DP 4 sound projector has an elegant appearance, easy to Install and suitable for commercial and industrial environments such as supermarkets, pools, warehouses, parking lots and anywhere high-clarity, high-efficient sound is required. DP4 has a sturdy plastic resin cylindrical body, while the clamp is in aluminum. The unit incorporates a double cone loudspeaker (externally protected by an aluminum grill) and a 100V constant voltage line transformer, with the possibility to preset the power during installation. Construction is IP 55 approved.