The Dual CL 151 is a 2-way closed loudspeaker produced between 1974 and 1976 in Germany. It features a stylish walnut finish with a textile grille covering and measures 590 mm in height, 330 mm in width, and 105 mm in depth. Weighing 8.8 kg, this model was originally priced at approximately 360 DM. The loudspeaker is designed with a dual woofer configuration, having two 130 mm woofers and a single 25 mm dome tweeter. It has a power handling specification of 30 watts nominal and 40 watts music power, with an efficiency rating that allows for a frequency response ranging from 40 Hz to 25,000 Hz (DIN). The crossover frequency is set at 1,500 Hz with a slope of 12 dB/octave, and it operates with an impedance of 4-8 Ohms. The CL 151 is recommended for room sizes up to 35 m², making it suitable for medium-sized listening environments.