The PMP35R megaphone with built-in siren has an 800 yard range! Used by U.S. Army, Navy, Air Force, Marines, and Coast Guard. Uses 4 D batteries, not included. What makes this megaphone so unique is the built in voice recorder that allows you to repeat recorded audio with ease. Features 10 second integrated audio memory.
Specifications: • Power: 30 watts • Dimensions: 6.25" H x 6.25" W x 10" L • Weight: 1.15 lbs.
Constant Voltage (70-Volt) Audio Systems
Audio distribution systems, especially those commonly used in department stores, warehouses, restaurants, etc., require that many loudspeakers be driven from a single audio amplifier over long runs of speaker wire. Â The "constant voltage" or "high impedance distribution" audio systems can be complex to understand at first, however, provides many advantages. Learn how to design your own 70-volt or 25-volt loudspeaker system.Â
