Sennheiser HDA 280 User manual

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
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Headband Cat. No. 083321
Product Variants
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HDA 280-N (24 units/carton) Cat. No. 009861
Features
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Position-independent audiometer headphones
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Type approved by the German Physikalisch-Technische Bundesanstalt
(PTB) as per IEC 60645-1
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Excellent reproducibility of measurements
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Soft, exchangeable ear pads
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Space-saving design with collapsible, rotating ear-pieces
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Comfortable to wear due to exchangeable headband padding
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Single-sided, exchangeable cable