Atlas Sound APT-34AT - Dual Directional Twin Horn Omni-Purpose Loudspeaker 30-W with Xfmr Includes 30 Watt High Efficiency Driver Omni-Purpose Mounting Bracket for Positioning Flexibility on Vertical or Horizontal Planes Twin Reflex Projectors Provide High Efficiency Bi-Directional Sound Dispersion Weather Resistant Construction for Indoor or Outdoor Installations