Driver: The Sunfire line of amps is voiced with a similar dip to what you tend to prefer.
Mint604: Your comments are not only ridiculous in they slam a whole genre of speakers by saying that they are not capable of producing at least reasonably listenable performance, but your facts and figures are just as whacked.
First of all, Villchur and Kloss came up with the Acoustic Suspension design in the 1950's, not Kloss and Allison in the 60's. On top of that, changing a speaker from an acoustic suspension design to ANY type of vented design will only produce 3 dB's of output difference over a relatively narrow range of frequencies. To say that there is a 10 dB difference demonstrates the lack of understanding behind your comments.
Other than that, i think that Driver hit a large portion of it with his response. Upper midrange and treble response non-linearities are the prime contributors of fatigue. This is why systems that tend to sound "warm" and / or "dark" are more listenable for a longer period of time. That is, the aforementioned frequency range that produces "grain" & "glare" are less pronounced.
As a side note, "cleaning up" the AC tends to limit the bandwidth of the AC signal. By limiting the bandwidth, you remove the upper harmonics or "spikes" that are generated in the AC process, not to mention all the other grunge that comes in on the line. Just as the "rolled off" response of the audio components reduces fatigue, "rolling off" the higher frequency grunge on the AC line can accomplish much the same task. Sean
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