Personal Audio
MM 70 i - Sennheiser USA
Article No. 504161
Key Features
- In-line smart remote
- Sennheiser sound quality
- Isolates against ambient noise
- Includes a mic for Apple products
Mobile Phone Stereo Headsets - iPhone™ Headset - iPad™ Headset - iPod™ Headset -
$99.95
Related product
$99.95
General Description
The MM 70 i headset is tailor made for the iPhone and iPod. Thanks to Sennheiser’s expertise as a global leader in electro acoustics, the headset reproduces outstanding, professional quality stereo acoustics for optimum listening and communication enjoyment.
*iPod and iPhone are registered brands of Apple Computer, Inc. in the USA and other countries.
Features
- Microphone with remote to answer and end calls, adjust the volume, control music and record memos on the iPhone
- Good noise suppression
- Dynamic speaker features full, rich bass response
- Optimized for latest generation of iPhone, iPad, iPod and MacBook series
- 2-year warranty
Delivery Includes
- MM 70 i headset
- (3) pairs of standard ear sleeves (S/M/L)
- (3) pairs of lamella ear sleeves (S/M/L)
- Storage pouch
- Cable winder
- Cable clip
- User guide
$99.95
Technical Data
| Frequency response | 17-22,000 Hz |
| Sound pressure level (SPL) | 106 dB |
| Impedance | 16 Ω |
| Total harmonic distortion (THD) | < 0.5% |
| Connector | 1/8 in (3.5 mm), straight |
| Cable length | 4.6 ft (1.4 m) |
| Frequency response (microphone) | 80 - 15,000 Hz |
| Pick-up pattern | Omni-directional |
| Sensitivity (microphone) | -40 dBV/Pa |
| Weight | 0.45 oz (13 g) |
| UPC code | 615104186286 |
| EAN code | 4044155054996 |
| Dimensions (single) | 3.2 x 2 x 7.9 in |
| Weight (single) | 3.9 oz |
| Dimensions (master carton) | 15.7 x 14.5 x 9.9 in |
| Weight (master carton) | 10.7 lbs |
| 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. |
| 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. |
| 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. |
| 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. |
| 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). |
| 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%. |
