Posted by Adrian Mack on September 13, 2003 at 18:20:14

Hi Wayne,

I realize that port size doesn't change the response curve if the tuning is the same, but will a port by PiAlign be better than a different sized port of the same tuning? (has this damping got anything to do with transient response or overring).

In PiAlign.doc, the formulas for the port set Lc, Fre, and Qe. Does Lc correct for when the port is flanged on one end? It seems that the formulas want you to guess a port diameter/length and plug them into the formulas until we get the port Fre to match what cabinet Fre should be. Are we meant to juggle these numbers until the ports Qe is the same as the cabinets Qe. If these Qe are very different for the same tuning, what will happen?

BTW: Are port resonances associated with standing waves, or waveguide behaviour? Have you got any links on this topic?

Thanks!
Adrian

• Re: PiAlign port - Wayne Parham 18:30:43 09/13/03 (7)
  • Re: PiAlign port - Adrian Mack 02:44:51 09/14/03 (6)
    • Re: PiAlign port - Wayne Parham 03:24:43 09/14/03 (5)
      • Re: PiAlign port - Adrian Mack 05:33:25 09/14/03 (2)
        • Re: PiAlign port - Wayne Parham 06:10:09 09/14/03 (1)
          • Re: PiAlign port - Adrian Mack 06:50:25 09/14/03 (0)
      • what about this duct_NO ONE has facts! - toxicport.e 04:21:03 09/14/03 (1)
        • Band-pass - Wayne Parham 04:42:04 09/14/03 (0)