Maybe my math is skewed...

but I have the upgraded factory hi-fi that claims 10 speakers. yet Ive only been able to account for 8:

2 - A-pillar covers (1 ea)
4 - Front doors (2 ea)
2 - back seat panels

total of 8. Where are the other two, hidden, like two subs? Or am I blind??

 

The back speakers are 2-way, so those count as two each. With the right light, you can see through the grill and see a tweeter in the middle.

 

This is true....I also found them with a light.

 

wow what stealthy technology will BMW lay on us next?

 

I had done the same thing, counted 8 and figured the rears were tweets and mids.

 

What did you upgrade to? How do they sounds with the factory amp?