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In the Forum: Playback Listening
In the Thread: Remedies the Beauty
Post Subject: Passive Radiator Part2Posted by rowuk on: 10/29/2022
The Fs resonance does have its width BUT that means that the 30 Hz PR resonance out of my example is excited when the driver is not exactly at 30 Hz (not that a 30Hz PR can resonate at 32 0r 28Hz!). By definition a Helmholtz Resonator has one frequency based on mass and the air spring. If we want multiple frequencies, we need multiple PRs that each have their own frequencies (and due to "Q" their own trash when other frequencies are needed). In addition, the PR needs several cycles to "get up to speed". It is ALWAYS way behind the active driver.
The problem here is the single PR RESONANT FREQUENCY that will modulate everything else.
All of this technical stuff does not necessarily correlate to good or bad sound. Plenty of audiophiles are very tolerant of things that their friends have not yet criticized...Rerurn to Romy the Cat's Site