The Yamaha NS-G30 MkIII is a compact, passive 2-way bookshelf or monitor speaker from the 90s. The model is known as a solid hi-fi speaker that delivers clear sound for an entry-level price. Key specifications System: 2-way bass reflex (with the port on the back) Power: 60 watts nominal (up to 100 to 120 watts maximum) Impedance: 4 Ohm Frequency range: 50 Hz to 20,000 Hz Sensitivity: 88 dB Crossover frequency: 3000 Hz Drivers: 170 mm woofer and a 19 mm dome tweeter Dimensions: 22.5 x 34 x 24 cm (Width x Height x Depth) Pictures are original and part of description! Parcel will be well packed and shipped insured !