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MICROPHONE - SHOTGUN DYNAMIC DUAL IMPEDENCE - SOUND SPOT - CARDILINE - WIRED HI-Z 11-644-7997 PART NO. 535436 WITH E-V ACCOUSTALLOY DIAPHRAGM APRIL 1978 - NEW OLD STOCK - The Electro-Voice (EV) 644 Sound Spot is a vintage directional dynamic microphone from the 1960s, known for its unique "shotgun" design that allows for sound capture from a distance. It was specifically engineered for "tough" sound environments like theaters, auditoriums, and churches where microphones cannot be placed near the source - Directional Design: It uses a "Cardiline" design—a combination of cardioid and distributed front openings—to achieve highly directional pickup.
Working Distance: It extends the effective working distance by more than 2.5 times compared to standard omnidirectional microphones.
Sound Rejection: Above 700 Hz, it provides over 20 dB of sound rejection from the sides and rear, helping to eliminate feedback and background noise.
Acoustalloy® Diaphragm: Features EV’s proprietary non-metallic diaphragm, which is highly resistant to humidity and temperature changes.
Dual Impedance: It can be switched between 150 ohms (Lo-Z) and High Impedance (Hi-Z) by changing the wiring at the connector.
Build: Constructed with a pressure-cast zinc and brass case, typically finished in satin chrome or non-reflective grey - Live Events: Ideal for stages and churches to capture speakers or performers from afar.
Field Reporting: Historically used for radio field reporting and news conferences to pick up questions from a distance.
Recording: Modern users often use it as a "colored" room microphone to add vintage character to recordings - APRIL 1978 - NEW OLD STOCK