ราคา 10,250.00 บาท
ราคาปกติ : 11,700.00 บาท
ประหยัดไป 1,450.00 บาท
Cardioid Condenser Boundary Microphone
Offering outstanding Audio-Technica sound for surface-mount applications, the U851A features a PivotPoint® rotating output connector, UniSteep® filter and UniGuard® RFI-shielding technology. This battery- or phantom-powered condenser microphone accepts interchangeable condenser elements—available for boundary microphones in cardioid, hypercardioid and omnidirectional polar patterns. Its heavy die-cast case and silicon foam bottom pads minimize coupling of surface vibration to the microphone. With superior off-axis rejection and maximum gain-before-feedback, this professional microphone sets audio-quality standards in challenging acoustic environments.
Features
ELEMENT | Fixed-charge back plate, permanently polarized condenser |
POLAR PATTERN |
Half-cardioid (cardioid in hemisphere above mounting surface) |
FREQUENCY RESPONSE | 30-20,000 Hz |
LOW FREQUENCY ROLL-OFF | 80 Hz, 18 dB/octave |
OPEN CIRCUIT SENSITIVITY |
Phantom: –40 dB (10.0 mV) re 1V at 1 Pa Battery: –41 dB (8.9 mV) re 1V at 1 Pa |
IMPEDANCE |
Phantom: 200 ohms Battery: 270 ohms |
MAXIMUM INPUT SOUND LEVEL |
Phantom: 133 dB SPL, 1 kHz at 1% T.H.D. Battery: 123 dB SPL, 1 kHz at 1% T.H.D. |
DYNAMIC RANGE (typical) |
Phantom: 111 dB,1 kHz at Max SPL Battery: 101 dB, 1 kHz at Max SPL |
SIGNAL-TO-NOISE RATIO | 72 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) | 8.6 oz (244 g) |
WEIGHT (POWER MODULE) | 4.9 oz (139 g) |
DIMENSIONS (MICROPHONE) |
4.25" (108.0 mm) long, 3.31" (84.0 mm) maximum width, 0.91" (23.0 mm) height |
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 | 25.0' (7.6 m) long (permanently attached to microphone), 0.13" (3.2 mm) diameter, 2-conductor, shielded cable with TA3F-type connector |
OPTIONAL INTERCHANGEABLE ELEMENTS |
UE-H hypercardioid (100°); UE-O omnidirectional (360°) |
ACCESSORIES FURNISHED | AT8531 power module; battery; soft protective pouch |