Quick AnswerOutdoor speakers made for permanent outdoor installation can stay outside year-round, but there isn’t one reliable lifespan for every system. Longevity depends on component construction, placement, drainage, exposure, installation quality, use, and care. The outdoor satellites, passive subwoofer, and direct-burial cable are designed for outdoor conditions, while the receiver-amplifier must stay dry and ventilated. A professional site plan helps reduce avoidable exposure without promising a fixed number of years.