I have put up three videos that I made a while ago on the tweeter groupbuy page.  They describe crossover effects, dome directivity versus frequency.  And the effects of a shallow mount on the tweeters dispersion pattern.

Take a look at this site, and run the test.

You might be rather surprised as to the state of your hearing.

This link takes you to a website that allows a degree of hearing testing that is quite rare.  What you can perceive from this test is what your hearing is like over a very broad range.  Much greater than that given in standard audiology testing.

http://newt.phys.unsw.edu.au/jw/hearing.html

Yes, it's the simple things i life that really matter.  Heat, being one that really helps in working on things in comport.

A friend of mine donated a beautiful furnace to me today.  It's almost new.  So I'm setting it up net week, and I can finally work at will on almost a months worth of prototypes and custom builds.

At long last!