Personal Audio
PXC 450 - Sennheiser USA
Article No. 500643
Key Features
- TalkThrough function
- NoiseGard™ 2.0 technology
- High-end travel headphones
- Natural, lifelike sound quality
Noise Cancelling Headphones - Stereo, Top quality Sound -
$349.95
Related product
$349.95
General Description
The PXC 450 is a premium around-the-ear travel headphone set featuring Sennheiser’s exclusive NoiseGard™ 2.0 active noise compensation system, which effectively reduces up to 90% of ambient noise. The extremely comfortable headphones offer audiophile-grade sound combined with a foldable construction for maximum enjoyment and convenient storage.
The innovative new TalkThrough function allows the user to communicate with neighbors without taking off the headphones. Unwanted background noise, such as the roar of the airplane engines, is filtered out so that only the neighbor’s voice is passed on through the headphones at top quality.
Just one AAA battery is all it takes for up to 16 hours of serene enjoyment. The PXC 450 also functions as a passive headset when used without batteries, so audio always works.
What the experts are saying:
"When traveling, and I travel a lot, these are my number one headphones, hands down.” – Lomas Brown, ESPN NFL analyst, 7-time Pro-Bowler and Super Bowl Champion
"If you're a big dog you need this PXC 450" - Ernie Sims, Indianapolis Colts
Features
- Adaptive baffle damping and patented Duofol™ diaphragm technology for pristine audio production.
- Switchable NoiseGard™ 2.0 reduces ambient noise up to 90%.
- Active/bypass mode for use as a noise cancelling or closed-back audiophile headphone.
- Luxurious materials for long-lasting comfort and exceptional durability.
- TalkThrough function for easy communication with the people around you while wearing the headphones.
- Simple-to-use volume control integrated into the headphone.
- Ideal for people on the move: comfortable, sturdy and foldable headphone design
- Audio transmission always works – even in passive mode and without the batteries
- Ideal for use with in-flight entertainment systems, MP3 players as well as home entertainment systems.
- Single-sided, detachable cable and replaceable ear pads for extended operating life.
- Comes with accessories: transport case, audio adapters (in-flight entertainment and ¼”), two AAA batteries
- Built-tough with a 2 YEAR warranty!
- Compatible (listen only) with latest generation of tablets
Delivery Includes
- Transport Case
- 2 Audio Adapter (In-flight-Entertainment and 6.3 mm)
- PXC 450 high-end travel headphone
- 2 AAA batteries
$349.95
Technical Data
| Attenuation (passive) | Up to 32 dB |
| Battery | One AAA battery |
| Cable length | 4.6 ft. (1.4 m) single-sided, replaceable |
| Connector | 3.5 mm. right-angled |
| Ear coupling | Around-the-ear |
| Frequency response (headphones) | 8 - 28,000 Hz |
| Headphone | Headband set |
| Impedance | 150/750 Ù |
| NoiseGard™ noise compensation | Up to 90% |
| Operating time | >21 h. |
| Sound pressure level (SPL) | 108 dB SPL |
| Total harmonic distortion (THD) | < 0.1% |
| Transducer principle | Dynamic |
| Weight w/o cable | 8.5 oz. (240 g) |
$349.95
Recommended Accessories
| Part/Accessory | Article No. |
| Ear cushions | 517680 |
|
Spare earpads |
|
| Universal adapter | 077046 |
|
Universal Gold-plated 1/4" Adapter |
|
Glossary
| Attenuation (passive) |
| Reduction in ambient noise achieved by mechanical means, such as wearing headphones or ear defenders. |
| 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 (headphones) |
| The frequency response of a pair of headphones is given within limits defined by the manufacturer. |
| 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. |
| NoiseGard™ noise compensation |
| NoiseGard™ is an active noise compensation system which Sennheiser originally developed for use by pilots, who have to rely on good sound quality even in high-noise environments. NoiseGard™ actively compensates the noise, based on the physics principle of sound and counter-sound, which works as follows: tiny microphones pick up the low-frequency ambient noise in the vicinity of the user’s ear. Based on that noise interference, the NoiseGard™ electronic module calculates the required sound wave with 180° phase inversion. The unwanted noise and the phase-inversed sound wave meet directly at the user’s ear where they virtually cancel each other out. The result is an effective reduction in ambient noise. The music is transmitted in the same high quality, so that even quiet passages can be enjoyed in noisy environments. |
| 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%. |
| 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. |
