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In Reply to: RE: best recording to show off Maggie lightning fast bass ? posted by trioderob on November 10, 2021 at 21:15:38
Dipole speakers - planar or cone array - have a different bass interaction with the room as compared to boxes. And, to get the most out of a dipole bass system you need DSP.Linkwitz states that, "the observed audible difference between monopole and dipole for bass below the room's Schroeder frequency is:
Less boom and droning of specific notes with a dipole,
A higher degree of articulation and resolution of complex musical bass lines,
A sense of air, spaciousness, and very natural reproduction of acoustic bass..." (from https://www.linkwitzlab.com/frontiers.htm )Folks are used to box speakers so to them, that's how bass is supposed to sound. They can't help it.
"Fast bass" is a misnomer, an audio descriptive term whose literal meaning makes no actual sense. Different listeners connect the term with different sonic qualities, so in essence the term is meaningless. In general, though, I think most people are describing a playback system that has less low frequency group delay and to some degree quicker decay on bass transients, when they talk about "fast bass." Dipole and open-baffle bass systems can be optimized to provide both in ways that sealed, ported and horn-loaded systems really can't. An exception is well-designed transmission line loading, which can have very low bass frequency group delay although they do not offer the room interaction benefits that can be gotten from a properly set up dipole system.
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Science doesn't care what you believe.
Edits: 11/13/21 11/13/21 11/13/21Follow Ups:
> "Fast bass" is a misnomer, an audio descriptive term whose literal meaning makes no actual sense. Different listeners connect the term with different sonic qualities, so in essence the term is meaningless. In general, though, I think most people are describing a playback system that has less low frequency group delay and to some degree quicker decay on bass transients, when they talk about "fast bass."
Less low frequency group delay means that the bass arrives on time with the higher frequencies, instead of being late. Sounds like the opposite of slow bass to me.
And quicker decay on transients means it goes away faster instead of hanging around too long, i.e. slow.
So fast is a good enough metaphorical description as it's meant in opposition to "slow", and slow means showing up late and leaving late.
I agree 100% with the late Mr Linkwitz about the phenomenon but I now thing there's a good enough definition of "fast bass".
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