Omnidirectional speakers. The future?


I have been interested in hi-fi for about 25 years. I usually get the hankering to buy something if it knocks my socks off. Like most I started with a pair of box speakers. Then I heard a pair of Magnepans and was instantly hooked on planars. The next sock knocker was a pair of Soundlabs. I saved until I could afford a pair of Millenium 2's. Sock knocker number 3 was a pair of Shahinian Diapasons (Omnidirectional radiators utilizing multiple conventional drivers pointed in four directions). These sounded as much like real music as anything I had ever heard.
Duke from Audiokinesis seems to be onto the importance of loudspeaker radiation patterns. I don't see alot of other posts about the subject.
Sock knocker number four was a pair of Quad 988's. But wait, I'm back to planars. Or am I? It seems the Quads emmulate a point source by utilizing time delay in concentric rings in the diaphragms. At low volumes, the Quads might be better than my Shahinians. Unfortunately they lack deep bass and extreme dynamics so the Shahinians are still my # 1 choice. And what about the highly acclaimed (and rightly so) Soundlabs. These planars are actually constructed on a radius.
I agree with Richard Shahinian. Sound waves in nature propagate in a polyradial trajectory from their point of source. So then doesn't it seem logical that a loudspeaker should try to emmulate nature?

holzhauer
Summitav wrote: "Those who state that live recordings will not sound 'real' in an anechoic environment have not listened (properly) in that environment."

You are quite correct that I haven't had the opportunity to listen to anything, much less a good stereo, inside of an anechoic chamber. That's a chance that's tough to come by for most of us. I have no doubt that the experience would be revelatory in many ways. (I have listened, and worked, in studio control rooms where recording, mixing and mastering are done, know that these are not anechoic environments but rather controlled environments, and have prefered using ones - and gotten better results - where the monitoring options are not limited to just the nearfield.)

But I'll still stick by my contentions A) that a stereo system would sound best in an anechoic chamber if the speakers (and the recordings played through them) were designed with that as their intended environment, and B) that a well-implemented multi-channel scheme would sound more naturally convincing in that environment than would stereo (there's nothing sacrosanct in theory about limiting ourselves to 2 channels as some sort of ideal paradigm for sound reproduction, it's just much simpler to do well than a higher number of channels).

Those statements imply some corollaries:

>That speakers intended for home use will sound better if they are not designed solely on the basis of anechoic measurements, but take into account more typical listening room acoustics.

>That a well-implemented multi-channel scheme could also sound better than stereo in the home, but also that this would not only be highly dependent on the efficacy of the recording process used, but on closely controlling things like dispersion and room acoustics as well. Or in other words, the room properties, or distortions, that can actually make 1- or 2-channel reproduction go down more easily as a subjective matter, will become more problematic as we continue to add channels and speakers. The more we do to try and supply some semblence of the 'real' recorded performance space acoustic, the less we will be able to tolerate overlaying the arbitrary and unrelated listening room acoustic as a kind of a ameliorative substitute.
A little off topic, but on theme, is the build, and sonic differences between The bipole Apogee Scintilla, and other dipole Apogees. In Apogee circles, it is a recognized fact the Scintilla's performance is touched with magic. I attribute the difference to the wrap over tweeter ribbons of the Scintilla. This creates two fan shaped radiation wave patterns front and rear, out of phase with each other.
Never done any serious outdoor listening, but I have heard speakers (Maggies) syspended from the ceiling near the center of a barn that was so big that I'm sure there were no reflections to speak of. The best IMHO. But not everyone has a barn.
Muralman1: The radiation pattern and phase relationship you describe is dipole, not bipole.
This would be a good thread for Roy Johnson to chime in on. Roy, you out there? It sounds like Opalchip is of the phase coherent and time alignment (1st order XO) camp.

Opalchip, have you heard Green Mountain Audio speakers? It sounds like they'd be right up your alley. Besides the Sequerra's what other speakers currently on the market do like?