Does "Fast" = "Detailed"?

"doen't the treble contribute more to the perception of detail than that of any other region ?"

Not always. Until you experience a system with detailed, lifelike midrange and bass you might think so.

Puremusic, that is a nice explanation worth bookmarking. Thanks.

Gunbei, I believe your point has merit. Personally, I have never heard a rolled off system that seemed fast or detailed, though. To me, it's the attack of the notes that brings realism, and a perception of speed.

Here's another question. How much does a soundstage such as one that might be described as being holographic with clear placement of instruments rendered in a lifelike soundfield weigh on speed, or detail? Could this clear delineation of spacing and placement be construed as detail since it adds information to our perception of the experience?

Interesting, because what I've tried to describe is what many people might experience in a SET based system. A system most people wouldn't consider fast. And that's why, I think Puremusic's inclusion of "dynamics" has great relevance. Is detail then as Puremusic mentions limited to the frequency domain?

Tvad, I think one area I'm in the distinct minority here is that I consider a system that has good PRaT to be fast. And also that a system with good PRaT need not be highly detailed.

Oh yeah, I think it is very possible to have warm, fast and detailed. Snivesguy is on to the recipe, SET amp, especially one that delivers high current and relatively extended treble response, matched with efficient speakers with well damped bass, finally well thought out acoustic treatments. Lively, engaging, very articulate and detailed is the sound. The only lacking with this kind of system may be the macro dynamics, but much of fast is found in the micro dynamics, IMO.

Here's a good exapmle. I have a JOR. The Jadis stock tubes are KT90's. I decided to replace them with the Electro Harmonix KT88's. The 88's were like sludge, boomy, its was like the music was comming from the speaker like paste in a "tube". The 90's are detailed, sharp, vivid =fast. Anything that is not "fast' I refer to as grainy/smokey/hazy/dull. All 3 components can be subject to this "slow/dull" sound. The cdp, amp, speaker xover all 3 can be wired funky and thus the sound goes around in circles , too many circles, before it makes its exit to your ears. A good quick amp, vdp. xover will channel the music most intelligently/musically.
Now do you have the ears to tell the differences? Most folks make claims they do.

Paul