User manual SENNHEISER RS 140

[. . . ] KG µ CE µ . FCC Rules This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. [. . . ] Do not store your headphones on a glass dummy head, chair armrest, or similar for long periods of time as this can widen the headband and reduce the contact pressure of the headphones. Do not use abrasive cleaners. Wall mounting The transmitter is prepared for wall mounting. The required mounting hardware (screws and plugs) is not included in the delivery. 12 Connecting the transmitter (Fig. 1) Establish the necessary connections (mains unit, audio connecting cable). The ear cushions are secured to the earcups by means of a quarter turn fastener. To remove an ear cushion, turn it in the direction of the arrow until you overcome a slight resistance and lift it off the earcup. Inserting the rechargeable batteries (Fig. Attention: Observe correct polarity when inserting the batteries! Charging the rechargeable batteries For charging the batteries, place the headphones on the charging cradle of the transmitter. (The headphones automatically turn off during charging. ) The red LED "CHARGE" lights up during the charging process. If the batteries are fully charged, the transmitter automatically switches to trickle charging and the red LED "CHARGE" flashes slowly. Subsequent charging time is about the same time as the previous operating time. Always store the headphones on the transmitter to ensure that they are fully charged when they are needed. If you do not use the head-phones for extended periods of time, please remove the batteries and disconnect the transmitter's mains unit from the mains. Nearly discharged batteries will significantly reduce the sound quality. 10 minutes before the batteries are completely discharged, an acoustic warning signal is produced (two long beeps, see table on page 16). 13 ENGLISH Removing the ear cushions (Fig. This automatically activates the transmitter and the green LED "ON/OFF" lights up. If the sound source is turned off, the transmitter is automatically deactivated after approx. 3 minutes (the LED "ON/OFF" goes off). ENGLISH Note: The automatic level control only functions if the volume of the sound source is sufficient. Turning the headphones on and off (ON/OFF, Fig. 5) Move the "ON/OFF" switch on the headphones to the position "ON". The headphones then start the transmitter search-tuning. Adjusting the volume (VOLUME, Fig. 6) Use the "VOLUME" control to adjust the volume on the headphones. Adjusting the balance (BALANCE, Fig. 6) Use the "BALANCE" control to adjust the volume of the right and left channels. [. . . ] 8) The RS 140 system is equipped with a switchable dynamic compression system. This system reproduces soft passages louder and decreases loud sounds. To activate the dynamic compression system, move the slide switch "COMPRESSION" on the transmitter to the right. If the LED flashes slowly, gradually increase the volume of the sound source (see "Under-modulation"). Automatic noise reduction In addition, the transmitter features a "Noise Gate" function, which reduces hissing noise when no audio signal is transmitted (e. g. [. . . ]