speakers and crossovers by definition cannot create
hiss, only amps and preamps and other electronic devices.

Ethan, have you considered the possibility of an air leak in a speaker
enclosure? If you move air through the right shape of leak, you'll
get a "ssss" sound. Try voicing the "ssss" sound, and you'll see
what I mean,

Right, but that presumes serious amounts of sound being generated at some
low frequency, which modulates the hiss in a way that is pretty obvious and
diagnostic.

Lacustral seems to be talking about noise at low volumes.