Personal Audio
MM 450 - Sennheiser USA
Article No. 502891
Key Features
- Wireless freedom with Bluetooth 2.1®
- Invisible microphone for taking calls
- Converse w/ seatmates via TalkThrough
- NoiseGard 2.0™- up to 90% noise cancellation
Bluetooth Stereo Headset - Wireless Stereo Headset - Invisible Microphone
$449.95
Related product
$449.95
General Description
The MM 450 is the travel headset you have been waiting for.
With one headset, you can listen to music wired or wirelessly, take calls over Bluetooth, cancel 90% of ambient noise and chat with seatmates-- all without removing the headset.
With the MM 450 you can switch between calls and music -- delivered in superb stereo sound. NoiseGard 2.0 eliminates up to 90% of background noise for your most peaceful flight yet. A convenient TalkThrough function lets you carry a conversation with a seatmate at the push of a button.
The invisible high-performance microphone ensures that conversations are clear, making this headset the perfect all-in-one sound solution for the hottest digital device in your pocket.
Using a closed, on-the-ear design to block ambient noise, the MM 450 is an ideal companion for the frequent flier. Advanced DuoFol transducers provide the kind of detail and frequency response you would expect out of hi-fidelity audiophile speakers. The easy-to-use control panel is intuitive and simple enough to operate with your eyes closed-- a common way of enjoying Sennheiser's world-famous sound quality.
The MM 450 folds up for the ultimate in portability. The replaceable battery charges via USB or a wall adapter. For situations where Bluetooth is not permitted, you can use the included audio cable for a direct connection- making the MM 450 at home in any situation where a super quality headphone is required.
Features
- Sennheiser NoiseGard™ 2.0 technology provides up to 90% active noise cancellation
- TalkThrough function - Communication with seatmates without removing the headphones
- Wireless freedom with Stereo A2DP Bluetooth®-- hands-free convenience and hi-fi stereo sound
- Discrete, invisible microphone is always out of the way
- Direct cable option – listen as a wired headphone when Bluetooth is not permitted (note: mobile phone conversations require Bluetooth)
- iPhone/iPod/iPad compatible, compatible with all 1/8" (3.5mm) headphone plugs
- Easy-to-use controls are within optimum reach and provide concise "click" feedback
- World-famous Sennheiser acoustics from patented DuoFol transducer system
- Plush ear cushions seal out ambient noise while maintaining luxurious comfort for hours on-end.
- Collapsible headset stores in a compact footprint for convenient portability
- Replaceable battery charges via USB port or supplied wall adapter
- Connect everywhere – to mobiles, laptops, MP3 players, or in-flight entertainment systems with an all-in-one headset solution
- Built-tough with a 2-year international warranty
- -----
- The MM 450 is also available without a microphone for listening to music wirelessly with noise cancelling-- see the PXC 310 BT.
(click here) - *only the latest iOS supports full AVRCP. To add AVRCP to the iPhone you may use the BTD 300i or upgrade your iOS
- Due to the nature of Bluetooth technology, users may experience a slight audio latency when watching video on a portable device. The headphones are working fine. This is a characteristic of all Bluetooth headsets. Latency is not an issue for audio-only use, OR when using the included detachable headphone cable for a wired audio connection when watching video.
- Compatible with latest generation of tablets
Delivery Includes
- MM 450 headset
- Audio cable with in-flight adapter (3.5mm double mono adapter)
- USB cable
- Wall charging adapter
- Carrying case
$449.95
Technical Data
| Wearing style | On-the-ear |
| Transducer principle | Sealed (closed) |
| Technology | Bluetooth 2.1 + EDR / supported profiles: A2DP, HSP, HFP, AVCPR |
| Talk time | Up to 20 hours |
| Listening time | Up to 10 hours (without NoiseGard; with - up to 8) |
| Charging time | Approximately 3 hours |
| Standby time | Up to 200 hours |
| Range | Up to 33 feet |
| Weight | 3.8 ounces |
| Frequency response (headphones) | 15 - 22,000 Hz |
| Frequency response (microphone) | 100 – 10,000Hz |
| Total harmonic distortion (THD) | Less than 0.1% (typical at 1kHz) |
| Pick-up pattern | Omni directional |
| Sound pressure level (SPL) | 107dB (at 1mW, 1kHz) |
| NoiseGard™ noise compensation | Up to 90% |
| (*) | -------------- |
| UPC code | 615104170735 |
| EAN code | 4044155045642 |
| Dimensions (single) | 7.5 x 3.3 x 7.9 inches |
| Weight (single) | 1.9 pounds |
| Dimensions (master carton) | 18.5 x 17.7 x 9.3 |
| Weight (master carton) | 19.8 |
| Master carton quantity | 10 |
| Headphone connector | 1/8 inch (3.5mm) |
$449.95
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Bluetooth stereo audio transmitter dongle for PC and Mac USB ports. Draws power directly from the connected device. Enhances sound quality of Bluetooth transmission when paired with an Apt-X capable Sennheiser device. Also adds AVRCP support to music playback software. |
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Bluetooth stereo audio transmitter dongle for Apple 30 pin iPod/iPhone connector. Draws power directly from the connected device. Enhances sound quality of Bluetooth transmission when paired with an Apt-X capable Sennheiser device. Also adds AVRCP support to Apple devices. |
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Glossary
| Charging time |
| The time required to recharge a Sennheiser accupack. After recharging, automatic chargers will automatically switch to trickle charging. |
| Frequency response (headphones) |
| The frequency response of a pair of headphones is given within limits defined by the manufacturer. |
| Frequency response (microphone) |
| 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. |
| 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. |
| Pick-up pattern |
| Also known as polar pattern, directivity. According to their acoustic design, microphones differ in their sensitivity towards sound from different directions. Pressure microphones have a sensitivity that is largely independent of direction (omni-directional pick-up pattern). Pressure gradient microphones have the pick-up patterns wide cardioid, cardioid, super-cardioid or figure-of-eight. Interference microphones can be used to achieve a further concentration of the pick-up pattern (lobar pick-up pattern). As a special case, dummy head microphones achieve the pick-up pattern of the human ear/head (dummy head stereo). |
| Range |
| See RF wireless headphones, transmission loss. |
| 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. |
