Personal Audio
- Headphones
- Headsets
- Headphones for TV
- Microphones
CX 281 - Sennheiser USA
Article No. 502846
Key Features
- Built-in volume control
- Designed for a woman's ear
- World famous Sennheiser sound
- Includes an adapter for sharing music with a friend
Earbuds - Stereo Bass Driven Sound
$69.95
Related product
$69.95
General Description
Engineered for women, the CX 281 delivers slamming bass with a custom fit that feels and looks natural with any style. Each headphone features a totally unique gold accent design that is different from every other CX 281. These ear-canal, noise-isolating 'phones use a dynamic speaker for deep, tight bass. If you need to travel light, they include a carrying case that will hold the headphones in addition to the latest generation of iPod Nano media players. Even better, you can keep the player in your pocket and still control playback volume with the included in-line adjuster. Total control.
Features
- Designed for a woman's ear
- Includes an adapter for sharing music with a friend
- Each design is unique
- Bass-driven sound
- Secure fit in-the-ear fit blocks noise
- Hassle-free cable slider manages cable with ease
- Built-in volume control
- Compatible with iPhone and all iPods/MP3 players with a 1/8" (3.5mm) plug
- Built-tough with a 2 YEAR warranty!
- Compatible (listen only) with latest generation of tablets
Delivery Includes
- CX 281 headphones
- Ear adapter set (S/M/L)
- Storage pouch
- Share adapter (1/8" splitter)
$69.95
Technical Data
| Frequency response | 19-20,500 Hz |
| Cable length | 3.9 ft symmetrical |
| Sound pressure level (SPL) | 120 dB |
| Ear coupling | In-the-ear |
| Impedance | 16 ohms |
| Connector | 1/8 inch (3.5mm) |
| Total harmonic distortion (THD) | <0.5% |
| Weight w/o cable | 0.56 ounces |
| (*) | --------------- |
| UPC code | 615104170230 |
| EAN code | 4044155052596 |
| Dimensions (single) | 7.09 x 2.8 x 1.44 inches |
| Weight (single) | 2.72 ounces |
| Dimensions (master carton) | 13.78 x 12.01 x 9.06 inches |
| Weight (master carton) | 6.68 pounds |
| Master carton quantity | 24 |
Glossary
| Cable length |
| The cable length is usually measured between the anti-kink sleeves of the cable (cable length without connectors). |
| Connector |
| A standardised single or multi-pole plug for connecting units or accessories. |
| 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. |
| 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%. |
