The six speaker is one in each door and 2 tweeters, probably one in each door. The 10 speaker would probably have 4 tweeters, 1 in each door, 4 door full range speakers, a center speaker, and a sub in back. This is my speculation since this is all I could find on it.
10 speakers (including center speaker, subwoofer and external amplifier) 6 speakers (including 2 tweeters)