John E Janowitz
Second Unit
- Joined
- Oct 30, 2000
- Messages
- 445
stephanX,
At the tuning frequency the woofer will be nearly still. The PR's will be at their max excursion and doing nearly all of the work. The PR's have most of their output from the tuning point up to an octave above tuning. A vent in a vented enclosure would be the same.
At and above tuning the PR's and woofer are in phase with each other and their output adds. Below tuning they begin to get out of phase until the Fs of the PR itself. At that point there is a deep null because they are 180 degrees out of phase. This is referred to as the PR Notch or Null. In this case the PR Fs is around 5hz, so it does nothing to affect output of the system.
For more info on Pr's check here: http://www.stryke.com/prfaq.htm
John
At the tuning frequency the woofer will be nearly still. The PR's will be at their max excursion and doing nearly all of the work. The PR's have most of their output from the tuning point up to an octave above tuning. A vent in a vented enclosure would be the same.
At and above tuning the PR's and woofer are in phase with each other and their output adds. Below tuning they begin to get out of phase until the Fs of the PR itself. At that point there is a deep null because they are 180 degrees out of phase. This is referred to as the PR Notch or Null. In this case the PR Fs is around 5hz, so it does nothing to affect output of the system.
For more info on Pr's check here: http://www.stryke.com/prfaq.htm
John
