Genelec 4020C Black Wired 60 W4020C Installation Speaker. 100 dB, 56 Hz 25 kHz, 3. 1 kg , 50 W, H 226 x W 151 x D 142 When space is at a premium, the 4020C is your compact, faithful friend. Designed for challenging commercial installations, the 4020C squeezes huge performance into a small package. Loudspeakers Tweeter diameter 1. 9 cm Tweeter Yes Speaker enclosure Reflex Speaker placement Floor, Tabletop bookshelf Audio Sound pressure level (max) 100 dB Frequency range 56 25000 Hz