aviation headset, aviation boomset, jets, aircraft
General Description
The HMEC 46 successfully combines proven functionality with the latest audio technology and maximum user comfort. The HME 46 incorporates Sennheiser's Peak Level Protection technology, which delivers reliable protection from excessive volume peaks of more than 110 dB during radio communication. The new boomsets are available with all common plug configurations.
Features
- Extemely light weight
- Superb wearing comfort due to patended two-piece automatic headband and soft ear pads
- Flip-away headphone allows single-sided listening
- Flexible microphone boom, can be worn on either left or right-hand side
- Noise-compensated condensor microphone ensures excellent speech transmission
- Single-sided cable, length 1.85 m, easy to exchange
- With volume control
- Volume peaks above 110 dB are eliminated
- ETSO C57a and C58a approval/TSO-C139 approval
Delivery Includes
- HME 46 headset
- Carrying bag for headset
- Cable clip
- Wind and pop screen
- User manual
- EASA Form 1
aviation headset, aviation boomset, jets, aircraft
Technical Data
| Characteristic SPL |
93 dB SPL (1 kHz, 1 mW) / 95 dB SPL (1 kHz, 1V) (according RTCA/DO-214) |
| Connection cable |
Single-sided round cable, length 6.1 ft. (1.85 m) |
| Connector |
6.3 mm jack - headphones, PJ-068 - microphone |
| Contact pressure |
Approx. 3 N |
| Ear coupling |
On-the-ear, open |
| Frequency response |
350 - 6,000 Hz |
| Impedance |
Active/passive 600 Ω |
| Operating temperature |
-15 °C... +55 °C |
| Operating voltage (stand alone) |
8 - 16 V DC - according RTCA/DO-214 |
| Output voltage |
Typ. 400 mV at 114 dB SPL / 40 mV/Pa adjustable from 17 to 100 mV/Pa |
| Storage temperature |
-55 °C... +70 °C |
| Total harmonic distortion (THD) |
1 % at 110 dB SPL (300 - 3,000Hz) |
| Transducer principle |
Dynamic |
| Transducer principle |
Electret condenser with noise compensation MKE 46 |
| Weight w/o cable |
Approx. 5.3 oz (150 g) |
aviation headset, aviation boomset, jets, aircraft
Recommended Accessories
| Part/Accessory |
Article No. |
| Cable-C |
500840 |
Connection cable with XLR-5 connector
|
| Cable-K |
500841 |
Connection cable with jack plugs
|
| Cable-N |
500834 |
Connection cable with 8-pin Neutricon connector
|
| Cable-V-K |
500847 |
Connection cable with jack plugs and volume control
|
aviation headset, aviation boomset, jets, aircraft
Variants
| HME 46-V-K |
|
Model #500465 |
MSRP: $486.00 |
| Boomset with cable and volume control. |
| HME 46-C |
|
Model #500464 |
MSRP: $425.00 |
| Same as HME 46-K, but with XLR-5 connector |
Glossary
| Connection cable |
| When one speaks about headphones, the emphasis is on such things as sound quality and frequency response. There is rarely any mention of the connection cable. Most Sennheiser headphones are fitted with an OFC (oxygen-free copper) cable. This ensures linear and low-loss transmission in the broad frequency spectrum of the headphones. Many Sennheiser headphones also have detachable cables, which make it very easy to replace them. |
| Connector |
| A standardised single or multi-pole plug for connecting units or accessories. |
| Contact pressure |
| The wearing comfort of a set of headphones is determined not only by its weight but also by the force with which the earpieces are pressed onto the ears. This force is given in newtons (N), whereby 1 N corresponds to the compressive force which a mass of about 100 g exerts on a solid surface. The DIN Standard 45500 Part 10 limits the maximum permissible contact force to 5 N. Values of between 1.3 and 4 N are common, although lower values apply for open headphones. Higher values can be found in the case of closed headphones. Here, a higher contact pressure is required in order to achieve sufficient sealing, which is important for the reproduction of low frequencies. |
| 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. |
| Operating temperature |
| Gives the range of temperatures at which a unit can be operated without damage. |
| Operating voltage (stand alone) |
| Voltage type and level required for powering a unit. |
| Output voltage |
| The (signal) voltage which a unit supplies at its output. |
| Storage temperature |
| Gives the range of temperatures at which a unit can be stored without damage. |
| 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. |
| 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. |
