The Grundig Box 306 M is a compact loudspeaker designed for high-quality sound reproduction. Manufactured in Germany during the early 1970s, specifically from 1973 to 1975, this model features a sleek design available in walnut and white finishes. It measures 340 x 510 x 90 mm (width x height x depth) and weighs 8.6 kg. This speaker operates as a 2-way closed system, incorporating dual woofers and a dome tweeter, delivering a power handling capacity of 25 watts nominal and 35 watts for music playback. The frequency response ranges from 45 Hz to 26,000 Hz, with a crossover frequency set at 4,000 Hz. It has an impedance of 4 Ohms and is equipped with a fixed connection cable featuring a plug that is 4 meters long. Users have reported a balanced sound profile, particularly favorable for classical music, along with impressive bass performance given its compact size. The heavy construction offers additional stability and sound quality enhancements.

The Grundig Box 306 M is a compact loudspeaker designed for high-quality sound reproduction. Manufactured in Germany during the early 1970s, specifically from 1973 to 1975, this model features a sleek design available in walnut and white finishes. It measures 340 x 510 x 90 mm (width x height x depth) and weighs 8.6 kg. This speaker operates as a 2-way closed system, incorporating dual woofers and a dome tweeter, delivering a power handling capacity of 25 watts nominal and 35 watts for music playback. The frequency response ranges from 45 Hz to 26,000 Hz, with a crossover frequency set at 4,000 Hz. It has an impedance of 4 Ohms and is equipped with a fixed connection cable featuring a plug that is 4 meters long. Users have reported a balanced sound profile, particularly favorable for classical music, along with impressive bass performance given its compact size. The heavy construction offers additional stability and sound quality enhancements.