User manual BEYERDYNAMIC IMS 900

[. . . ] If you connect the unit to the wrong voltage, you may seriously damage it or suffer an electric shock. If sensible heat cannot escape, the unit can be damaged or inflammable material close to the unit can be ignited. Therefore, make sure the air can circulate freely through the ventilation grilles and keep inflammable material away. If you use defective or inappropriate accessories, the unit can be damaged. [. . . ] 7 Indication of Line Level The strength of the line level for each channel input is displayed by LEDs (4) and (5) on the left hand side next to the LC-Display. If the input signal strength exceeds 4, the red warning LED will glow. 8 How to adjust Transmitter Frequencies a) Press the up or down button until the LC-Display will show the preset frequency. 9 How to adjust Stereo or Mono a) Press the up or down button until the LC-Display will show STEREO/MONO ON/OFF. 10 How to adjust Names a) Press the up or down button until the LC-Display will show NAME. 11 How to set the Lock Function a) Press the up or down button until the LC-Display will show LOCK. No more settings can be made (except unlock) until the function is set to unlock. Input Sensitivity the up or down button until the LC-Display will show INPUT SENSITIVITY. The left button the input sensitivity is set to LOW, with the right button to HIGH. Important: Adjust the headphone level to suit your needs and do not overdrive the headphone. The system will save and update the current setting automatically within 5 seconds after the last adjustment if no other button has been pressed in the meantime. To mount the transmitter into a 19"-rack mount a FB 71 mounting bracket on the left and right hand side of the transmitter. Mount the connecting plates on the top and bottom of the two transmitters. After joining the two transmitters together, mount a FB 72 mounting bracket on the left and right hand side. Further features are the switchable stereo/mono audio output and the lightweight, rugged casing. On/Off switch and volume control for earphone Stereo mini jack for earphone Power indicator RF LED to indicate RF signal Balance control for right/left channel Casing Display to indicate the selected channel Channel selector button to select an interference-free channel Stereo/Mono switch to switch between Stereo or Mono audio output Limiter switch Squelch control to adjust the squelch level Antenna A and B. Push down the two snap locks on the right and left hand side of the battery compartment and open it. If you use conventional batteries, please use high-quality alkaline batteries. If you use rechargeable batteries, please use Ni-MH rechargeable batteries that are free from memory effect. If the battery voltage drops below 2 volts, the power indicator (3) is illuminated red to indicate the decreasing capacity. If you do not use the receiver for several weeks or months, please remove the batteries as they can leak after some time and damage parts of the receiver. â· Please do not throw used battery packs away with your household rubbish, but take them to your local collection points. [. . . ] 11 Balance Control With the balance control (5) you can adjust the volume balance of the earphone between the left and right channel. When turned clockwise, the volume of the right channel remains unchanged, while the volume of the left channel decreases. When turning anti-clockwise, the volume of the left channel remains unchanged, while the volume of the right channel decreases. For an evenly balanced volume level between the left and right channels, the control should be set to the centre position. [. . . ]