The Ruark RS1 Subwoofer second in the 100 Series to launch was born out of demand for a companion to the award-winning MR1 Bluetooth speakers. A 100W Class D amplifier offers a deep controlled bass that adds a tangible dimension to your listening experience. Enhancing the low-end sounds the subwoofer features a 170mm long-throw active driver 170mm passive radiator & an adjustable crossover of 50-180 Hz to deliver a natural extended bass that will elevate your favourite music. There is even a 180-degree phase switch so you can create a cohesive sound to match the performance of your speakers.