The Roku Streambar Pro 9101X used four full-range speakers. The speakers have a voice coil with a diameter of 20.45 mm and a height of 6.7 mm. Each speaker contains two magnets: the main magnet has a diameter of 50 mm and a height of 10.3 mm, but the bottom has a diameter of 34.76 mm and a height of 5.08 mm.