Square dance sound a is two 6.5 inch than a 12 inch which sound big

This is not necessarily, depending on the power as well as sensitivity, if the 6.5-inch power and sensitivity are higher than 12 inches, the sound of 6.5 inches must be greater than 12 inches, but the square dance used in the audio power and sensitivity are not very high, theoretically it should be 12 inches louder.