aviation headset, aviation boomset, jets, aircraft
General Description
These headphones are the ideal alternative to a boomset for all those who prefer to communicate using a hand-held microphone. It offers superb wearing comfort, as the dynamic open headphones, weighing in at only 140 grams, are hardly noticeable.
The HD 46 incorporates peak level protection. It delivers reliable protection from excessive volume peaks of more than 110 dB during radio communication.
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
- Single-sided cable, length 1.85 m, easy to exchange
- Volume peaks above 110 dB are eliminated
- ETSO approval C57a/TSO approval C139
Delivery Includes
- Headphones HD 46-K
- Cable clip
- User manual
- EASA Form 1
aviation headset, aviation boomset, jets, aircraft
Technical Data
| Transducer principle (headphones) |
dynamic |
| Ear coupling |
supra-aural, open |
| Frequency response (headphones) |
20 - 14,000 Hz |
| Impedance |
600Ω |
| Characteristic SPL |
93 dB SPL (1 kHz, 1 mW) - 95 dB SPL (1 kHz, 1 V) |
| Total harmonic distortion (THD) |
< 1 % at 110 dB SPL (300 - 3,000 Hz) |
| Contact pressure |
approx. 3N |
| Connection cable |
single-sided round cable, length 1.85 m |
| Connector |
6.3 mm jack |
| Weight w/o cable |
approx. 4.7 oz (140 g) |
| Operating temperature |
-10 °C .. +55 °C |
| Storage temperature |
-55 °C .. +70 °C |
aviation headset, aviation boomset, jets, aircraft
Recommended Accessories
| Part/Accessory |
Article No. |
| Cable-K1 |
500970 |
Cable with 6.3 mm jack connector
|
| Cable-N |
500834 |
Connection cable with 8-pin Neutricon connector
|
| Ear cushions |
515295 |
Ear pads (1 pair) HME46/HMEC46
|
| Ear pads |
515296 |
100 pieces
|
| Headband cushion |
515629 |
Headband padding (1 pair) 46 and 26 series
|
| HZC 08 |
525787 |
Cable Clip
|
aviation headset, aviation boomset, jets, aircraft
Variants
| HD 46 P/N 046-69 |
Article #500899 |
| Headphones without cable |
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 (headphones) |
| The frequency response of a pair of headphones is given within limits defined by the manufacturer. |
| 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. |
| Storage temperature |
| Gives the range of temperatures at which a unit can be stored without damage. |
