headset, film, TV applications, super cardioid microphone
General Description
Based on the closed-back, dynamic HD 280 Pro headphones, the HMD 280 Pro headset has been especially designed for communications in high-noise environments. Its dynamic, super-cardioid microphone has been optimized for close talking distances.
Features
- Noise-compensation microphone with extremely low handling noise
- Microphone can be worn on either left or right hand side
- Easily replaceable, single-sided coiled cable
- Very good attenuation of background noise
- Nominal headphone impedance 300ohm
- Terminated with tinned leads
headset, film, TV applications, super cardioid microphone
Technical Data
| Attenuation |
Max. 32 dB |
| Characteristic SPL |
102 dB |
| Connector |
Unterminated coiled cable, min. 1m / max. 3m |
| Distortion |
< 1% |
| Ear coupling |
Around-the-ear, closed |
| Frequency response |
8 - 25,000 Hz |
| Frequency response (microphone) |
50 - 13,500 Hz |
| Nominal impedance |
300 Ω / side |
| Sensitivity |
1 mV/Pa |
| Transducer principle |
Dynamic |
| Transducer principle |
Dynamic |
| Weight w/o cable |
Approx. 7.8 oz. (220 g) |
headset, film, TV applications, super cardioid microphone
Recommended Accessories
| Part/Accessory |
Article No. |
| 085733 |
085733 |
Ear cushion, pr, HD/HMD280/281
|
headset, film, TV applications, super cardioid microphone
Variants
| HMD 281-XQ |
|
Model #USHMD281-XQ |
MSRP: $420.00 |
| HMD 281 terminated with a 3-pin XLR connector, and 1/4" headphone plug. |
Glossary
| Attenuation |
| A reduction in volume. Opposite of "amplification". |
| Connector |
| A standardised single or multi-pole plug for connecting units or accessories. |
| Ear coupling |
| A distinction is made between headphones which are worn on the external ear (supra-aural) and those which surround the ear (circumaural). Open headphones have foam ear pads that rest on the ears or ring pads that surround the ears. Closed headphones, on the other hand, nearly always have circumaural ear pads. |
| Frequency response |
| The frequency response of a microphone is given within the limits defined by the manufacturer. In studio condenser microphones it is generally within the range of between 20 Hz and 20 kHz. |
| Frequency response (microphone) |
| The frequency response of a microphone is given within the limits defined by the manufacturer. In studio condenser microphones it is generally within the range of between 20 Hz and 20 kHz. |
| Nominal impedance |
| See impedance. |
| Transducer principle |
| Two transducer principles have become established for the conversion of electric energy into mechanical energy: electrodynamic and electrostatic transducers, whereby the latter is only to be found in audiophile systems, due to their relatively high manufacturing costs. Electrodynamic transducers basically consist of a ring-shaped permanent magnet and an oscillation coil, which is fixed to the receiver diaphragm. When an audio-frequency alternating current is passed through the oscillation coil, it is caused to vibrate in accordance with the audio-frequency alternating current, thus causing the diaphragm to vibrate in the same way. |
| Transducer principle |
| Two transducer principles have become established for the conversion of electric energy into mechanical energy: electrodynamic and electrostatic transducers, whereby the latter is only to be found in audiophile systems, due to their relatively high manufacturing costs. Electrodynamic transducers basically consist of a ring-shaped permanent magnet and an oscillation coil, which is fixed to the receiver diaphragm. When an audio-frequency alternating current is passed through the oscillation coil, it is caused to vibrate in accordance with the audio-frequency alternating current, thus causing the diaphragm to vibrate in the same way. |
