Audio Technica At4047Mp Users Manual
at4047mp e904bd56-8473-4b67-979e-71dafda75cad Audio-Technica Microphone AT4047MP User Guide |
2015-02-06
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AT4047MP Multi-Pattern Condenser Side-Address Microphone 40 series microphones that permits choice of flat response or low-frequency roll-off (via integral 80 Hz high-pass filter). The microphone is enclosed in a rugged housing. The included AT8449/SV shock mount provides superior isolation and permits mounting on any microphone stand with 5/8"-27 threads. A dust cover and a protective carrying case are also included. Operation & Maintenance The AT4047MP requires 48V phantom power for operation. Output 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. To avoid phase cancellation and poor sound, all mic cables must be wired consistently: Pin 1-to-Pin 1, etc. Features • Specially engineered to meet the most critical acoustic requirements of professional recording, broadcast and sound reinforcement • Three switchable polar patterns: omnidirectional, cardioid, figure-of-eight • Transformer-coupled output and specially tuned element provide sonic characteristics reminiscent of early F.E.T. studio microphone designs • Exceptionally low self-noise, wide dynamic range and high SPL capability • Dual-diaphragm capsule design maintains precise polar pattern definition across the full frequency range of the microphone • Precision-machined, nickel-plated brass, acoustic element baffle provides enhanced element stability and optimal sensitivity • Vintage silver-matte finish on microphone and shock mount • Open acoustical environment of the symmetrical housing assembly minimizes unwanted internal reflections • Custom shock mount provides superior isolation • Integral 80 Hz high-pass filter switch and 10 dB pad switch • State-of-the-art design and manufacturing techniques ensure compliance with A-T’s stringent consistency and reliability standards Description The AT4047MP is a large-diaphragm side-address externally polarized (DC bias) condenser microphone with three switchable polar patterns: omnidirectional, cardioid, and figure-of-eight. It is designed to meet the most critical acoustic requirements of professional recording, broadcast and sound reinforcement. The microphone requires 48V phantom power for operation. The omnidirectional polar pattern is sensitive to sound coming from all directions. Select the omni pattern to pick up several voices or instruments on the same microphone, to diminish proximity effect, and to preserve the location’s ambient sound. The cardioid polar pattern is more sensitive to sound originating directly in front of the element, making it useful in controlling feedback, reducing pickup of unwanted sounds and providing isolation between performers. The figure-of-eight polar pattern is more sensitive to sound originating in the front and back of the microphone, rejecting sounds from the sides. It is often used in conjunction with advanced stereo miking techniques. The output of the microphone is a 3-pin XLRM-type connector. The microphone is equipped with a switchable 10 dB pad and a switch A raised Audio-Technica emblem and the pattern-selection switch are on the front of the microphone. Position this side of the microphone toward the sound source. The pattern-selection switch provides user-selection of omnidirectional, cardioid, and figure-of-eight polar patterns. To select the omnidirectional polar pattern, slide the switch to the circular polar pattern image. To select the cardioid polar pattern, slide the switch to the heart-shaped polar pattern image. To select the figure-of-eight pattern, slide the switch to the figureeight shaped polar pattern image. An integral 80 Hz high-pass filter provides easy switching from a flat frequency response to a low-end roll-off. The roll-off position reduces the microphone’s sensitivity to popping in close vocal use. It also reduces the pickup of low-frequency ambient noise (such as traffic, air-handling systems, etc.), room reverberation and mechanically coupled vibrations. To engage the high-pass filter, slide the switch toward the “bent” line. The microphone is also equipped with a switchable 10 dB pad that lowers the microphone’s sensitivity, thus providing higher SPL capability for flexible use with a wide range of users and system configurations. To engage the 10 dB pad, slide the switch toward the -10 position. In use, secure the cable to the mic stand or boom, leaving a slack loop at the mic. This will ensure the most effective shock isolation and reduce the possibility of accidentally pulling the microphone out of its mount. 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. Architect’s and Engineer’s Specifications The microphone shall be a large-diaphragm side-address externally polarized (DC bias) condenser with user-switchable omnidirectional, cardioid, and figure-of-eight polar patterns and a frequency response of 20 Hz to 18,000 Hz. The microphone shall operate from an external 48V DC phantom power source. It shall be capable of handling sound input levels up to 155 dB (165 dB with 10 dB pad) with a dynamic range of 141 dB. Nominal open-circuit output voltage shall be 7.9 mV at 1V, 1 Pascal. Output shall be low impedance balanced (100 ohms). The output of the microphone shall be a 3-pin XLRM-type connector. The microphone shall be equipped with a switchable 10 dB pad, a switch that permits choice of flat response or 80 Hz low-frequency roll-off and a polar pattern selection switch. The microphone shall be 188.0 mm (7.40") long and have a maximum body diameter of 53.4 mm (2.10"). Weight shall be 524 g (18.5 oz). The AT4047MP Specifications Element Polar patterns Frequency response Low frequency roll-off Open circuit sensitivity Impedance Maximum input sound level The Audio-Technica AT4047MP is specified. Noise1 Dynamic range (typical) Signal-to-noise ratio1 Phantom power requirements Switches Weight Dimensions Output connector Audio-Technica case style Accessories furnished Externally-polarized (DC bias) condenser Cardioid, Omnidirectional, Figure-of-eight 20-18,000 Hz 80 Hz, 12 dB/octave –42 dB (7.9 mV), re 1V at 1 Pa 100 ohms 155 dB SPL, 1 kHz at 1% T.H.D.; 165 dB SPL, with 10 dB pad (nominal) 14 dB SPL 141 dB, 1 kHz at Max SPL 80 dB, 1 kHz at 1 Pa 48V DC, 3.4 mA typical Polar selection; Flat, roll-off; 10 dB pad (nominal) 524 g (18.5 oz) 188.0 mm (7.40") long, 53.4 mm (2.10") maximum body diameter Integral 3-pin XLRM-type R1 AT8449/SV shock mount for 5/8"-27 threaded stands; microphone dust cover; protective carrying case In the interest of standards development, A.T.U.S. offers full details on its test methods to other industry professionals on request. 1 Pascal = 10 dynes/cm2 = 10 microbars = 94 dB SPL 1 Typical, A-weighted, using Audio Precision System One. Specifications are subject to change without notice. cardioid frequency response: 20 –18,000 Hz 50 100 LEGEND 500 200 2k 1k Frequency in Hertz 12" or more on axis Roll-off 5k 10k 20k 50 0˚ 330˚ 60˚ 210˚ 180˚ 150˚ SCALE IS 5 DECIBELS PER DIVISION 5k 10k 20k 30˚ 60˚ 90˚ 270˚ 120˚ 240˚ 0˚ 300˚ 90˚ 270˚ 500 200 2k 1k Frequency in Hertz 12" or more on axis Roll-off omni polar pattern 30˚ 300˚ 100 LEGEND cardioid polar pattern 330˚ 10 dB Response in dB 10 dB Response in dB omni frequency response: 20 –18,000 Hz 120˚ 240˚ LEGEND 200 Hz 1 kHz 5 kHz 8 kHz 210˚ 180˚ 150˚ SCALE IS 5 DECIBELS PER DIVISION LEGEND 200 Hz 1 kHz 5 kHz 8 kHz figure-of-eight frequency response: 20 –18,000 Hz 10 dB 50 100 LEGEND 500 200 2k 1k Frequency in Hertz 12" or more on axis Roll-off 5k 10k Response in dB microphone shall include a shock mount, a dust cover and a protective carrying case. 20k figure-of-eight polar pattern 330˚ 0˚ 30˚ 60˚ 300˚ 90˚ 270˚ 120˚ 240˚ 210˚ 180˚ 150˚ SCALE IS 5 DECIBELS PER DIVISION LEGEND 200 Hz 1 kHz 5 kHz 8 kHz Audio-Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224 Audio-Technica Limited, Old Lane, Leeds LS11 8AG England ©2009 Audio-Technica U.S., Inc. audio-technica.com 0001-0258-00
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