| Element |
Fixed-charge back plate, permanently
polarized condenser |
| Polar Pattern |
Omnidirectional |
| Frequency Response |
20-20,000 Hz |
| Low Frequency Roll-off |
80 Hz, 18 dB/octave
(wired only) |
| Open Circuit Sensitivity |
–49 dB (3.5 mV) re 1V at 1 Pa |
| Impedance |
250 ohms (wired only) |
| Maximum Input Sound Level |
135 dB SPL, 1 kHz at 3% T.H.D. |
| Dynamic Range (Typical) |
104 dB, 1 kHz at Max
SPL (wired only) |
| Signal-to-Noise Ratio |
63 dB, 1 kHz at 1 Pa |
| Phantom Power Requirements |
11-52V DC, 2 mA
typical (wired only) |
| Battery Type |
0.1 mA typical at 5V (wireless only) |
| Battery Life |
2.5-11V (wireless
only) |
| Switch(es) |
Flat, roll-off (wired only) |
| Weight |
Microphone, boom &
earpiece: 2.6 g (0.09 oz) Power module (wired only): 85 g (3.0 oz) |
| Dimensions |
Microphone: 8.1 mm (0.32") long, 2.6
mm (0.10") diameter Boom: 98.4 mm (3.87") long, 1.07 mm (0.04") diameter
Power module (wired only): 97.6 mm (3.84") long, 18.9 mm (0.74")
diameter |
| Output Connector |
Power module:
Integral 3-pin XLRM-type |
| Cable(s) |
1.4 m (55") long (permanently attached
to microphone), 1.6 mm (0.06") diameter, 2-conductor shielded cable with
locking 4-pin connector (wired only) |
| Accessory Included |
AT8539 power module
(wired only); AT8440 cable clip; AT8464 dual-ear mount; two AT8157
windscreens; two AT8156 element covers; moisture guard; belt clip (wired
only); carrying case |
