The 26 x 19 x 14 cm (10.2 x 7.5 x 5.5 in), 5 kg (11 lb) PACO concrete speaker features two 6 W amps, a front-firing 3.5-inch low/mid range speaker, and a 2-inch surface transducer mounted underneath the fir top that’s said to add warmth to the highs, while the concrete housing enhances bass performance.