Posted by Wayne Parham on April 23, 2003 at 18:33:24

In Reply to: Dual Ducts for PiAligned 12TRXB Enclosures -- update... posted by Tinnitus on April 23, 2003 at 13:24:56:

There are indeed a few things to consider here - One is the Helmholtz frequency and another is the Q of the resonator, which is determined by its ratio of reactance to resistance. There is also the issue of port airspeed, which matters if turbulance causes audible artifacts. So vent area is indeed one of the important factors to consider.