What is stopping the ultimate?

If you ask me, the recording quality. Some of my favorite CDs sound like crap unfortunately. My Mcintosh setup does the best job of all the ones I have tried to prevent a constant hiss from coming through but the recording still sucks. Perhaps when the cat fight of SACD and DVDA is over, we can settle on spending time and money on IMPROVING a common standard (as was mentioned) that should include recording company equipment quality as well.

As far as the steady current thread above between speaker and amp, it IS totally quantifiable and I have calculated it for my setup but let me tell you, it is supremely complicated and is dependant on all parts of the system. You change one piece and everything has to be done over again. Flux linkages from the cables, output circuits, and speaker coils are all intertwined and consequenly affect both voltage and current continously and are the main reason for differences in sound and fluctuations in output. Mcintosh realized this years ago and with the inductor-coupled output (autoformers) they use on solid state amps, they can reduce the effect by dominating it with a known variable - a fantastic concept. Electromagnetics are very complicated and so you might as well forget about calculating, since even that is an estimate at best, and just listen for yourself since the end result is what your ears like.

Re Bishop, Clueless, Greg, excellent points: Amp ESL speaker interaction is even more complex, as I painflully learnt through the years, because ESLs don't show a resistive load to the amp, have crazy impedance curves and since watt specs don't necesarily tell you the current capability of an amp, you can make costly mistakes, thinkling you've bought a powerhouse, which then conks out on you on really high notes. Hence also the fable, that ESLs have no real high end. You need current, lots of it and then a violin will have its overtones, a Steinway will sound like one also in the top octaves and a Coloratura in full steam will make your hair stand properly on end. Cheers,

Detlof - ESLs. You are so right, raise completely different needs in amps and wire too. The ESL acts more like a capacitor in the circuit, and with a transformer there too, raises all sorts of unique inductance/capacitance resonance issues. Special concerns about the inductance parameters of your wire as far as I understand -which isn't too far. Helps so much to understand what can be measured and what is understandable -but in the end the reference is one's ears. Detlof-have you ever heard differences in highs, some unwanted peaks, due to wire alone?

With regard to conventional speakers, I still want to play around with the idea of an amp that is variable impedence and designed specifically for one load/speaker, which is a point Tac brought up a few posts ago.

An audio system is really one circuit and it help to think of it that way instead of as discrete, separate, little enclosed boxes. We don't buy a car from five different vendors; body from one, frame from another, motor from third, all not knowing what the others design intentions are.

Back to topic on this thread we are so far from ultimate that it is depressing if you think about it. The amount and kinds of distortion just in speakers is crazy. Harmonic, intermodulation, crossmodulation, mechanical resonance.....the speaker is playing it's own tune really and it will be this way until the driver diaphram's density is equal to that of air and has absolutely uniform acceleration over the entire surface at all frequencies. Requires a speaker with trillions of microscopic transducers and nanotechnology or something- Lynn Olson has some interesting things to say about this stuff and most of my opinions just reflect a few folk like him.

Joke: what do you call the time between the point you step on the banana peel and when you fall on your arse?

- a bananosecond

Sincerely
I remain,

Clueless,

That joke has a peel.

I'm still brainstorming on a "full-range" plasma driver without the ozone problems or paying $2-$5 an hour to run pressurized gas tanks. If I could get one of those down to 100hz-step aside ribbons, electrostats, electrodynamics, and bending wave transducers. And spend all the loving time building the mother of all subwoofers to go with. Wouldn't have to worry about crossover points in the midband, time delay, phase problems, cabinet resonances, doppler distortion, puh.. gone. One beautiful pulsing point source. Who knows. I know they've been run down to 700hz :). Nelson Pass' "ion cloud" put him in the hospital, but it ran full-range I believe.