User manual MACKIE AM4000 QUICK START

[. . . ] The signal at the TAPE OUT jacks is pre- EQ and Master VOLUME control. PRE OUT is an RCA jack that provides a line-level signal from the preamplifier stage. This provides a method for inserting an external signal processor into the signal chain prior to the amplifier stage, or branching off to another amplifier using a Y-cord. The Ushaped jumper wire should remain installed between the PRE OUT and MAIN IN jacks for normal operation. [. . . ] Output modes include 4 constant impedance and 25V, 50V, 70V, and 100V constant voltage. The smart output stage is fully protected against permanent damage caused by overloading, shorts, and extreme temperatures. The AM4000 Series operates on either 115VAC or 230 VAC, 50/60Hz, as determined by the Voltage Selector switch, and supplied by a detachable IEC power cord. Insulated terminals to connect a backup 24 VDC battery are provided on the rear panel. The front panel provides level controls for each Mic input and the selected Aux input, a Master volume control, and Low and High EQ controls. The control knobs can be removed for security, and their recessed shafts covered with the supplied inserts. LEDs indicate power, signal present at the output, peak, and output overload. 12 dB/octave Low and High shelving equalization with up to 12 dB of boost or cut at 100Hz and 10kHz can be applied to the output signal. Accessories include a rack mounting kit and an easily installed chime card. Never install, connect, or disconnect the unit with the power supply on. Before powering up the AM4000 Series integrated amplifier, make sure the voltage selector switch on the rear panel corresponds to the AC voltage applied. To ensure normal cooling of the AM4000 Series, make sure the unit is well-ventilated. Avoid exposure to direct sunlight or proximity to any heat source, dust, or dampness. If installed in an equipment rack, provide at least one rack space between each integrated amplifier. Safety First! Before connecting and using the equipment, please read this Quick-Start Guide carefully and keep it for future reference. This equipment has been designed to be installed by qualified professionals only!There are many factors to be considered when installing professional sound reinforcement systems, including mechanical and electrical considerations, as well as acoustic coverage and performance. Mackie Industrial strongly recommends that this equipment be installed only by a professional sound installer or contractor. CAUTION: To avoid the risk of electric shock, never allow this equipment to be exposed to rain or dampness. www. mackieindustrial. com 16220 Wood-Red Road NE, Woodinville, WA 98072 USA TEL 888. 337. 7404, FAX 425. 487. 4337, industrial@mackie. com UK +44. 1268. 571. 212, FAX +44. 1268. 570. 809 +industrial@rcf-uk. com ITALY +39. 0522. 354. 111, FAX +39. 0522. 926. 208 +industrial@rcf. it FRANCE +33. 3. 8546. 9160, FAX +33. 3. 8546. 9161 +rcf. commercial@wanadoo. fr GERMANY +49. 2572. 96042. 0, FAX +49. 2572. 96042. 10 +industrial@mackie. de Part No. AMPLIFIER OVERLOAD SIGNAL PEAK ON INPUT LEVELS INPUT 1 4 3 2 1 0 10 9 5 6 7 82 1 0 10 9 3 4 INPUT 2 5 6 7 82 1 0 10 9 3 4 INPUT 3 5 6 7 82 1 0 10 9 3 4 INPUT 4 5 6 7 82 1 0 10 9 3 4 AUX 5 6 7 8 1 AUX LOW 2 6 8 -10 +10 8 2 4 0 2 EQ HIGH 2 4 66 8 -10 +10 8 4 0 2 4 6 2 1 3 VOLUME 4 5 6 7 8 9 0 10 POWER Front Panel Features INPUT LEVELS knobs are used to adjust the volume of the sound sources connected to INPUTs 1-4 and AUX IN. To prevent the levels from being modified, the knobs can be removed and the holes can be covered using the supplied inserts. AUX selector is used to select the AUX IN signal that is routed to the output. LOW EQ is a shelving filter that provides 12 dB of boost and cut below 100Hz. [. . . ] Activation of the priority function can also be accomplished using the INPUT 1 PRIORITY terminal. Pin 3 Pin 2 IN PRIORITY GND INPUT 2 1 3 The INPUT 1 PRIORITY terminal activates the priority function for INPUT 1 by using an external normally-open switch to shortcircuit the INPUT 1 PRIORITY terminal to the GND (ground) terminal. When the INPUT 1 PRIORITY function is enabled, all other inputs are muted (no signal is transmitted to the outputs). An internal jumper changes the priority function so that the other inputs are attenuated rather than completely muted. Enabling the INPUT 1 PRIORITY function also enables the Vdc LED and Vdc 300mA outputs on the COMMANDS terminal strip. [. . . ]