User manual AKG HT 40 PRO

[. . . ] Do not spill any liquids on the equipment and do not drop any objects through the ventilation slots in the equipment. The equipment may be opened, serviced, and repaired by authorized personnel only. Do not place the equipment near heat sources such as radiators, heating ducts, or amplifiers, etc. And do not expose it to direct sunlight, excessive dust, moisture, rain, mechanical vibrations, or shock. [. . . ] Receivers tuned to the same frequency band are marked with the same color. You can remove the color code clip on the HT 40 FLEXX and replace it with the supplied semitransparent clip. 7 Carrier frequency label: The label above the battery compartment indicates the name of the carrier frequency band and the three carrier frequencies of your transmitter. Pull the battery compartment lid (1) off the transmitter in the direction of the arrow. The transmitter will not function if you insert the battery the other way round. If the status LED) is lit red, the battery will be dead within about two hours. If you use a rechargeable battery, the LED will switch to red 15 minutes before the battery will be dead!To close the battery compartment, slide the battery compartment lid (1) onto the battery compartment from below to the point that the snap hook will engage. Since the HT 40 PRO handheld transmitter has been designed specifically for the integrated microphone element, there is no need to set gain on the handheld transmitter. Talk or sing into the microphone and set the levels on your mixer or amplifier referring to the appropriate instruction manual, or by ear. If you tune the transmitter and receiver to different frequencies, no signal will be transmitted!Talk or sing into the microphone, watching the AF LEDs on the receiver. If the OK LED flashes rarely and the CLIP LED will not flash at all, the transmitter input gain is too low. Pull the color code clip (1) off the transmitter case in the direction of the arrow. Slide the supplied semitransparent replacement clip onto the transmitter to the point that it snaps into place with an audible click. Move the transmitter around the area where you will use the system to check the area for "dead spots", i. , places where the field strength seems to drop and reception deteriorates. If you find any dead spots, try to eliminate them by repositioning the receiver. The RF OK LED on the receiver going out means no signal is being received or the squelch* is active. Switch the transmitter on, move closer to the receiver, or set the squelch threshold* to the point that the green RF OK LED will be lit. HT 40 FLEXX + SR 40 FLEXX: If the received signal is noisy, set the squelch threshold to a level where the noise will stop. HT 40 FLEXX + SR 40 FLEXX: Never set the squelch threshold any higher than absolutely necessary. [. . . ] In this case, it is often enough to move away from the microphone a little to stop the feedback. Ask your backing vocalists never to sing more than 35 degrees off the microphone axis. If the two vocalists were to sing into the microphone from a wider angle than 35 degrees, you may end up bringing up the fader of the microphone channel far enough to create a feedback problem. Use a soft cloth moistened with water to clean the surfaces of the HT 40 PRO and HT 40 FLEXX transmitters. [. . . ]