How big are large cinemas front speakers?

[dazkyl]

Last week i saw hangover 3 at the largest cinema in Malta which seats over 700 people and is the only cinema in Malta to be equipped with full T.H.X approved sound.

I saw all the side and rear speakers , but for the fronts and sub, they must be behind the screen or something.

I was wondering , how big are the fronts for a cinema like this ? And what sub ?