I was remined earlier today of an incident that happened to me years ago, I
was working as an installer at the time and a customer came in with a used
Pyle subwoofer and wanted an enclosure for it, so not having the specs
readliy available I called Pyle and spoke to a tech, after giving me his
guess at ported enclosure airspace, I said "uh... ok and what do you
recommend for the port length if I am using a 3" diameter port. He says
"Just cut about 12" of port then insert it into the port hole on the
enclosure, the slide it in and out of the box and see at which length it
sounds best. Then when you get to that spot cut the port." LMAO, I tried to
explain the moving the port in and out of the box wouldn't change the volume
of the port, so it wouldn't change the sound but it fell on deaf ears.


N. Hanback

I guess it *would* change the effective volume of the inside of the
box, since ports are considered as solid objects when you calculate
interior box volume. The tech probably heard the difference from that
and assumed it was from "changing" the port length. Too funny.

Scott Gardner


On Mon, 24 May 2004 02:00:42 -0500, "ATS" wrote:

I was remined earlier today of an incident that happened to me years ago, I
was working as an installer at the time and a customer came in with a used
Pyle subwoofer and wanted an enclosure for it, so not having the specs
readliy available I called Pyle and spoke to a tech, after giving me his
guess at ported enclosure airspace, I said "uh... ok and what do you
recommend for the port length if I am using a 3" diameter port. He says
"Just cut about 12" of port then insert it into the port hole on the
enclosure, the slide it in and out of the box and see at which length it
sounds best. Then when you get to that spot cut the port." LMAO, I tried to
explain the moving the port in and out of the box wouldn't change the volume
of the port, so it wouldn't change the sound but it fell on deaf ears.


N. Hanback