These Cerwin Vega are high efficiancy, giving crisp high notes and full rich sound at low volume. Crank up the volume and you will hear why these same speakers have been used in dance clubs despite size. 40"hX17"wX17"d. They are designed for coner placement with a rear horn midrange that bounces the music off the walls to fill the room with sound. There is a front mid-range and tweeter. The kick ass 15" woofers faces the floor and does the work of any external sub woofer. The tweeter and 2- mid range speakers can be adjusted to your room acustics and listening tastes. Why am I selling these beauties. My wife wants to redecorate and likes those little Bose speakers she saw in the store. Happy wife happy life.