User manual GEMINI X-04

[. . . ] POWER-CORD PROTECTION: Power-supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them, paying particular attention to cords at plugs, convenience receptacles, and the point where they exit from the product. OUTDOOR ANTENNA GROUNDING: If an outside antenna or cable system is connected to the product, be sure the antenna or cable system is grounded so as to provide some protection against voltage surges and built-up static charges. Article 810 of the National Electrical Code, ANSI/NFPA 70, provides information with regard to proper grounding of the mast and supporting structure, grounding of the lead-in wire to an antenna discharge unit, size of grounding conductors, location of antenna-discharge unit, connection to grounding electrodes, and requirements for the grounding electrode. LIGHTNING: For added protection for this product during a lightning storm, or when it is left unattended and unused for long periods of time, unplug it from the wall outlet and disconnect the antenna or cable system. [. . . ] If any strands of wire from one connector touch the adjacent connector, the sound will distort, and your amplifier will overheat and go into protection mode. State-of-the-art bi-polar output stage technology for the finest sound quality and reliability High output power to drive professional loudspeakers without clipping Comprehensive protection circuitry (Short Circuit, DC, Thermal Cut-off, Sub/Ultrasonic Frequency Filters, Turn-on Delay, Main Fuse, Secondary DC Fuses) Three modes of operation: stereo, parallel mono and mono bridge Ground lift switch for flexibility in installations Signal LED and Clip LED for better control on X-01, X-02, X-03 amplifers Large VU-meters and Clip LED for better control on X-04 amplifier Efficient dual aluminum extrusion heatsink design with directly mounted output transistors for no-fault operation Efficient air guide with front-to-rear airflow for thermal stability and reliability Compact 2U well balanced enclosure (3U for X-04 model) Steel reinforced chassis construction for durability and longevity 1/4" TRS & XLR balanced/unbalanced input connectors 1/4" as well as 3-way binding post speaker outputs ON/OFF: The ON/OFF (15) switch turns the unit on and off. POWER LED: The POWER LED (16) lights when the power is on. if the POWER LED (16) does not light , refer to the troubleshooting guide. PROTECT LED: When you first turn on the amplifier, the PROTECT LEDS (17) light briefly during a turn-on delay which indicates that the outputs are disconnected internally. There will be an audible click when the outputs reconnect and the PROTECT LED (17) will turn off. Otherwise, the PROTECT LED (17) indicates that there is a problem either in the amplifier's external connections, load or temperature conditions or its internal functions. If one of these situations occurs, the amplifier senses the problem and automatically switches into protection mode. The LED will light to warn you of the trouble and the amplifier will stop working. If this occurs, switch off the amplifier and refer to the TROUBLESHOOTING GUIDE. If the PROTECT LED (17) remains lit when resuming amplifier operation, do not use the amplifier and contact a GEMINI customer service representative. SIGNAL LED: The SIGNAL LED (18a) for each channel show when a signal is present. In MONO BRIDGE mode, both the CHANNEL 1 LED and the CHANNEL 2 LED will light in unison. Read all operating instructions before using this equipment. To reduce the risk of electrical shock, do not open the unit. there are NO USER REPLACEABLE PARTS INSIDE. Please contact the Gemini Service Department or your authorized dealer to speak to a qualified Gemini Sound Products technician. Be sure to allow adequate front and rear ventilation to avoid possible heat damage to your equipment. Be sure that AC power is OFF and all level controls are set to MINIMUM before making connections. This will eliminate any chance of unexpected, loud audio transients that could damage your speaker systems. Be sure that AC power is OFF when changing modes of operation and when changing the position of the Ground Lift Switch. Operators of electronic equipment should in no way be in contact with water. [. . . ] With the power OFF, connect your input cables to the CHANNEL 1 input only using the INPUT JACK, 1/4" (1) or XLR (3) of CHANNEL 1. If you try to operate at less than 4 Ohms per channel, the amplifier will go into the protection mode and stop operation until you correct the load conditions. 21) of both channels set to zero (fully counterclockwise), turn the POWER SWITCH (15) ON. With the level controls of your MIXER or other INPUT device turned all the way DOWN, turn the amplifier level controls all the way up for desired loudness from your speakers. [. . . ]