| Ear coupling |
Around-the-ear (Circumaural) |
| Hardware |
Lightweight Alloy |
| Connector Type |
6-Pin Redel Plug for panel DC Power & intercom connections |
| Connection Cable |
0.155" (4-mm) OD shielded cable, length ~ 6 ft. (1.8 m) |
| Weight w/o cable |
~ 12.3 oz. (349 g) |
| Battery life |
Up to 50 hours (2 AA batteries) |
| Operating temperature |
-20C to +70C |
| Operating voltage |
11-30 VDC or 3 VDC (2x AA) |
| Dome type |
ABS |
| Characteristic SPL |
~95 dB SPL (1 kHz, 1 mW) @ maximum volume nominal |
| Contact pressure |
~1.4 lb. (6.2 N) |
| ENC peak attenuation |
30dB @ 150Hz |
| ENC attenuation range |
20Hz - 1KHz |
| Total harmonic distortion (THD) |
< 1% - 110 dB SPL (300 - 3,000 Hz) |
| Ear Transducer principle |
Dynamic |
| Ear Impedance |
150 Ω mono / 300 Ω stereo (each ear) |
| Ear Freq Response |
12 - 15,000 Hz |
| Microphone principle |
pre-polarized condenser microphone (electret), noisecancelling |
| Mic Impedance |
150O nominal |
| Mic Sensitivity |
400mV+/-6dB into 150 Ω load @ 1kHz for 114 dB SPL input |
| Mic Freq Response |
150 - 8,000 Hz |
| Mic DC Supply V. |
8-16V, not polarity sensitive |
| Source Resistance |
470Ω |
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