Personal Audio
IE 7 - Sennheiser USA
Article No. 502173
Key Features
- Balanced & precise sound
- High-fidelity ear-canal phones
- High attenuation of ambient noise
- Ideal for professional monitoring
DJ Ear Headphones - Earbuds Noise Cancelling
$389.95
Related product
$389.95
General Description
The all-new IE 7 brings you intimately close to your music with critical detail, outstanding customized noise isolation and convenient accessories that enhance fit and portability. The IE 7 stores quickly and safely in the included carrying case.
What the experts are saying:
"These are serious earphones for serious listening." - Bill Henderson, iPhoneWorld
Features
- Lightning-quick transient rest/response times for precision detail
- Durable dynamic speaker systems with full, natural frequency response
- Up to 26 dB of noise reduction makes the IE7 travel friendly
- Perfect for any portable media systems as well as SACD, DVD-A and hi resolution formats
- Lo-Pro speaker housing delivers outstanding comfort
- Accessories included: cable clip, cleaning tool, dual flange and gummy ear adapters
- Built-tough with a 2 YEAR warranty
- Compatible (listen only) with latest generation of tablets
Delivery Includes
- 1 IE 7
- 1 set of ear adapters (S/M/L)
- 1 protective case
- 1 cleaning tool
- 1 cable clip
$389.95
Technical Data
| Attenuation (passive) | Up to 20 dB (90%) |
| Cable length | 3.9 ft. (1.2 m), symmetrical (earphone to separator: 1.3 ft./0.4m; separator to plug 2.6 ft./0.8 m) |
| Connector | 3.5 mm, angled |
| Ear coupling | In-the-ear |
| Frequency response | 10 Hz – 19 kHz |
| Impedance | 16 Ω |
| Sound pressure level (SPL) | 120 dB (1 kHz, 1 Vrms) |
| Total harmonic distortion (THD) | < 0.1% |
| Transducer principle | Dynamic |
| Weight | .18 oz. ( 5 g) |
| UPC | 615104134751 |
| EAN | 4044156023205 |
| Dimensions (single) | 4.1 x 6.3 x 2.5 inches |
| Weight (single) | 0.75 lbs |
| Dimensions (master) | 9.8 x 11.0 x 7.5 inches |
| Weight (master) | 7 lbs |
| Master Carton Qty | 6 |
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 |
| 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. |
| 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. |
