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Sennheiser HDA 280 User manual

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Cat. No. 009860
HDA 280
Audiology | Special Headphones
Description
The HDA 280 is a pair of closed, dynamic headphones designed for use
with audiometers.
Technical Data
Frequency response ...................................... < 20 Hz to > –20 kHz
Transducer principle................................................ dynamic, closed
Nominal inmpedance ..................................................................37 Ω
Characteristic SPL ....................................117 dB (at 1 kHz, 1 mW)
Max. nominal continuous
input power .....................................500 mW (as per EN 60268-7)
Ear coupling ........................................................................supraaural
Contact pressure...............................................................5 N ± 0,5 N
Weight (with cable).................................................................. 330 g
Connection cable..................................... approx. 3 m, open-ended
Core assignment .................................................................green + L
copper — L
red + R
copper — R
Replacement Parts
j
Headband Cat. No. 083321
Product Variants
j
HDA 280-N (24 units/carton) Cat. No. 009861
Features
j
Position-independent audiometer headphones
j
Type approved by the German Physikalisch-Technische Bundesanstalt
(PTB) as per IEC 60645-1
j
Excellent reproducibility of measurements
j
Soft, exchangeable ear pads
j
Space-saving design with collapsible, rotating ear-pieces
j
Comfortable to wear due to exchangeable headband padding
j
Single-sided, exchangeable cable