In Reply to: I don't get it. posted by Rick W on March 12, 2017 at 17:24:55:
John is correct, a loudspeaker, sealed box or vented is a resonant system which can be driven internally (as per normal) or externally. In the latter case, just as a diaphragm wall or floor mode does, driving that resonance takes away energy from the room sound pressure .
For a loudspeaker in a room, at bass frequencies, it is measurable but usually small and like he said terminating the speaker (as it is when connected to an amplifier), kills the Q of the resonant absorber.
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Follow Ups
- RE: I don't get it. - tomservo 08:31:02 03/13/17 (2)
- "....measurable but usually small...." Yeah, as I said, I'd bet its insignificant. - Rick W 10:30:59 03/13/17 (1)
- RE: "....measurable but usually small...." Yeah, as I said, I'd bet its insignificant. - tomservo 05:21:42 03/17/17 (0)