Active sub-bass with 2×12 “woofer. Its Woofers are mounted in a 6th order bandpass cab, which results in 15db more output at the front of the speaker. Class D 1000W RMS amplifier (2x500W). Birch cab finished with black color with 2 attachment points M20 for mounting rod for satellites (35 mm in diameter) Dimensions (HxWxD) 665 x 381 x 714 mm – 41 kg.