E85 2003 speaker upgrade help

Bavsound.com sells speakers engineered to plug and play in BMW vehicles. They're out of California but have dealers Worldwide.
 
Which speakers did you go for in the end?

True 'White noise' is most likely originate from the source / amplification. Higher sensitivity speakers will naturally amplify any existing level of background noise along with the music.

Also, check if it makes a difference between having the car on or off. It is possible to introduce an alternator driven whine into the speakers if cross-overs are in certain locations - i.e. near the main loom.

ETA - Ignore - didn't see the other responses. Yes, unsurprising to get white noise when adding a full range with tweeter down there! Good luck with your next attempt!
 
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