Personal Audio
- Headphones
- Headsets
- Headphones for TV
- Microphones
RS 120 - Sennheiser USA
Article No. 009922
Key Features
- RF transmission through walls!
- Simplified charging by docking headphones
- Supports use of multiple headphone receivers
- Automatically activates when you turn on your audio source
Cordless Headphones - Wireless Stereo Sound
$99.95
Related product
$99.95
General Description
The lightweight RS 120 lets you enjoy freedom of movement without cumbersome cables. The headphones come complete with an easy-to-use recharging system. After use, simply place the headphones onto their convenient transmitter base station and they will automatically recharge for the next use. Its easy to set them up too! Just plug the transmitter in, and connect the audio cable to an analog output (RCA or headphone plug), its that simple.
The transmitter also features a convenient automatic on/off circuit: when you activate your audio source, the transmitter powers on without switches or buttons...easy! Five minutes after your turn off your audio source, the transmitter shuts off to conserve power.
The three position channel selector allows you to choose an interference-free channel for clear reception--- even through walls and ceilings.
Features
- Wireless freedom and stereo sound with reception through walls and ceilings up to 328 feet
- Simple, built-in recharging
- Detailed, warm sound reproduction with strong bass response
- Open-Aire design for hi-fidelity audio reproduction
- Volume, on/off and tuning control located on the headphone
- Very lightweight headphones are comfortable to wear for long periods of time
- Replaceable earpads for long service life
- Charging stand also stores the headphones when not in use
- Transmitter can be wall-mounted
- Supports the use of multiple headphones receiving the RF signal from one transmitter (use HDR 120)
- Delivery includes transmitter, power cable, audio cable and headphones
- Connects to RCA jacks (red and white outputs), 1/8" and 1/4" headphone sockets (anything with a headphone jack including laptop and desktop computers!)
- 3 selectable transmit-channels for avoiding interference and/or using more than 1 transmitter in a room
- (2) AAA NiMH rechargeable batteries included
- 2-year warranty
- Compatible with set-top DVD & Blu-Ray players, DVR's, satellite receivers, a/v receivers, laptops, mac/PC, MP3 players, LCD, Plasma and standard televisions that feature RCA outputs (red and white outputs) and/or 1/8" and 1/4" headphone sockets
Delivery Includes
- HDR 120 headphone
- TR 120 transmitter (audio cable is attached)
- Transmitter power cable (in a small white box- its there, trust us)
- (2) AAA NiMH rechargeable batteries
- RCA to 1/8" audio adapter
- 1/8" to 1/4" audio adapter
- Instructions for use
$99.95
Technical Data
| Frequency response (headphones) | 22 - 19,500 Hz |
| Jack plug | Dual RCA (analog) |
| Sound pressure level (SPL) | 106 dB |
| Modulation | FM Stereo |
| Operating time (Accupack) | Approx. 20-25 h. |
| Powering | 9V DC (transmitter); AAA batteries (receiver) |
| Range | Up to 328 ft (100 m.) |
| RF frequency range | (926-928 MHz, selectable) |
| Signal-to-noise-ratio | > 65 dBA |
| Total harmonic distortion (THD) | < 0.7 % |
| Transducer principle | Dynamic, open |
| Weight (receiver) | 8.1 oz. (230 g) (incl. batteries) |
| Weight (transmitter) | 7.1 oz. (200 g) |
| UPC code | 615104099227 |
| EAN code | |
| Dimensions (single) | 12.2 x 8.5 x 5.5 inches |
| Weight (single) | 3.0 lbs |
| Dimensions (master carton) | 28.3 x 18.1 x 13.2 inches |
| Weight (master carton) | 33.0 lbs |
| Master carton quantity | 10 |
$99.95
Recommended Accessories
| Part/Accessory | Article No. |
| Ear cushions | 510633 |
|
Ear cushion with foam disk, pr, for HDR110/120/115 |
|
| HDR 120 | 009931 |
|
Headphone, part of the RS120 wireless system, features "Open-Aire" supra-aural design |
|
| Power supply | 093776 |
|
Power supply, 120vac to 9vdc, 0.2A for RS110/120/130/140 |
|
Glossary
| Frequency response (headphones) |
| The frequency response of a pair of headphones is given within limits defined by the manufacturer. |
| Jack plug |
| A common audio connector in consumer electronics and music industry. Available in various diameters; in the hi-fi segment, 1/8" and ¼" are widely used. Poles range from one to four. (Examples: headphone jack or jack of an electric guitar). |
| Modulation |
| The process in which one wave is varied by some parameter of another wave, for example, an RF carrier frequency that is modulated by an audio signal. Types of modulation include amplitude modulation, frequency modulation, pulse code modulation and pulse width modulation. |
| Operating time (Accupack) |
| Indicates the operating time with a new, fully charged accupack. |
| Powering |
| Common description, where the electric power comes from. |
| Range |
| See RF wireless headphones, transmission loss. |
| RF frequency range |
| The range of frequencies to which a unit (e.g. a receiver) can be tuned. |
| 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. |
