The AT4054 is a large-diaphragm, pressure-gradient capacitor microphone with a uniform cardioid polar pattern. The frequency response is smooth over an extended 60-20,000 Hz range. Based on the same advanced technology used in 40 Series studio micro- phones, the AT4054 is the result of a dedicated effort by Audio-Technica to bring studio-quality sound to the stage. It is designed for use in the most demanding sound reinforcement and recording applications.
The AT4054 is the culmination of extensive field evaluations in live-sound environments with resultant significant advances in microphone performance factors. It features very low self-noise, with a transformer-coupled output optimized for live-sound applications. The AT4054 features a tailored low-frequency response and slight enhancement of the vocal-range frequencies to bring vocals to the front in a live mix.
The AT4054 incorporates a specially-contoured large diaphragm that is aged through five different steps to assure the optimum characteristics achieved will remain constant over years of use. The 2-micron-thick, vapor-deposited gold diaphragm provides extremely smooth, warm and true-to-life reproduction of even the most subtle sonic nuances.
The off-axis response of the AT4054 is linear and uniform across the entire frequency range of the microphone. Any off-axis sounds (leakage) remain accurate and lifelike, resulting in a much more natural vocal/instrument mix.
For exceptional transient response and sound pressure level capability, the element back plate is precision-milled and aged to provide stable, optimum capacitance. The reductions in frequency response peaks and diaphragm distortion result in a microphone that delivers an articulate output even in very high sound pressure environments.
To further enhance the on-stage performance capability, Audio-Technica engineers have employed a carefully-designed shock- mount system to provide outstanding handling noise characteristics and mechanical shock resistance. In addition, the AT4054 element is protected by a hardened-steel windscreen. For even greater durabil- ity and protection, the element is housed in a second, internal windscreen, which also provides excellent resistance to popping.
The microphone element is enclosed in a rugged housing with baked-on, low-reflectance black finish. The included AT8406 tapered stand adapter permits mounting on any microphone stand with 5/8"-27 threads.
Specifications
- Element: Externally polarized (DC bias) capacitor
- Polar Pattern: Cardioid (Unidirectional)
- Frequency Response: 60-20,000 Hz
- Open Circuit Sensitivity (1 kHz): –46 dB (5.0 mV) ± 2 dB, re 1V at 1 Pa*1
- Impendance: 200 ohms
- Maximum Input Sound Level: 147 dB SPL, 1 kHz at 1% T.H.D.
- Noise, Typical (A-WEIGHTED): 18 dB SPL
- Dynamic Range, Typical: 129 dB, 1 kHz at Max SPL
- Signal-To-Noise Ratio, Typical: 76 dB, 1 kHz at 1 Pa*
- Power Requirements: 48V DC phantom (±4V)
- Current Consumption, Typical: 4.0 mA
- Weight (Less Cable And Clamp): 10.6 oz (300 grams)
- Dimensions: 6.97" (177.0 mm) long, 1.95" (49.5 mm) maximum head diameter
- Accessories Furnished: AT8406 tapered clamp for 5/8"-27 threaded stands; protective carrying case
