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pdf 238.70 KBU857AU Specification Sheet
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U857AU UniLine® Condenser Adapter-Mount Gooseneck Microphone
Audio-Technica’s U857AU incorporates the most essential ingredients for quality sound reproduction for a wide range of installed applications. Equipped with A-T’s UniLine™ line-cardioid element with a tightly focused 90º acceptance angle, the U857AU features a small-diameter gooseneck with virtually no “memory.” Its ultra-flexible, robust design permits easy adjustment into desired shape while resisting inadvertent repositioning. The 16.81"-long UniLine condenser direct mounts to any 5/8"-27 stand. Featuring UniGuard® innovations that offer unsurpassed immunity from radio frequency interference, the U857AU accepts interchangeable elements, available in cardioid, hypercardioid, omnidirectional and UniLine™ line cardioid polar patterns. The battery- or phantom-powered microphone also offers an 80 Hz low-cut UniSteep® filter that reduces pickup of low-frequency ambient noise.- Designed for high-quality sound reinforcement, professional recording and broadcasting
- UniLine™ polar pattern provides narrow 90º acceptance angle
- Superior off-axis rejection for maximum gain before feedback
- UniGuard® RFI-shielding technology offers outstanding rejection of radio frequency interference (RFI)
- Easy-to-adjust, rugged, small-diameter, alternating gooseneck with virtually no “memory” permits quick positioning into desired shape
- UniSteep® filter provides a steep low-frequency attenuation to improve sound pickup without affecting voice quality
- Accepts interchangeable elements to permit angle of acceptance from 90° to 360°
- Two-stage foam windscreen yields dramatically improved resistance to P-pops and other breath blasts
- Direct mounts to any 5/8"-27 stand, or to included threaded mounting flange
- Operates on battery or phantom power
| SPECIFICATIONS | |
|---|---|
| ELEMENT | Fixed-charge back plate, permanently polarized condenser |
| POLAR PATTERN | Line cardioid |
| FREQUENCY RESPONSE | 30-20,000 Hz |
| LOW FREQUENCY ROLL-OFF | 80 Hz, 18 dB/octave |
| OPEN CIRCUIT SENSITIVITY | Phantom: –38 dB (12.5 mV) re 1V at 1 Pa
Battery: –39 dB (11.2 mV) re 1V at 1 Pa |
| IMPEDANCE | Phantom: 200 ohms
Battery: 270 ohms |
| MAXIMUM INPUT SOUND LEVEL | Phantom: 130 dB SPL, 1 kHz at 1% T.H.D.
Battery: 120 dB SPL, 1 kHz at 1% T.H.D. |
| DYNAMIC RANGE (typical) | Phantom: 110 dB, 1 kHz at Max SPL
Battery: 100 dB, 1 kHz at Max SPL |
| SIGNAL-TO-NOISE RATIO | 74 dB, 1 kHz at 1 Pa |
| PHANTOM POWER REQUIREMENTS | 11-52V DC, 2 mA typical |
| BATTERY TYPE | 1.5V AA/UM3 |
| BATTERY CURRENT / LIFE | 0.4 mA / 1200 hours typical (alkaline) |
| SWITCH | Off, on-flat, on-roll-off |
| WEIGHT (MICROPHONE) | 5.0 oz (141 g) |
| WEIGHT (POWER MODULE) | 4.9 oz (139 g) |
| DIMENSIONS (MICROPHONE) | 16.81" (427.0 mm) long,
0.48" (12.2 mm) head diameter |
| DIMENSIONS (POWER MODULE) | 3.31" (84.0 mm) H x
2.48" (63.0 mm) W x 0.87" (22.0 mm) D |
| OUTPUT CONNECTOR (POWER MODULE) | Integral 3-pin XLRM-type |
| CABLE | 9.8' (3.0 m) long (permanently attached to microphone), 0.13" (3.2 mm) diameter, 2-conductor shielded cable with TA3F-type connector |
| OPTIONAL INTERCHANGEABLE ELEMENTS | UE-C cardioid (120°);
UE-H hypercardioid (100°); UE-O omnidirectional (360°) |
| ACCESSORIES FURNISHED | AT8531 power module; AT8154 two-stage foam windscreen; AT8663 A-mount flange; AT8664 A-mount cable pass-through adapter; battery |
| AUDIO-TECHNICA CASE STYLE | M33 |
| SPECIFICATION GRAPHS | ||
|---|---|---|
| Click on the chart to view the larger image | ||
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Conditions
U857AU : UniLine® Condenser Adapter-Mount Gooseneck Microphone
