Much better. You're still overwhelming the user with information though.
I think you could accomplish everthing with one navigation layer that expands. So, you could have on either the top of the page or the left a "top-level" nav that consists of simply:
About Us | Products | Theory | Reviews | Purchase
When you click on "About Us" you get a company info splash page w/ a secondary nav layer (either under the top nav or indented and under the About Us if left-nav) that has:
Philosophy | Our Mission | Contact Info | Dealers |
etc.
You're definately on the right track though. Looks a lot better.
FWIW, I also get the weird orange text when my cursor is hovering over the page. I think you've got a rouge tag somewhere. I only looked for a second, but on this page
http://www.4sptech.com/new/waveguides.phpyou have this:
<h2><a name=#without>THE PROBLEM(S) WITHOUT HORNS<BR> </h2>
w/ no
</a>
tag. Might be causing the orange text hover.