Personal Audio
HD 449 - Sennheiser USA
Article No. 504767
Key Features
- Extendable cable system
- Includes a carrying pouch
- Aggressive noise isolating design
- Advanced acoustic system provides lifelike detail
On Ear Headphones - Noise Cancelling / Isolating
$119.95
Related product
$119.95
General Description
Those wanting to get closer to their music and movies owe the HD 449 a listen. Using specially tuned acoustic transducers, the HD 449 reproduces clean, intimate sound waves directly into your ears for a lifelike sound that helps you rediscover your music all over again. The leatherette earpads block out ambient noise, allowing you to listen at a safer levels with a much greater attention to the enhanced detail this headphone provides. The included cable extension adds length on-demand for listening on-the-move or at home.
Features
- Extendable cable system for home or portable use (short cable with longer extension- 4 ft, + 5 ft respectively)
- Closed design blocks ambient noise
- Acoustically tuned for lifelike detail and natural frequency response
- Low-impedance transducer system is ideal for use with portable media devices (tablets, MP3 players, smartphones, netbooks)
- Soft leatherette cushions are replaceable and plush for long-term listening comfort
Delivery Includes
- HD 449 headphones
- 5 ft extention cable
- 1/8" (3.5mm) to 1/4" (6.3mm) adapter
- Carrying pouch
$119.95
Technical Data
| Frequency response | 16-24,000 Hz |
| Transducer principle | Closed, dynamic |
| Ear coupling | Around-the-ear, leatherette |
| Impedance | 32Ωs |
| Max SPL | 114 dB |
| Cable length | 4 ft, 5 ft extension included |
| Total Harmonic Distortion | <0.1% |
| UPC code | 615104218093 |
| EAN code | 4044155071634 |
| Dimensions (single package) | 8.03 x 3.66 x 9.45 in |
| Weight (single package) | 16.7 oz |
| Dimensions (master carton) | 16.73 x 12.01 x 10.35 in |
| Weight (master carton) | 7.8 lbs |
| Master carton quantity | 6 |
| Dimensions (single) | 8.03 x 3.66 x 9.45 in |
| Weight (single) | 16.7 oz |
$119.95
Recommended Accessories
| Part/Accessory | Article No. |
| Carrying Pouch | 528104 |
|
Sennheiser (Black Logo) Carrying Pouch 250 mm (9.84 in) x 300 mm (11.81 in) |
|
| Ear cushions | 534441 |
|
Earpads for the HD 428, HD 438, and HD 448, HD 448, HD 449 |
|
| Extension cable | 534446 |
|
Extension cable for the HD 448 |
|
Glossary
| Cable length |
| The cable length is usually measured between the anti-kink sleeves of the cable (cable length without connectors). |
| Ear coupling |
| A distinction is made between headphones which are worn on the external ear (supra-aural) and those which surround the ear (circumaural). Open headphones have foam ear pads that rest on the ears or ring pads that surround the ears. Closed headphones, on the other hand, nearly always have circumaural ear pads. |
| Frequency response |
| The frequency response of a microphone is given within the limits defined by the manufacturer. In studio condenser microphones it is generally within the range of between 20 Hz and 20 kHz. |
| Impedance |
| Impedance expresses the AC resistance of a microphone or a set of headphones. It is dependent on frequency and is given at 1 kHz as the so-called nominal impedance. Impedance is measured in ohms. In recent years, an industrial standard has developed, setting the impedance of headphones at 50 or 600 ohms. Sennheiser headphones are manufactured according to this standard, thus practically ruling out connection problems. With microphones, the input impedance of the following microphone amplifier should have at least three times the value of the nominal impedance, in order to prevent it from unnecessarily attenuating the microphone signal. |
| Transducer principle |
| Two transducer principles have become established for the conversion of electric energy into mechanical energy: electrodynamic and electrostatic transducers, whereby the latter is only to be found in audiophile systems, due to their relatively high manufacturing costs. Electrodynamic transducers basically consist of a ring-shaped permanent magnet and an oscillation coil, which is fixed to the receiver diaphragm. When an audio-frequency alternating current is passed through the oscillation coil, it is caused to vibrate in accordance with the audio-frequency alternating current, thus causing the diaphragm to vibrate in the same way. |
