Monacor AR-30 Exciter Speaker. Features: Weatherproof, robust exciters/resonators for music and speech reproduction over vibrating surfaces. These resonators can be easily mounted on doors, cabinet doors, shelves, tabletops, lightweight walls, ceiling panels, or a variety of other surfaces that can be set into vibration. They create an impressive sound throughout the environment. These resonators are not suitable for use on glass surfaces. Weatherproof audio exciter/resonator, 8 Ohm. Depending on the mounting surface, they provide a very wide frequency response with astonishing volume. High power handling of 30 W MAX (AR-30) or 50 W MAX (AR-50). Very robust, weatherproof design, making them suitable for outdoor use and under challenging dirty conditions. Ideal for home and outdoor sound reinforcement, for example, on doors, cabinets, shelves, and boats. Waterproof (IP68). Supplied with a screwable mounting plate. Technical specifications: Maximum power handling: 30 W. Product type: Exciter speaker. Additional technical data: Power handling: 30 W MAX. Impedance: 8 Ohm. Frequency range: dependent on installation. Resonance frequency: 600 Hz. Minimum mounting surface: Diameter 80 mm. Dimensions: Diameter 80 mm x 40 mm. Weight: 0.65 kg.