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In the Forum: Playback Listening
In the Thread: Remedies the Beauty
Post Subject: The Plain Truth, per PythagorasPosted by Paul S on: 10/28/2022
Thanks for the explication, Robin. This is exactly what I encounted when I messed with passive radiators, many years ago, and it is exactly why I abandoned them fairly quickly, after "making sure" I could not make problems "go away" by "adjusting Fs" by fiddling with dope and goop on the cones, etc., ad nauseum. And, as long as we're on the subject, there are similar/related issues with most/all "multi-driver" speakers. Basically, what "manufacturers" show in the way of RTA charts are "averaged"/"smoothed" results. Sure, we only care about what we hear; but, in the end, the sum-and-difference effects are just that, and the passive radiator has to get its energy from the active driver. In cases where the active driver is "challenged" to begin with, a passive radiator might make it "sound better", but its effects will not be simply additive, nor are they likely to be anything we could call linear, without calculus.
Paul S
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