Loudspeaker dispersion-

Johnnyb53, I've read elsewhere the same comment about the relationship between the diameter of a driver's diaphram and the wavelength at which the driver will start to beam.

Just thinking out loud here .... Most tweeters have 1 inch domes or diaphram. At what frequency would that type of tweeter start to beam?

Just thinking out loud here .... Most tweeters have 1 inch domes or diaphram. At what frequency would that type of tweeter start to beam?

As the frequency approaches the diaphram diameter, the dispersion narrows. In the case of the 1" tweeter--barring some kind of waveguide--it's in full beam mode at about 13,500 Hz. See the wavelength caluculator to find the wavelength of any frequency.

Johnnyb53...thanks for that link -- most instructive website!

In most cases, speakers use drivers lined up vertically, the dispersion of the individual drivers doesn't vary, but the summed output will vary because the drivers are not concentric but positioned in a line and putting out different frequencies.

I appreciate the summed output comments. However a 90/10 ratio is extreme. I hope some designer might "chime" in about this. (Are chimes directional?)