Personal Audio
HD 518 - Sennheiser USA
Article No. 504628
Key Features
- Impeccable styling cues
- Superb detail and bass impact
- Long-term, affordable comfort
- E.A.R. channels audio directly to the ear
Audio Headphones - Around Ear Headphones
$129.95
Related product
$129.95
General Description
The HD 518 open, around-the-ear audiophile headphones prove that quality and affordability can go hand-in-hand. They are fitted with Sennheiser’s innovative E.A.R. technology to ensure accurate channeling of audio signals into your ears while their sophisticated Duofol diaphragms reduce unwanted resonances to an absolute minimum. And to enhance your listening pleasure beyond those generic, unspectactular headphones, the HD 518 features incredibly comfortable padding for long listening sessions.
Features
- High-end open circumaural headphones with E.A.R. technology for excellent sound reproduction with deep rich bass
- Sennheiser's innovative “Ergonomic Acoustic Refinement” (E.A.R.) design channels audio signals directly into your ears
- State-of-the-art, advanced Duofol diaphragms for transparency and minimal distortion
- Highly optimized, field-strengthened neodymium ferrous magnet systems for an excellent dynamic response
- Lightweight aluminum voice coils for high efficiency and excellent dynamics
- Soft, crackle-free ear pads and headband cushion provide outstanding listening comfort
- Distinctive grille-like ear cup casing design
- Excellent connectivity, also with home Hifi equipment
- 2-year warranty
Delivery Includes
- HD 518
- 3.5 mm adapter
$129.95
Technical Data
| Transducer principle | Dynamic, open |
| Wearing style | Around-the-ear |
| Frequency response | 14-26,000 Hz |
| Total harmonic distortion (THD) | < 0.2% |
| Impedance | 50 ohms |
| Cable length | 10 ft, detachable (single-sided) |
| Jack plug | 1/4 inch (6.3mm) |
| Weight | 8.6 oz (255 g) |
| EAN code | 4044155056037 |
| UPC code | 615104187672 |
| Master carton quantity | 6 |
| Dimensions (single) | 8.07 x 3.94 x 9.45 in |
| Weight (single) | 1.42 lbs |
| Dimensions (master carton) | 16.81 x 13.66 x 10.51 in |
| Weight (master carton) | 10.5 lbs |
$129.95
Recommended Accessories
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| HH 10 | 510615 |
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Headphone holder for all over-the-head style headphones. ships with any new HD485 or HD595. |
|
Glossary
| Cable length |
| The cable length is usually measured between the anti-kink sleeves of the cable (cable length without connectors). |
| 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. |
| Jack plug |
| A common audio connector in consumer electronics and music industry. Available in various diameters; in the hi-fi segment, 1/8" and ¼" are widely used. Poles range from one to four. (Examples: headphone jack or jack of an electric guitar). |
| Total harmonic distortion (THD) |
| Total harmonic distortion is a measure of non-linear harmonic distortion and is given in %. Non-linear harmonic distortions are signals which were not present in the original before the signal was converted by the headphones. These unwanted signals are caused by the diaphragm, whose movements do not precisely move in time with the electric signals that cause it to move. Unfortunately, this is a feature of all electroacoustic transducers. Although it cannot be completely eliminated, suitable steps can be taken to minimise it. However, the user is not interested in why this distortion takes place but in how great the level of distortion must be for it to become perceptible. According to the findings of several research projects, a total harmonic distortion of 1% in the frequency range of 100 to 2000 Hz is imperceptible. Below 100 Hz, the perceptibility threshold lies at 10%. |
| 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. |
$129.95
The following exclusive Sennheiser dealers carry the HD 518:
| All Latin America dealers |
| Amazon.com |
| Electronics Expo |
| HeadRoom |
| J&R |
| Razordogdeals.com |
