Bose F1 Model 812 flex array loudspeaker 230V with Subwoofer powered 230V, UK (Active)Key Features; Powerful full range loudspeaker with 132 dB max SPL and low frequency performance down to 43 Hz ( 10 dB) Portable, standalone design with built in 1000 watt amplifier and nine transducers: eight high output drivers and a 12 inch high power woofer Lower crossover point than conventional loudspeakers for clear and natural vocals, even at high volumes Flexible Array technology: easily adjust coverage pattern Straight, C, J, or Reverse J to