The Quadral Rubin III is a floorstanding loudspeaker released around the early 1990s, designed for high-fidelity audio reproduction. The speaker features a 4-way bass reflex design that includes dual rear bass reflex ports, providing enhanced low-frequency performance. Its construction consists of separate chambers for the bass driver and the bass-midrange driver, optimizing sound dispersion and clarity. The Rubin III has a robust build, measuring 900 mm in height, 220 mm in width, and 288 mm in depth, with a weight of approximately 15 kg. It came in a black and agate gray finish. The speaker's driver configuration includes a 170 mm bass driver, a 170 mm bass-midrange driver, a 110 mm midrange driver, and a 25 mm tweeter. With a nominal power handling of 120 watts and a peak power capacity of 200 watts, it has an efficiency rating of 89.5 dB/1W/1m. The frequency response ranges from 30 Hz to 22 kHz, making it suitable for a wide variety of music genres, particularly acoustic and classical music. The transitional frequencies are set at 150 Hz, 800 Hz, and 2,800 Hz, with a nominal impedance of 4 to 8 Ohms. Audiophiles praise the Rubin III for its natural and detailed sound reproduction, making it an excellent choice for discerning listeners.
