User manual AKG PERCEPTION 820 TUBE

[. . . ] Please read the manual before using the equipment!The lightning flash with arrowpoint in an equilateral triangle means that there are dangerous voltages present within the unit. the exclamation point in an equilateral triangle on the equipment indicates that it is necessary for the user to refer to the User Manual. In the User Manual, this symbol marks instructions that the user must follow to ensure safe operation of the equipment. [. . . ] F AC input: Standard IEC power receptacle with integrated fuse holder. To avoid damage, always make sure that the power voltage selector is set to the same voltage as the power voltage available where you are going to use the unit. J GROUND LIFT: This pushbutton switch allows you to remove hum caused by ground loops. To avoid damage or electric shock, mount the microphone on a suitable stand and make all audio connections before connecting the Remote Control Unit to power. Use a standard balanced XLR cable (C) (optional) to connect the OUTPUT connector (D) on the Remote Control Unit rear panel to the desired microphone input on your mixer. Prior to connecting the Remote Control Unit to power, check what power voltage is available where you are going to use the microphone. Set the power voltage selector (G) on the rear panel to the correct position as shown in Table 1 below. Referring to Table 1 above, use the correct power cord to connect the Remote Control Unit to a grounded power outlet. When on tour, you may encounter power outlets that do not match the power plug on any of the supplied power cords. Purchase a suitable power cord locally that complies with IEC and local safety standards and has a power plug with a chassis ground pin. If in doubt about the power connection, consult a local electrician. After about ten seconds, the heating voltage will have reached the specified level and the front panel POWER LED will be lit. About twenty seconds later, the microphone will be ready to operate. You may not get the full splendor of the tube sound before the electrodes have reached the required operating temperature. Therefore, we recommend powering up at least PERCEPTION 820 TUBE Five minutes before starting to record. This will allow the tube inside the microphone to heat up properly, 3. Wait for five minutes to allow the tube to cool down to room temperature before moving the microphone. A hot tube will be more susceptible to mechanical damage than a cold one. It will add the typical warmth and richness tube microphones are famous for to female and male voices as well as many instruments. The following sections contain general hints on using the microphone and suggestions on how to place the microphone for voices and various instruments. Please remember that vacuum tubes with their heater filaments are more delicate than solid-state components. Even a drop from moderate height may cause the filament to break and the microphone to fail. [. . . ] 13: Miking an acoustic guitar with a single microphone. To minimize key noise, place the microphone a little ways to the side of the instrument. Aim the microphone at the middle of the instrument from a distance of about 2 to 3 1/2 feet (50 cm to 1 m). Aim a single PERCEPTION 820 TUBE or a stereo pair (see section 4. [. . . ]