Distance Between Loudspeaker and Reflex Vent

Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
Jump to Latest
W

whgeiger

Member
Joined 2004
No!

gassit said:
Hello,

Say a cabinet has four mid/bass driver units arranged in a vertical line and a bass reflex tube below them.

Is there an optimal distance between the bottom driver and the bass reflex tube mouth below it?

Thanks.
Click to expand...

When the vent is active, the drivers are barely moving. At the frequency where this occurs the ear has lost its capability to detect where the sound is coming from and wave length is a magnitude larger than cabinet dimensions.

WHG
 
R

Ronion

Member
Joined 2013
Judging by these measurements(audio blog: More on the B2031P and diffraction), ports on the front of the box are a bad idea. Head Unit mentioned sound waves blowing across the port and it looks like he is correct.
This guy's done several front ported speaker measurements that seem to get improved by blocking off the ports. audio blog: ADAM A3X Port Stuffing Ritual
audio blog: ADAM A5X

Maybe port placement is more critical for the midrange and treble than for the bass by the looks of things. Something to consider. Perhaps a 3-way would be okay in this respect. It doesn't seem like it becomes a problem until over 1,000Hz. Bigger waves may just skip right over it.
 
Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
Top Bottom