Well , well, if it isn't Peter from Acoustic Reality.
The guy that made popular a series network configuration that I came up with years ago...
Long time, no hear from.
You know Peter, I have heard from several people that your amps and speakers were very good, but the problem was that you rubbed everyone the wrong way on a whole bunch of forums and made more enemies than friends.
I am sure many here can recall incidents from the past.
Here is the just of saying all that. You are welcome to post here all that you like, as long as you are civil.
So what happened to those US distributors you had? I have hardly heard a peep from you or about your products over here for a while.
As for your comments regarding lines sources, well, no, and kind of, and I'll take some of what you said a point at a time.
A true line source can include individual dynamic drivers.
See JBL papers written years ago or Jim Griffins latest "White" paper documentation.
A truly line source speaker can only radiate sound waves in the vertical direction (which is a huge advantage)
This depends on frequency and length of the array. Lower frequencies can and will radiate in all directions just like a point source. The wavelengths are simply longer than the array and are not cancelled by the other driver in the array.
An array or a speaker which contain point source units (equal to dynamic driver units), like for example a line array speaker, will NEVER act as a truly line source speaker. Such a speaker is too wide, the baffle is too big.
Point source drivers in an array will begin to behave as point source drivers when the frequency range being played is shorter than the distance between drivers, and to some effect the length of the array.
Baffle width or size has little to do with it even though reflected surfaces do effect the response.
The ONLY way to design a truly line source is with planar magnetic ribbons while using a very narrow (or no) baffle, period. The reason is that all the driver MUST radiate the sound waves in vertical direction, and only ELS, ribbons and planar magnetic transducers can do that (but ELS speakers are too wide).
Line source radiation patterns can be produced with any size drivers but the larger the drivers the less they will behave as a line source as frequency increases.
Drivers need not radiate only in a vertical direction. Quite the contrary. The more they radiate vertically the greater the interference pattern.
No speaker containing a point source driver (equal to dynamic driver units) will act as a truly line source.
Not so at all Peter.
In fact even a single driver line source like a long ribbon driver will still have some point source radiation patters as well.
Just take a 54" ribbon and block off 53" of it leaving the top of it only to play.
It will now play with a radiation pattern that exceeds vertically what it could not do before. That is because in no longer has the cancellation effect of the rest of the line.
Guess what. Even with you ear level 50" below it you can hear it plain as day.
You see, every inch of that continuos ribbon still radiates in all directions. It is the cancellation effect of it doing that, (comb filtering within the length of it) that causes it to have a limited vertical dispersion.
It is very difficult to find a truly line source soeaker, only a very few has been made. Soon we are introducing a truly line source, it is not an inexpensive speaker, two or three new patents are made too.
Hey Peter, you are more than welcome to share whatever info about your new stuff here all you like, so long as it is from an informative standpoint. When it becomes an advertisement is when it might get moved or deleted.
Putting a line of woofers next to the ribbon line seems to be the best (and, as far as I can tell, only) practical way to make a proper "line source" speaker.
John is correct.
If the dynamic drivers are playing within a frequency range (lower and longer wave lengths) then they all couple and play as one unit with no comb filtering effects.
If frequency ranges increase (higher frequencies) to wavelengths shorter than the line, then in those frequency ranges it will behave as multiple point sources as Peter suggest.