Quote:
Originally Posted by Lee123
...I have a 2011 135 convertible with a build date of 06/10. I bought it new and did not pay for a sound system upgrade and there is no upgrade on the window sticker. The head unit says "BMW Professional" and has only bass and treble controls, no 7-band equalizer...
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Your car is NOT a 2010, nor is it an early 2011 early build. Our 2010 (built 11/09) vert has the same head unit markings as yours, also has the little tweeter grilles in the door triangles, but no tweeters are visible behind them. Just darkness.
Its not a good enough radio for this car. The decision to provide it as standard was a serious, cheap omission, and very dissapointing, but they did the right thing by upgrading the "standard" syetem back to the prior (2009) included sound system for MY 2011.
The Harmon Kardon system was always an option in both our years. What was considered the "base", included system was cheapened below your level system in 2010. The white, silk screened markings on the head units are the same on all levels of system.