geoffkait Would you settle for whatever distortion you get in the concert hall during a live performance? Its nothing but air which is a linear transfer medium. If it did exactly the same thing in your home would you say "this is just like being there"? If not then some kind of distortion is happening at home and the alternative medium [electrical] transfer of sound waves does not match the purity of air. It is a simple concept. Make the electronics act like air. It requires that you match the velocity of air which is zero with no wind. The sound waves velocity riding on top of a zero velocity (air) results in a single un-modulated constant speed of Mach One (about 750 mph) When that happens you will not be able to tell them apart. If music is traveling toward you in the hall at 750 mph why would you not want it to hit you in your living room at 750 mph? That is your proof that it is live. If it deviates even a little (747 mph - 753 mph) it becomes a red flag to your brain and tells you it is not live. This is no longer a theory. Roger |
If you kill the phase errors you kill harmonic distortion.Hm. That's good work if you can get it. https://en.wikipedia.org/wiki/Phase_distortion In a nutshell though such is not the case, you have have harmonic distortion while at the same time having little or no phase distortion. They are not mutually exclusive. |
The difference is one is static phase error and one is dynamic phase error. I am referring to dynamic phase error caused by the amplifying process. If you have a dynamic speaker with tweeter, mid and bass drivers and they are time aligned (distance from you ear and delivering a coherent sound) and you add a shim under the back of the speaker stands so they are now tilted down slightly - you would still be able to hear the music but the coherency will be off by the same amount all the time. this is due to the physical maneuvering of the cabinets (mis-aligned). The tweeter is now somewhat closer to you and so the highs will now arrive too soon. This is an example of a static phase error. if you had someone take your speakers and rocked them back and forth while you were listening - that would be dynamic phase errors. It is a process of modulation not tilt. A tilted speaker still gives you a view of the soundstage (but from slightly different view) A modulated speaker cabinet will cause the sounstage to blurr like a shake table. Under those conditions it is difficult to nail down where everything is. Bottom line - even with perfect bolted down loudspeakers with good coherency they cannot project a stable image due to the dynamic modulation of the velocity fed to the speakers by an unstable amplifier. 90% of all system problems are from the electronic amplifiers. 10% is all the cables, power cords and magic pebbles. Phase modulation is gross amounts of distortion since your entire perception of a live soundstage depends on objects not shifting around during the playback process. (like someone shaking you speakers) It is literally the same thing as a photograph taken out of focus. Remove the shaky nature of the display and everything is stable and in focus. That can only happen inside the amplifier circuitry. Roger |
I've heard speakers that you can pick up and move around and all the while the soundstage is perfectly focused. Not all speakers do that but some do. The first time I head that Mike Maloney was moving his Tesla loudspeakers around while I was in the listening chair during a dealer demo. The soundstage was very focused on that speaker. Since a set of our early amps was playing at the time, must be that we got that focus thing several decades ago. Bottom line - even with perfect bolted down loudspeakers with good coherency they cannot project a stable image due to the dynamic modulation of the velocity fed to the speakers by an unstable amplifier.It must be that its all in the setup. I've yet to hear a functioning amplifier than can't project a stable image. |
