The Jamo speakers suck.
I wound up buying a set because I was trying to minimize how my space my stuff was taking up and the Jamos are tiny. My current setup is an Onkyo 7 speaker system.
I swapped out the Jamos and the Onkyos to compare and the Onkyos were far and away better; way better mid range and fuller sound. The Jamos will sound tinny and shallow, especially during action sequences.