Sennheiser HDA300 specifications
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Description
The HDA 300 is a pair of closed dynamic headphones designed for use with audiometers. It is used in aural-acoustical analysis and measurements for ENT doctors, educational facilities and research & health centers. The HDA 300 sound profile is based on the well known HDA 200 audiometric reference headphones, which is the standard for high frequency measurements in Audiometry since over 20 years, combined and enriched by the latest standards in terms of materials and design.
- High passive ambient noise attenuation – patients hear only what they are supposed to hear – no disturbing outside sounds
- Equipped with two mono plugs for immediate use: time saving for customers during set up, no special built necessary
- Soft, replaceable ear pads & two padded headbands for increased comfort and perfect fit also for long testing periods
- Single-sided cable: no tangling around with the cable when placed on patient head
| Specification | Value |
|---|---|
| Connector | 2 Mono-Jacks; Green: -L, yellow: +L, red: +R, blue: -R |
| Frequency response (Headphones) | 20 Hz - 20,000 Hz |
| Characteristic SPL | 117dB at 1kHz, 0.5V |
| Contact pressure | 8.8N ± 0.5N |
| Ear coupling | circumaural |
| Connection cable | approx. 2.2m |
| Transducer principle | dynamic, closed |
| Weight | incl. cable: 490 g |
| Nominal impedance | 23 Ohm |
| Load rating | 500 mW |
| Max. Input voltage | 3.5 V, < 10 min |