While I have not messed with the ALDA setting on my car, I have read many posts here about the subject. Some successful, some not so successful!
My recommendation would be to do a 'search' on the subject and get some feel of your own whether to adjust or not.
Just my .02...
__________________
Dale
1995 E320 Wagon 185K [SOLD]
1988 260e Sedan 165K
2007 F-150 XLT 188K [SOLD]
2003 Harley Davidson FLTRI Anniversary 26K
-----------------------------
2006 BMW 330Ci 110K - [SOLD]