Personal Audio
HD 203 - Sennheiser USA
Article No. 504290
Key Features
- Ideal for home recording
- Rugged yet lightweight design
- Full-range, detailed frequency response
- Exceptional isolation from background noise
Stereo Headphones - DJ MP3 Closed Lightweight Headphones
$49.95
Related product
$49.95
General Description
The HD 203 studio stereo headphones are the ideal partner for home recording. The rugged lightweight headphones have a secure fit that blocks out ambient noise and keeps your music and monitoring cues from leaking out to adjacent microphones or other people. This headphone is versatile enough for use with portable audio devices like MP3 players but also the latest audio interfaces and home recording gear.
Features
- Closed, semi-around-the-ear dynamic headphones
- Excellent attenuation of ambient noise
- Powerful neodymium magnets and lightweight diaphragms capable of high SPL's
- Extremely comfortable to wear for extended tracking or monitoring sessions
- Innovative headband design is flexible for any size or shape head
- Replaceable leatherette ear pads
- 10 ft cable
- 2-year Warranty
- Compatible (listen only) with latest generation of tablets
Delivery Includes
- HD 203
- Adaptor to ¼“ (6.3mm) stereo jack
$49.95
Technical Data
| Impedance | 32 ohms |
| Transducer principle | Dynamic, closed |
| Ear coupling | Around-the-ear |
| Frequency response | 18 - 18,000 Hz |
| Sound pressure level (SPL) | 115 dB (1kHz, 1Vrms) |
| Total harmonic distortion (THD) | <0.5% |
| Jack plug | 1/8 |
| EAN Code | 4044155054682 |
| UPC Code | 615104185760 |
| Dimensions (individual) | 9.5 x 8 x 3 inches |
| Weight (individual) | 12.7 oz |
| Dimensions (master carton) | 17.3 x 9.5 x 10.1 |
| Weight (master carton) | 7.23 lbs |
| Master Carton Quantity | 6 |
Glossary
| 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. |
| 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). |
| Sound pressure level (SPL) |
| Due to the impractical numerical values, the sound pressure is usually given as the logarithmic value of the sound pressure level according to the equation: dB SPL = 20 x log (po / 0.00002 Pa). The abbreviation SPL (sound pressure level) is added in order to make a clear distinction from other uses of dB. The reference sound pressure, which is at the same time the threshold of hearing, is then 0 dB SPL. The threshold of pain is 140 dB SPL. A difference in the sound pressure level of 1 dB is just about perceptible, while a doubling of the sound pressure corresponds to 6 dB and a doubling of the volume corresponds to a rise of 10 dB. |
| 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. |
