NCAC 2013 Annual MeetingLogo Design Contest

I replaced the sun rays with sound waves.
Please let me know if you would like to see any changes.
Thank you.

with the circle emblem there is low readability of the National Council of Acoustical Consultants which is an issue for us. we prefer the solid mountain color over the gradient. is this the actual denver skyline that you are using in the design?

thank you!

Here are the revised versions.
In entry #68, the skyline is a little bit abstract but in entry #69 I used the real Denver skyline.
Thank you.