WATT PUPPY 3/2 WHAT AMPLIFIER?TWEETER

I JUST CAN'T SEEM TO TIGHTEN THE BASS ON THE 2'S. CAN SOMEONE SUGGEST AN AMPLIFIER TO MAKE THOSE DRIVERS MOVE? ALSO, I LOVE THE 3 OLD FOCAL TWEETER - MANY PEOPLE UPGRADED TO THE 5'S TITANIUM TWEETER - IS IT A MORE MUSICAL UPGRADE IF I GO FOR THE 5 MID AND TWEETER CONVERSION?