HDA 280

Audiometric headphones

Design approved by the PTB (German national institute for science and technology).

The headphones comply with IEC 60645-1.

Important!

The HDA 280 is designed for use with an audiometer!

After exchanging audiometric headphones, the audiometer has to be re-calibrated!

Specifications

Cat. No.

9860

1 unit

 

9861

24 units/carton

 

 

Transducer principle

dynamic, closed

 

 

Ear coupling

supra-aural

 

 

Frequency response

< 20 Hz to > 20 kHz

 

 

Characteristic SPL

117 dB (at 1 kHz, 1 mW)

 

 

Max. L/R deviation

125 Hz – 4 kHz < 1.5 dB

 

4 kHz – 12 kHz < 2 dB

 

 

Max. nominal continuous

500 mW (as per EN 60268-7)

input power

 

 

 

 

 

Nominal impedance

37 Ω

 

 

 

Contact pressure

5 N ± 0.5 N

 

 

Connection cable

approx. 3 m, open-ended

 

 

 

Weight (with cable)

330 g

 

 

 

 

Connection code

green

+ L

 

copper

– L

 

red

+ R

 

copper

– R

 

 

 

measured at normal climate: temperature = 20 °C,

relative humidity = 50 %, atmospheric pressure approx. 100 kPa

Frequency response curve

dBr

 

 

 

 

 

 

+140

 

 

 

 

 

 

+135

 

 

 

 

 

 

+130

 

 

 

 

 

 

+125

 

 

 

 

 

 

+120

 

 

 

 

 

 

+115

 

 

 

 

 

 

+110

 

 

 

 

 

 

+105

 

 

 

 

 

 

+100

 

 

 

 

 

 

+95

 

 

 

 

 

 

+90100

200

500

1k

2k

5k

10k

 

 

 

Hz

 

 

 

Measured with B&K 4152 as per IEC 60318-3

Headphone input voltage 500 mVrms

Pure tone RETSPL

 

Pure tone reference equivalent

 

 

 

 

 

Max. SPL

 

threshold sound pressure level

 

on B&K 4152 < 10 min.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Frequency (Hz)

 

dB (re 20 µPa)

 

 

 

 

 

 

 

 

dB (at 4 V)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

125

38.5

143 ± 3

 

250

25.0

144 ± 3

 

500

13.0

144 ± 3

 

750

9.0

144 ± 3

 

1000

7.5

145 ± 3

 

1500

9.5

145 ± 3

 

2000

8.0

138 ± 3

 

3000

6.5

133 ± 3

 

4000

9.5

137 ± 3

 

6000

19.0

132 ± 5

 

8000

18.0

122 ± 5

 

*

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

18.5

110 ± 5

 

10000

 

12500

30.5

122 ± 5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Reference equivalent threshold sound pressure level (re 20 µPa) for the HDA 280 headphones and a coupler as per IEC 60318-3

* additional values following ISO 389-1

Peak-to-peak RETSPL

For clicks, 20 Hz

on an ear simulator as per IEC 60318-1 and

on an acoustic coupler as per IEC 60318-3

pe RETSPL = 31.5 dB (re 20 µPa).

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Sennheiser HDA 280 Audiometric headphones, Specifications, Frequency response curve, Pure tone Retspl, Peak-to-peak Retspl

HDA 280 specifications

The Sennheiser HDA 280 headphones represent a remarkable blend of audio fidelity, comfort, and durability, making them a popular choice among audio professionals and enthusiasts alike. These headphones are designed to deliver an immersive listening experience, whether for critical monitoring in studios or casual listening at home.

One of the standout features of the HDA 280 is its exceptional sound quality. The headphones employ Sennheiser's advanced transducer technology, ensuring a balanced, natural sound reproduction across a wide frequency range. The frequency response of the HDA 280 extends from 8 Hz to 25 kHz, allowing listeners to experience deep, rich bass as well as crisp highs. This makes them ideal for a variety of audio content, from music production to gaming and multimedia consumption.

Comfort is also a key characteristic of the HDA 280. The headphones are equipped with plush ear pads that provide effective passive noise isolation, allowing users to focus on their audio without outside distractions. The adjustable headband is padded and designed for extended wear, catering to long sessions of use without causing fatigue. This ergonomic design ensures that the headphones fit securely while remaining comfortable, which is crucial for professionals who rely on long hours of monitoring.

Durability is another notable aspect of the HDA 280. Constructed with high-quality materials, these headphones are built to withstand the rigors of both studio and on-the-go use. The cables are detachable and come with a robust connector, further enhancing the product's longevity. With replaceable parts available, users can maintain their headphones over time, ensuring they remain a reliable tool in their audio arsenal.

The HDA 280 headphones also feature a closed-back design, which aids in sound isolation. This design minimizes sound leakage, making them suitable for environments where high-quality sound monitoring is vital. Additionally, the headphones are lightweight, making them easy to transport, whether you are heading to a recording session or traveling.

In summary, the Sennheiser HDA 280 combines high-quality audio performance, superior comfort, and rugged durability. With its advanced sound technology, ergonomic design, and robust construction, it stands out as an excellent choice for audio professionals and audiophiles alike, who demand reliable performance without compromising on sound quality. Whether for studio work or personal enjoyment, the HDA 280 headphones prove to be a versatile and valuable addition to any audio setup.