Personal Audio
HD 65 TV - Sennheiser USA
Article No. 504685
Key Features
- 2 Year warranty
- Inline volume/balance control
- Closed circumaural design blocks outside noise
- High-quality leatherette earpads: For outstanding wearing comfort
TV Headphones - Television Listening System
$89.95
Related product
$89.95
General Description
Closed dynamic headphones with 17' cable to attach to a TV or other audio source. Cable includes in-line volume and balance control.
Features
- Closed, dynamic TV headphones with independent volume control
- Neodymium magnets and lightweight diaphragms: For excellent speech intelligibility and powerful sound reproduction
- Closed circumaural design: Blocks outside noise
- High-quality leatherette earpads: For outstanding wearing comfort
- Independent volume control: Separate level setting of left and right channels
- Excellent connectivity: 6.3 mm stereo adapter included
- 2-year warranty
Delivery Includes
- HD 65 TV headphones
- 6.3mm adaptor plug
- HZR 62 cable with integrated volume control
$89.95
Technical Data
| UPC code | 615104190245 |
| EAN code | 4044155057935 |
| Dimensions (single) | 9.05 x 7.08 x 3.15 in |
| Weight (single) | 0.6 lbs |
| Dimensions (master carton) | 13.4 x 9.45 x 8.5 in |
| Weight (master carton) | 4.74 lbs |
| Master carton quantity | 6 |
| Transducer principle | Dynamic, closed |
| Ear coupling | Supraaural |
| Frequency response | 25 - 20000 Hz |
| Impedance | 32 Ω |
| Sound pressure level (SPL) | 112 dB (1kHz/1Vrms) |
| Cable length | 0.8m + 5.2m |
| Connector | 3.5 / 6.3 mm straight |
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. |
| 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. |
| 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. |
