The Heco Professional 450 is a compact loudspeaker produced by Heco between 1978 and 1979, known for its solid construction and sound quality. It is manufactured in West Germany and features a three-way closed design. The speaker is equipped with a 200 mm woofer, a 38 mm midrange dome driver, and a 19 mm dome tweeter, making it capable of reproducing a wide frequency range from 35 Hz to 25,000 Hz. The system has a nominal power handling of 50 watts and can handle music power up to 80 watts, with an efficiency rating of 87 dB at 1 watt and 1 meter distance. The speaker has an impedance of 4 ohms. Dimensions are 400 mm in height, 250 mm in width, and 200 mm in depth, with a total weight of 8 kg. It is available in walnut and black finishes. The original price at launch was approximately 380 Deutsche Marks.
