A professional double 15" speaker with BT receiver, MP3 player, powerful mid-low woofer and a high compression dynamic horn for excellent sound reproduction. Unlimited flexibility in placement due to the BT technology. The MP3 player plays audio files via USB stick or SD card. The slave output allows daisy chaining of additional speakers. The durable impact resistant moulded light weight enclosure is complemented with a tough metal grille that protects the woofers. This double active speaker can be used stand-alone and is ideal for use in bars, restaurants, small theatres and halls, fitness and conference rooms and on stages.