PRYME Radios Noise Reduction Headset HP90-21 is a professional-grade intercom noise reduction headset, designed for use in high-noise environments, HP90-21 built-in PTT call button, rear-mounted fixed hoop, the top of the head is fixed by an adjustable magic stick, making it convenient for the user to wear the helmet.
It is widely used in airport, racing track, Engineering Command, Stage Command and other high noise complex environment
- ●Dual muff style headset with adjustable over-the-head, padded headband
- ●Lightweight, comfortable and easy to adjust
- ●Aviation-style boom microphone with flexible arm
- ●Standard Electret Condensor Microphone provides clear, crisp audio in all applications.Dynamic and electronic Noise Cancelling Microphone elements optional and very easy to change (2 screws)
- ●Tactile PTT button mounted on right earcup.Adjustable volume control on left earcup
- ●Loud muff earphones for the user to hear incoming signals easily
●Easy to replace foam Ear Pads.Optional Gel Ear Pads and Cloth Ear Pad covers available.
●Removable and replaceable radio interface cable
●Flat black finish resists scratches and dirt.
| Earphone unit parameters | |
| Unit size | 50mm housing |
| Weight of single earmuffs | 14.8g |
| Impedance | 32Ω At around 1KHz |
| Rated power | Normal 30mW RMS Maximum 100mW |
| Output sound pressure level | 95±3dB /1mW /1cm Average at 1.0K, 1.2K, 1.5K, 2.0KHz |
| Resonance | 100Hz |
| Bandwidth | 100Hz~3000Hz |
| Microphone parameters | |
| Materials | ABS Plastic |
| Sensitivity | -47±3dB (at L=50mm) (0dB=1V/Pa,1KHz) |
| Impedance | Low impedance 680Ω |
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