HP70D is specially designed for users who need to listen to two radios at the same time. Two earmuffs of the headphones each have a PTT control button, which can control the launch of two radios respectively.
HP70D series headphones are mainly used in airports, racing tracks, stage performances, complex environment noise reduction command
- ●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 |
| Bandwidth | 300Hz~10KHz |
| Average operating voltage | 10V |
| Max operating voltage | 1.0V |
| Power consumption | Max. 0.5mA |
| Signal-to-noise ratio | More than 60dB |
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