-akhilesh

• Floyd's pape rsummarizing some of his work.

I have looked at just about every driver ot there and B&C is my choice. I am looking more seriuosly at Beyma, but BMS is not in the running.

Finally, of course, the crossovers and systems are tested at all polar angles (these results are shown on my web site). I have never seen a situation where the measurements and computer predictions were not the same, so this last step is a simple confirmation.

Please keep in mind that omni IS constant directivity. Its constant high directivity that is the key.

If you have not heard a good narrow constant directivity loudspeaker then do yourself a favor and hear them. You won't like anythiing else again.

I would suggest mine.

I did some more thinking on this, and i agree: i was confusing constant dir (CD) (varies with frequency) and high versus low directivity (h/LD) (varies with degree) , as you said in your post.

On re-reading Floyd's white paper, it seems he is saying one wants CD, but says nothing about LD versus HD. Clearly, HD (along with CD) will mean that the primary sound will dominate the musical energy, as opposed to first order and second order reflections. In other words the waterfall plot will slope much more with HD.

Do you have any studies at GEDLEE that have established, in double blind tests, that HD is preferable to LD, CD being held constant? Intuitively I agree with you: HD will make the room sound "deader" than LD.

Hope to see you in tulsa
-akhilesh
PS: Do you offer your speakers for sale or on a trial basis?

But here is the thing to consider with HD. With HD I can point the speakers such that the early reflections are minimizes and so that the first reflections come to the ear opposite the first arrival. This is very important since a first arrival and an early refelction at the same ear will cause coloration. This is point one.

Now also consider the energy time arrival of an HD versus a LD. The LD reflections arrive almsot instantaneously there is not gap between the first arrial and the early reflections. Not so the HD. There is a significant gap between the first arrival and the early reflections. I cannot overstate how important this later aspect is to imaging. Without a gap in the arrival times of the direct sound and the early reflectiosn the ear cannot resolve spatial location cues and the imaging will be poor.

The imaging on my speakers is as precise as headphones but without the "in the head" image problem. Pinpoint locailzation in a space beyond the actual location of the speakers. It really has to be heard to be believed.