Personal Audio
A 200 - Sennheiser USA
Article No. 004455
Key Features
- Very easy to use
- Clear sound image
- Stereo personal sound amplifier
- Clear determination of the direction of the sound source
Stereo TV Listening - wireless Headphones - TV, Radio, Music -
$229.95
Related product
$229.95
General Description
The A 200 is a stereo personal sound amplifier for people who may sometimes need to rely on artificial assistance for their hearing. With stereo amplification via two integrated electret microphones, the user can clearly determine the direction of the sound source within an 8' to 10' radius. Dynamic headphone transducers ensure natural and transparent sound reproduction with optimum speech intelligibility. The A 200 features an auxiliary audio input for connecting an external microphone or infrared receiver.
Features
- Automatic limiter system
- Extremely easy to operate
- Adjustment of frequency response
- Integrated charger for storing and charging the A 200
- Keeps volume levels within a comfortable range
- Facilitates operation by anyone
- Allows customization to individual user
Delivery Includes
- A 200 personal sound amplifier
- BA 151 accupack
- L 200 charger for accupack
- Plug-in mains unit for L 200
- Spare set of ear-cushions (softer version)
- Set of sealing tape for adjusting the frequency response
$229.95
Technical Data
| Acoustics | Max. 35 dB |
| Ear coupling | Intraaural |
| Frequency response | 200 - 12,000 Hz |
| Sound pressure level (SPL) | 105 dB (1 kHz) |
| Operating time (receiver) | Up to 12 hrs |
| Transducer principle | Dynamic |
| Weight (receiver) | Approx. 1.8 oz. (51 g) (incl. Accu.) |
$229.95
Recommended Accessories
| Part/Accessory | Article No. |
| BA 151 | 004146 |
|
Rechargeable battery for IR and RF wireless headsets |
|
Glossary
| Acoustics |
| The science of sound. |
| 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. |
| Operating time (receiver) |
| Indicates the receiver’s operating time with a new, fully charged battery or accupack. |
| 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. |
