The Heco Interior 120 is a compact 2-way closed speaker model introduced in 1989, manufactured in Germany. It features a sleek design available in various colors, including black, white, walnut decor, ocean blue, and Ferrari red, allowing it to fit aesthetically into different environments. The dimensions of the speaker are 230 mm in width, 320 mm in height, and 230 mm in depth, with a total weight that reflects its robust construction. It was originally sold at a price point of approximately 680 DM for a pair. The speaker is equipped with a 175 mm woofer and a 19 mm aluminum manganese dome tweeter, designed to provide a balanced audio output. It has a nominal power handling capability of 70 watts and can handle up to 100 watts for music playback. With an efficiency rating of 87 dB at 1W/1m, it covers a frequency response range from 42 Hz to 30,000 Hz, supported by a crossover frequency of 1,800 Hz. The nominal impedance is set at 4 Ohm, making it compatible with a variety of audio systems.