Personal Audio
PXC 250-II - Sennheiser USA
Article No. 502818
Key Features
- Integrated volume control
- Travel-friendly size, Sennheiser sound
- Dramatically reduces droning noise via NoiseGard
- Works as a headphone with/without NoiseGard activated
Noise Cancelling Headphone - Travel headphones
$199.95
Related product
$199.95
General Description
The successor to the hugely successful PXC 250 is here-- the brand-new PXC 250-II improves upon the previous model making it our best value yet.
The mark II on-ear, collapsible mini headphones are equipped with NoiseGard™ technology to cancel up to 80% of droning, fatiguing airplane or bus cabin noise without added bulk or size. They are also equipped with a convenient in-line volume control which enables the listener to adjust playback volume even when the music player is stowed.
The PXC 250-II headphones are foldable and also function as normal headphones without NoiseGard activated. A single AAA battery provides up to 50 hours of NoiseGard performance. An extensive set of accessories - in-flight audio adapter, carrying case and AAA battery- completes the package.
Features
- Sennheiser NoiseGard™ technology dramatically reduces droning background noise
- NoiseGard controls have been reduced in size by 50% for increased handling convenience and better portability
- Neodymium magnets and Duofol™ diaphragms for audiophile-grade sound reproduction
- Integrated volume control for enhanced usability and convenience
- Collapsible design with metal-reinforced headband ensures portability and durability
- Operates for about 50 hours on a single AAA battery
- Optimized for portable media players and in-flight entertainment systems
- Built-tough with a 2 YEAR warranty!
- Compatible (listen only) with latest generation of tablets
Delivery Includes
- PXC 250-II headphones
- AAA battery
- In-flight audio adapter (dual 1/8 inch/3.5mm mono plug)
- Carrying pouch
$199.95
Technical Data
| Frequency response | 10-21,000 Hz |
| Cable length | 4.9 ft, symmetrical |
| Sound pressure level (SPL) | 112 dB |
| Ear coupling | On-the-ear |
| Connector | 1/8 inch (3.5mm) |
| Operating time | <50 hours |
| Noise cancelling | Up to 80% |
| Battery | single AAA |
| Impedance | 300/160 ohms (active/passive) |
| Total harmonic distortion (THD) | <0.1% |
| (*) | -------------- |
| UPC code | 615104169241 |
| EAN code | 4044155044447 |
| Dimensions (single) | 4.92 x 3.07 x 7.87 inches |
| Weight (single) | 14.18 ounces |
| Dimensions (master carton) | 21.10 x 11.50 x 10.04 inches |
| Weight (master carton) | 14.49 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. |
| Operating time |
| States how long a unit can be continuously used with one set of batteries / rechargeable accupack. |
| 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%. |
