Product Description
The Shure 550L is an omnidirectional dynamic base station microphone with a frequency response specially tailored for voice intelligibility. It is equally useful for radio communications, paging and dispatching systems, and its low-impedance connection makes it adaptable to most PA amplifiers. The low-impedance design also makes it useful for long runs of cable, or under severe hum disturbance conditions.The microphone is not affected by heat or humidity. Its exclusive ARMO-DUR® case is immune to oil, grease, fumes, salt spray, sun, rust, and corrosion -- and is outstanding in its ability to resist mechanical shocks and vibration. The "Million-Cycle" leaf-type switch is designed to withstand rigorous operating conditions and constant use. Specifications: Type: Dynamic. Frequency Response: 150 to 6,000 Hz. Polar Pattern: Omnidirectional. Impedance (at 1,000 Hz): Microphone rating impedance is 150 ohms (220 ohms actual) for connection to microphone inputs rated at 75 to 300 ohms. Output Level (at 1,000 Hz), Open Circuit Voltage: -54.0 dB/Pa (2.0mV). Switch: Press-to-Talk Switch actuates microphone circuit and external relay or control circuit. Microphone circuit normally open.. Cable: 2.1m (7 ft) four-conductor, two-conductor shielded, non-detachable. Case: Brown ARMO-DUR® with dull chrome-plated steel screen. Dimensions: Height: 10.375", Base Length: 5.875", Base Width: 2.25". Net Weight: 1.84 lbs. Shipping Weight: 2.47 lbs.
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