Sorry for the ignorance - new to the audio end of all this:

I just bought a pair of Studio Monitors (M-Audio BX5's) and set them up. They sound great, but I noticed that on one of the monitors, the inner ring of the circular HF Driver (tweeter) is crinkled, while on the other speaker it is perfectly smooth. Should I be concerned about this and return the monitors? I'm sure I didn't explain this clearly, so I provided a link to the manual - the diagram is on page 6

http://www.m-audio.com/images/en/manuals/BX5_Manual.pdf

Thanks in advance for your help.

It shouldn't be crinkled, and can potentially affect your high frequency performance.
Depending on how bad it is, this can be fixed using PostIT Notes (big kind) as an adhesive, but should only be attempted if you know exactly how to do this.
this sort of crinkling can happen in shipping, unpacking, or even when they went through QC, and sometimes it's really bad, others, it's a smal effort to pull/pop them back out.

Thanks Spot, I'm going back to Guitar Center to exchange them.
And thanks for all of your posts here. I've pretty much taken your recommendations for a budget set-up on just about every piece of equipment I've bought. Actually, as I total up my receipts, not sure if I should really be thanking you - man, this stuff adds up - :)

Seriously, thank you very much (and to all the others) for your feedback.