La bande-son de votre voyage devient tout simplement plus riche et plus immersive. Le PXC 550 Wireless a été élaboré par le leader de l'audio qui depuis plus de 70 ans dicte continuellement les tendances de ce secteur : Sennheiser. Il n'y a donc aucun compromis en matière de son : profond, net, authentique et puissant quel que soit le volume. Avec ses performances d'une qualité exceptionnellement élevée, le PXC 550 Wireless donne vie à votre album ou film préféré.
Faites l'expérience du célèbre son Sennheiser dans un casque de voyage à hautes performances.
Le monde peut être bruyant. Avec le PXC 550 Wireless, vous pouvez tout simplement refermer la porte sur lui. Doté du système hybride de réduction active de bruit NoiseGard™ de Sennheiser, il crée votre propre espace auditif même dans le plus chaotique des environnements : plus le bruit est fort autour de vous, plus sa réduction est intense, vous offrant un confort d'écoute optimal. Et l'extraordinaire autonomie de la batterie du PXC 550 Wireless atteignant jusqu'à 30 heures* en utilisation continue, vous pouvez parcourir le globe sans quitter votre salon audio privé ni le recharger.
Pouvoir bouger librement profite aussi bien aux voyages qu'à la musique. C'est exactement ce que vous permet le PXC 550 Wireless. À la place d'un câble, il offre quelques-unes des meilleures solutions pour la transmission high-tech d'un son impeccable comme la liaison Bluetooth®, et grâce à la communication en champ proche NFC (Near Field Communication) avec l'appareil mobile correspondant, l'appairage du PXC 550 Wireless est tout aussi plaisant que l'écoute. Néanmoins, le PXC 550 Wireless peut aussi être utilisé avec le câble fourni.
Le PXC 550 Wireless offre une clarté vocale inégalée pour les appels personnels et professionnels. Identifiant et filtrant tous les bruits ambiants, il garantit que vous serez parfaitement compris par votre interlocuteur, quelle que soit l'animation autour de vous. Pour piloter votre centre de communication, les écouteurs sont équipés de pavés tactiles. Vous pouvez donc contrôler vos sons de manière à la fois naturelle et intuitive.
Le PXC 550 Wireless, un des casques légers les plus légers du marché, est prévu pour les très longues sessions d'écoute et dessiné pour une portabilité extrême. Afin de garantir le meilleur confort de port possible, nous avons mesuré des centaines d'oreilles et conçu en conséquence la taille globale de ce casque, la forme spéciale de ses coussinets et l'architecture de son arceau. La structure repliable à plat lui permet d'être discrètement rangé dans son étui de voyage, élégant et compact. Un confort supérieur et un design de pointe : le meilleur des deux mondes.
Intégrés aux écouteurs, ils vous donnent un contrôle total en déplacement, du réglage de volume au changement de piste en passant par la réponse à un appel – tout cela d'un balayage du doigt.
Le PXC 550 Wireless intègre un limiteur qui évite les crêtes de niveau sonore soudaines et extrêmes, par exemple lorsque vous êtes connecté à un système de divertissement en vol qui sert également aux annonces de l'équipage.
Le PXC 550 Wireless anticipe vos besoins de façon transparente en se mettant sous tension quand vous le dépliez, en mettant automatiquement votre piste en pause quand vous le retirez, et en s'éteignant lorsque vous le repliez.
Le PXC 550 Wireless est livré avec : câble à télécommande en ligne ; étui de transport ; câble USB ; adaptateur IFE ; guide de prise en main et de sécurité.
CIRCUMAURAL headphones (sometimes referred to as "Around Ear" headphones) encircle the ear creating a seal thereby effectively reducing ambient noise from getting to the ear. This is known as passive noise reduction.
This type of headphone is most effective in a high noise environment where it's necessary to eliminate as much of the environmental noise as possible for effective communication.
While the overall transmission range for wireless headphones is mostly determined by the wireless technology being utilized by the individual wireless headphone product there are multiple external factors (like obstacles, audio signal strength, wireless signal congestion, etc) that can effect the wireless signal transmission range of wireless headphones.
Obstacles are one of the main factors that can effect the transmission range of the wireless signal. While the wireless signal (with the exception of infrared signals) can pass through obstacles (like walls) ultimately range will be affected (likely reduced) by passing through these obstacles and the more dense the obstacle the greater the effect will be on the signal. For example a signal passing through a glass window won't be affected very much whereas a signal passing through a concrete wall will be effected much more greatly. Having a clear line of sight does provide the best transmission range.
The audio signal being output by your audio source to the transmitter of the headphones is another key factor in transmission range. A weaker audio signal going into the transmitter means the transmitter has a weaker signal to work with which can in turn reduce the transmission strength which ultimately affects range. Ensure that your audio source is outputting the best possible signal for the transmitter to use.
A2DP (Advanced Audio Distribution Profile) is a Bluetooth profile that defines how multimedia audio can be streamed from one device to another over a Bluetooth connection.
Most Sennheiser Bluetooth headphones utilize the A2DP profile as it allows for the best audio transmission over Bluetooth hence providing the best audio in the headphones.
NOTE: If the device you are connecting to does not support A2DP there may be connectivity issues between the Sennheiser unit and the device. In situations like this most Bluetooth Chipset manufacturers offer firmware updates to the Bluetooth chip to allow the A2DP profile to be utilized.
Noise cancelling headphones work by identifying the frequencies of noise outside the headphones and creating the exact opposite frequencies. The two sets of frequencies cancel each other out so the brain thinks that no noise is present.
As this happens there will always be a very low "white noise" effect. This low level "white noise" is considered to be silent because most people are used to having back ground noise present in everyday life so often don't even realize that this "white noise" is present. If your hearing is very attuned you may be more aware of this "white noise" however if audio is present in the headphones then the "white noise" is completely covered over and usually not detected by the human ear.
Please check out this video (http://www.youtube.com/watch?v=1EwkaRvIduw) which will show some of our Noise Cancelling models in action. The model shown may be different but the concept is the same.
NOTE: Noise cancelling is most effective for repetitive low level frequencies (like engine noise) but will not block higher level frequencies (like people talking) as much as these frequencies are needed to allow sound to work in the headphones.
Our Wireless Headphone Systems can be connected into virtually any audio device and it is just a matter of identifying the appropriate audio output port and then having the appropriate connecting plug or component.
The type of connector you have available will depend on the Sennheiser Wireless Headphone System that you choose. The type of audio output that you will have available to connect into will depend on the audio device you are connecting to.
Typical audio output ports include:
- 3.5mm headphone port
- red and white RCA audio output ports
- digital audio output (either optical or coaxial)
NOTE: In some instances an adapter or extra component will be needed to make the appropriate connection.
For example to change a 3.5mm headphone plug to an RCA connection you would use a female 3.5mm to male RCA adapter.
For example to change an analog connection (3.5mm headphone plug or red and white RCA plugs) to a digital connection (ie: optical) you would use a digital to analog decoder (like the OREI DA 34).
The wireless headphones that utilize a digital transmission signal operate in the unlicensed 2.4 Ghz range as do many other wireless devices (like WiFi routers, wireless printers, etc) and the headphones have a specific frequency range on which they can operate. The headphones scan the local wireless signal environment and then automatically select an unused frequency within their designated range. The headphones are designed to work in conjunction with other wireless devices without the different devices interfering with each other.
Typically the bandwidth of the WiFi router is greater than that of the headphones and it actually encompasses the bandwidth that the headphones want to use. Most of the time the two signals are away from each other and there is no issue. Occasionally if the WiFi router has established it's signal in the bandwidth that the headphones want to use then the two signals butt up against each other this can cause issues. Sometimes it is possible to change the WiFi router frequency manually by using a switch on the router itself.
In situations where the WiFi router cannot be changed manually the simple solution is to turn off the headphones and the WiFi router. Start the headphones and let them run for 15 minutes to establish their signal and then turn on the WiFi router. The WiFi router will "see" the signal of the headphones and establish it's own signal in a different part of the bandwidth and the two devices will work without interfering with each other. NOTE: Once this process has been done the signals are established and will remain established even with a device is turned off.
If the above solution does not resolve the issue it may be a situation where the wireless environment is too crowded and the multiple wireless signals keep butting up against each other and causing issues. To resolve this some wireless signals would need to be removed from the environment (ie: turned off). For example if a wireless printer was turned on it is creating wireless signal that would be part of the wireless signal congestion. If the printer is not used all the time then it could be turned off to reduce the congestion and allow the other wireless devices (like the headphones) to work.
An open (sometimes referred to as "open aire" headphone avoids adverse resonating effects in the earcup thus offering best possible sound reproduction with the utmost in transparency. The trade-off is that at extreme volumes some sound will leak out.
A closed headphone isolates you from your environment and vice-versa (ie: the sound is contained within the headphones). This is perfect for critical listening or a situation where you do not want to disturb/be disturbed. Our "closed" wireless headphone models include the MOMENTUM, PXC 550, HD 4.50/4.40 and Urbanite XL. A typical open headphone is the Sennheiser HD 600, 650 or 800.
With Sennheiser headphones the audio will always be accurate and responsive and is sure to please no matter what situation you need headphones for so it is personal preference as to whether "open" or "closed" headphones are used.
Flying can be particularly tiring, as passengers on board of a plane are often exposed to a continuous noise level of up to 80 dB/SPL. And on board of a train it can sometimes become loud as well. Sennheiser's patented NoiseGard™ technology makes travelling as relaxed as possible by letting you enjoy music in peace. The innovative NoiseGard™ /digital system now offers travelers a choice of three noise-cancelling profiles – optimized for the different types of surrounding noise encountered while travelling.
Active noise cancellation: the idea is based on the physical principle of noise and anti-noise, which was researched for the first time by the physicist Paul Lueg in the early 1930s. Put simply, an artificially generated sound field that is phase-inverted to the sound field of the noise has the effect of cancelling out the unwanted noise. Sennheiser’s NoiseGard™ technology works as follows: miniature microphones integrated into the headphones pick up the low-frequency noise close to the ears. Sophisticated electronic circuitry calculates a sound wave that is phase-inverted by 180 degrees to the unwanted noise. Directly at the ear, the noise and anti-noise cancel each other out almost completely. As a result, particularly annoying low-frequency noise is dramatically reduced.
Near-field communication (NFC) is a set of communication protocols that enable two electronic devices, one of which is usually a portable device such as a smartphone, to establish communication by bringing them within 4 cm (1.6 in) of each other.
NFC devices are used in contactless payment systems, similar to those used in credit cards and electronic ticket smartcards and allow mobile payment to replace/supplement these systems. NFC-enabled devices can act as electronic identity documents and keycards. NFC offers a low-speed connection with simple setup that can be used to bootstrap more capable wireless connections.
Sennheiser offers a range of wireless headset options that utilize a variety of audio transmission signals (including Radio Frequency and Digital Audio Signals) and both on ear and around the ear models to suit different wearing preferences.
These wireless headphone systems can be connected via a 3.5 mm plug into a dedicated headphone jack (which will often cut sound to the external speakers) OR to the RED & WHITE RCA audio output jacks (often found on the back of the TV, cable box, receiver, DVR, etc.) and when connected in this manner they will allow for operation of both the headphones and the external speakers. All models offer unique functions yet will be able to provide an excellent listening experience and personal preference will play a large part in selection.
Our range of wireless headphones can be seen on our website (http://en-us.sennheiser.com/wireless-tv-headphones).
We do NOT recommend Bluetooth headsets for applications like TV watching as the latency (time it takes for a Bluetooth signal to be transmitted) that is inherent to all Bluetooth devices causes the audio to be out of sync with the video.
* Up to 30 hours when connecting the headphones via cable and engaging noise cancellation. Around 20 hours when connecting the headphones via Bluetooth and engaging noise cancellation. The exact operating time is influenced by factors such as the audio and background noise volume.