Audio Technica AT4073A Shotgun Microphone

Description

The AT4073a is intended for use in professional applications where remote power is available. It requires 11V to 52V DC phantom power, which may be provided by a mixer or console, or by a separate, in-line source such as the Audio-Technica AT8801 single-channel or CP8506 four-channel phantom power supplies.

Output from the microphone’s XLRM-type connector is low impedance (Lo-Z) balanced. The signal appears across Pins 2 and 3; Pin 1 is ground (shield). Output phase is “Pin 2 hot” – positive acoustic pressure produces positive voltage at Pin 2.
An integral 150 Hz high-pass filter provides easy switching from a flat frequency response to a low-end roll-off. The roll-off position reduces the pickup of low-frequency ambient noise (such as traffic, air-handling systems, etc.), room reverberation and mechanically coupled vibrations.

Avoid leaving the microphone in the open sun or in areas where temperatures exceed 110° F (43° C) for extended periods. Extremely high humidity should also be avoided.

• Designed for critical long-distance pickup in broadcasting, film/TV production, and theater sound reinforcement applications
• Direct-coupled, balanced output ensures a clean signal even in high-output conditions
• Exclusive acoustic design provides same directivity as mics up to 50% longer (U.S. Patent No. 4,789,044)
• Rugged housing made of lightweight structural-grade aluminum alloy
• Switchable low-frequency roll-off

Specifications

• Element: Externally polarized (DC bias) condenser
• Polar Pattern: Line + gradient
• Frequency Response: 30-20,000 Hz
• Low-Frequency Roll Off: 150 Hz, 12 dB/octave
• Open Circuit Sensitivity: –23 dB (70.8 mV) re 1V at 1 Pa*
• Impedance: 100 ohms
• Maximum Input Sound Level: 126 dB SPL, 1 kHz at 1% T.H.D.
• Noise: 14 dB SPL
• Dynamic Range (typical): 112 dB, 1 kHz at Max SPL
• Signal-To-Noise Ratio: 80 dB, 1 kHz at 1 Pa*
• Phantom Power Requirements: 11-52V DC, 3.2 mA typical
• Switch: Flat, roll-off
• Weight (less accessories): 4.0 oz (114 g)
• Dimensions: 9.13" (232.0 mm) long, 0.83" (21.0 mm) body diameter
• Accessories Furnished: AT8405a stand clamp for 5/8"-27 threaded stands; windscreen; protective carrying case