Sub-woofer satellite 3 piece systems are not a new concept, audiophiles and high performance audio enthusiasts have enjoyed them indoors for years. Leave it to Rockustics to adapt the technology to the outdoor listening environment. Drawing on our experience as the originator of the Simulated Stone Ultra Fidelity Outdoor Speaker, Rockustics has created systems to satisfy the need for Big Sound in a small package, without the hassle. Wire a left-right stereo speaker feed to 60 watts minimum) the subwoofer enclosure and the built in passive crossover directs all the low frequency information in the source material to the subwoofer and all the midrange and high frequency information to the satellite speakers. The result is high output high fidelity sound from a small yard friendly package.