Overview
Ideal for professional recording and critical applications in broadcast, this versatile studio performer may be used with confidence in a wide variety of professional miking applications. Featuring direct-coupled balanced outputs for clean signals in high-output conditions, the microphone is totally free of the distortion associated with conventional transformer-coupled outputs. Its fast response to transients contributes to the open, transparent reproduction of even the most difficult-to-capture instruments. The microphone is fully RoHS-compliant – free from all substances specified in the EU directive on the reduction of hazardous substances (RoHS).
The AT4051b consists of two modular subassemblies: an AT4900b-48 body and an AT4051b-EL cardioid head capsule (both available separately). Additional interchangeable capsules are available in omnidirectional (AT4049b-EL) and hypercardioid (AT4053
Features
- Specially engineered to meet the most critical acoustic requirements of professional recording, broadcast and sound reinforcement
- High front-to-back rejection ratio—cardioid polar pattern improves isolation of desired sound source
- Direct-coupled, balanced output results in a clean signal even under high-output conditions
- Transformerless circuitry virtually eliminates low-frequency distortion and provides superior correlation of high-speed transients
- Switchable 80 Hz hi-pass filter and 10 dB pad
- Rugged turned-brass microphone housing for enduring dependability
- State-of-the-art design and manufacturing techniques ensure compliance with A-T’s stringent consistency and reliability standards
- RoHS-compliant – free from all substances specified in the EU directive on the reduction of hazardous substances (RoHS)
Specifications
ELEMENT | Externally polarized (DC bias) capacitor |
POLAR PATTERN | Cardioid |
FREQUENCY RESPONSE | 20-20,000 Hz |
LOW FREQUENCY ROLL-OFF | 80 Hz, 18 dB/octave |
OPEN CIRCUIT SENSITIVITY | -34 dB (19.9 mV) re 1V at 1 Pa |
IMPEDANCE | 50 ohms |
MAXIMUM INPUT SOUND LEVEL | 145 dB SPL, 1 kHz at 1% T.H.D.; 155 dB SPL, with 10 dB pad (nominal) |
NOISE | 16 dB SPL |
DYNAMIC RANGE (typical) | 129 dB, 1 kHz at Max SPL |
SIGNAL-TO-NOISE RATIO | 78 dB, 1 kHz at 1 Pa |
PHANTOM POWER REQUIREMENTS | 48V DC, 4.8 mA typical |
SWITCH | Flat, roll-off; 10 dB pad (nominal) |
WEIGHT | 126 g (4.4 oz) |
DIMENSIONS | 155.0 mm (6.10") long, 21.0 mm (0.83") maximum body diameter |
OUTPUT CONNECTOR | Integral 3-pin XLRM-type |
OPTIONAL INTERCHANGEABLE ELEMENTS | AT4049b-EL (omnidirectional); AT4053b-EL (hypercardioid) |
ACCESSORIES FURNISHED | AT8405a stand clamp for 5/8"-27 threaded stands; windscreen; protective carrying case |
AUDIO-TECHNICA CASE STYLE | S1 |