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Aren't passive radiators out of phase?

Passive radiators seem like a great idea, but they must be out of phase with the driver. Yet, you see them on some pretty good speakers, such as the Sunfire subs. All I can think is they provide a spring-board, storing energy for the driver. Still, any sound produced by the PR is out of phase though. Any thoughts?
jhimnsue

Showing 3 responses by jhimnsue

jhimnsue OP
7 posts
 
Thanks to all for the enlightening info.
jhimnsue OP
7 posts
 
Thanks Bear. I think I'm beginning to get it. The PR is tuneable with the volume of the cabinet (due to the compressing nature of air) and the properties of the PR stucture. I wonder, have there been any speakers with pressurized cabinets or maybe gas filled? ........ How about liquid filled (he,he)?
jhimnsue OP
7 posts
 
Wow, this is cool. Thanks to you guys and your willingness to suffer us neophytes, I actually have some understanding of what's going on with PRs. Before this I just thought of PRs as doing the exact opposite of the driven speaker.......oh contrare moose-breath. Thanks!
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