Sennheiser HDA 300 новые наушники для аудиометрии.
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 centres. 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.
Наушники Sennheiser HDA 300 технические характеристики:
Frequency response 20–20,000 Hz
Transducer principle dynamic, closedNominal impedance 23 O
Characteristic SPL 104 dB at 1 kHz, 1 mW
Nominal load 500 mW
Ear coupling circumaural
Contact pressure 8,8 N
Weight (with cable) approx. 450 g
Connection cable approx. 3 m, single-sided
