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無線藍牙耳機

HD 4.40BT

新推出的Sennheiser HD4.40BT無線耳機提供了高質量的無線聲音信號,可用於日常生活中的各種環境使用。這款後腔封閉式包耳設計的無線耳機採用了藍牙4.0技術和aptX兼容技術,能夠傳輸真正的高保真聲音信號,並且具有令人滿意的動態低頻效果。它的外觀設計是由那些堅固耐用、高質量的材料製作完成的,能夠滿足都市生活使用的各種需求。
物品編號 506782

Sennheiser HD 4系列——讓日常聲音變得出色

你可以隨身攜帶。 ——多功能且充滿活力的全新HD 4系列通過一副耐用、封閉包耳式耳機中為你帶來完整的Sennheiser質量,從而滿足你的日常聆聽需求

為你的日常生活添加富有傳奇色彩的Sennheiser聲音,並讓音樂充實你的生活

HD 4.40 BT

對於音樂愛好者來說最大的變化就是移動式生活方式的出現。無線方式能夠滿足自由移動、便攜性、佩戴的舒適性。但是更重要的是:聲音質量是由Sennheiser的專利驅動單元提供的。

每時每刻都可盡情享受無線自由和完美的Sennheiser聲音品質

你正在聆聽最完美的聲音

HD4.40BT無線耳機能夠為你提供完美的聲音再現,而這一切都不是憑空而來。這款後腔封閉式設計的頭戴耳機採用了Sennheiser專利驅動單元,實現了聲音信號直接送達到你的耳朵之中。因此才能夠欣賞到這些完美平衡的、精美細節再現以及動感化的低頻呈現。

你正在聆聽最完美的聲音

不再受到線纜的束縛

HD 4.40 BT無線耳機可以讓你自由運動。因為它沒有線纜的束縛。同時這款採用無線核心技術和音頻編解碼技術的頭戴耳機能夠實現可靠穩定的無線傳輸以及無線方式高保真聲音質量。通過近場通信(NFC)技術保證了與兼容產品之間進行快速便捷的配對使用。

不再受到線纜的束縛

通過你的指尖完成所有的控制

想進行電話呼叫、曲目切換、音量調整嗎?使用固定於HD 4.40 BT無線耳機耳罩上的觸控式控制開關和集成式咪高峰就可以輕鬆自如的完成這些需求。快來試一試吧!

通過你的指尖完成所有的控制

不管在哪裡,佩戴都會讓你猶如置身於家中一樣舒適

HD 4.40 BT無線耳機隨著你到任何地方-同時讓你有彷如置身於家中的享受。包耳式設計以及厚實、人體工程學設計的耳墊非常適合長時間使用。堅固耐用的可折疊頭帶設計令它安全的存放於保護袋中。

不管在哪裡,佩戴都會讓你猶如置身於家中一樣舒適

純淨的外觀風格

高雅的外觀設計-使用堅固耐用高質量的材料製造:這就是HD 4.40 BT無線耳機的設計製造理念。它的弧形框架不僅具有極為舒適的佩戴性,而且也使之歷久彌新。

純淨的外觀風格

技術數據

  • 阻抗
    18 Ω
  • 頻率響應(話筒)
    100 - 10,000 Hz
  • 频率响应
    18 - 22,000 Hz
  • 声压级
    113dB (Passive: 1kHz/1Vrms)
  • THD,總諧波失真
    <0.5% (1kHz/100dB)
  • 拾音模式
    Dual omnidirectional microphones
  • 電池規格
    Li-ion Polymer Battery
  • 編解碼器
    AptX

FAQ

  • What does "Circumaural" mean?

    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.



    HD 4.40BT ( #506782 )
  • How do I get the best transmission range out of my wireless headphones?

    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.



    HD 4.40BT ( #506782 )
  • What is A2DP and what does it do?

    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.



    HD 4.40BT ( #506782 )
  • What is Apt-X and what does it do?

    The Apt-X refers to a built in codec that takes the available Bluetooth audio and enhances it so you have a superior sound. In order for the Apt-X codec to be utilized both the headphones and the device that they are connected to need to have the Apt-X codec built in.

    If the codec is not available in the device you are connected to the headphones will still work however you will not have the benefit of the Apt-X codec. If a device does not have the Apt-X codec built in you can purchase a device called a Bluetooth dongle with the Apt-X codec that will connect to your device and allow you to utilize the codec.

    NOTE: Apt-X will not affect Bluetooth connectivity with a device.



    HD 4.40BT ( #506782 )
  • How do I know if the wireless headphones will work on my audio device?

    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).



    HD 4.40BT ( #506782 )
  • What do I do when there is wireless signal (or WiFi) interference?

    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.



    HD 4.40BT ( #506782 )
  • What is the difference between "open" and "closed" ear cups?
    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.

    HD 4.40BT ( #506782 )
  • What means NFC™ Near Field Communication?

    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.



    HD 4.40BT ( #506782 )
  • What are the basic differences between the different wireless headphone models?
    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).

    HD 4.40BT ( #506782 )
  • Can I listen to a TV with Bluetooth headphones?
    We only recommend Bluetooth headphones for TV watching if the latency of the transmission is sufficiently low, e.g. when transmitter/audio source and headphone both support aptX Low Latency or similar.

    HD 4.40BT ( #506782 )

下載

  • Instruction Manual
  • 快速指南
  • 安全指南
  • EC Declaration of Conformity
    • EC Declaration of Conformity HD 4._series (120 KB) 下載