Summary: Type: subwoofer; Size: 30 cm (12 in.); The number of bands: 1; Power: 170 W (nominal); Frequency range: 25 - 800 Hz; Built-in amplifier: yes; Crossover frequency: 40-250 Hz; Housing: yes; Enclosure type: vented; Features: high voltage input, phase adjustment; Number of speakers: 1; Dimensions: 300 mm; ...