Well he was the dad on Different Strokes. But even though it's been about 2 weeks since I last listened to this song, I'm assuming he's refering to a different Phil Drummond.
the speakers still bumpin
the beats still commin
compton's version of phil drummond
same dre, diff'rent strokes
same '64, different spokes
same chronic, just a different smoke
He is refering to the dad on Diff'rent Strokes look at the lyrics. Phil Drummond was a wealthy man just like Dre.