shrink wrap film residue- how to remove

For paint finish, the best polish to remove marring and is Menzerna polish. Expensive but way better than Meguires.

You want both Super Intensive and follow by Final polish, both by Menzerna.

Polish by hand.
I used it on my Wilsons W/P 7s before, as well as my cars.

Thanks lprules1962. Its 2500 grit. Very fine stuff here. The company also suggested to use 3M Finesse on the speakers. To me that means I would need to use an electric hand buffer to apply it to the speaker and I'm not too confident of my abilities to do a good job that way. 
I do agree it probably was a moisture issue but had no idea stretch wrap would react that way. I had the stuff on 2 other subs that were high gloss and didnt notice anything when I looked at them as well. Maybe they use a different type of paint and gloss on their subs. Thanks for your suggestion. 

2007audioman

The clay bar is a great idea, although very intimidating to those unfamiliar with auto detailing.  Without assuming any responsibility, you might try some alcohol.  I just used everclear to remove the sticky residue from a very old plastic piece and I was amazed.  I was absolutely sure the plastic had degenerated and oozed a sticky substance, but it was only a surface coating removed by alcohol.  

Thanks chayro..you know now that you mentioned it, the support tech did mention to use isopropyl alcohol to remove the marks as well. I guess its not abrasive I suppose is why he suggested it. So your experience, what do you mean it was "only a surface coating" removed by the alcohol? Was it still shiny and had a smooth feel to it after you cleaned it with the alcohol? Reason I ask is cause I have to do the whole speaker(s) with the alcohol if it works and dont want to damage the coating or leave a dull look or scratches as well when finished.  Such a delicate thing these high gloss speakers.Did you dilute the alcohol or did you use it full strength? Thanks chayro.

2007audioman

Alcohol is routinely used by auto detailers to remove waxy residues.  As far as my experience with the plastic part, it was left smooth and shiny, like new.  The thing is - whenever you polish or even clean the finish, it is very important to use the proper tools and technique.  I recommend microfiber towels only and work in straight lines - gently.  
I used the Everclear, which is 190 proof grain alcohol, full strength.