User manual AUSTRALIAN MONITOR IS SERIES

[. . . ] IS SERIES 600W/1200W/1600W STEREO PRO AUDIO AMPLIFIERS INSTALLATION AND OPERATION MANUAL IMPORTANT SAFETY INFORMATION 1. Save the carton and packing material even if the equipment has arrived in good condition. Should you ever need to ship the unit, use only the original factory packing. 2. Do not spill water or other liquids into or on the unit, or operate the unit while standing in liquid. Make sure power outlets conform to the power requirements listed on the back of the unit. [. . . ] NOTE: Input signal ground is not to be used as a safety ground (earth). The input to your amplifier is a balanced 3-pin configuration and requires all three pins to be connected. When wiring for a balanced source, the connector going to the input of your amplifier should be wired as follows: Pin 1 = GROUND / SHIELD. When wiring for an unbalanced source you must ensure that pin 3 is connected to pin 1 (input ground), either by linking the pins in the input connector or by the source equipment's output wiring. When wiring for an unbalanced source: Pin 1 = GROUND/SHIELD Pin 2 = HOT (in phase with the amplifier's output), Pin 3 = GROUND/SHIELD (joins to pin 1). NOTE: In-line XLR connectors often have a termination lug that connects directly to the chassis of the connector. Do not link this lug to pin 1 at the amplifier s input as it will defeat the amplifier s input grounding scheme. This lug is often referred to as a "drain" and is used to provide a termination to the chassis for shielding purposes when a floating signal ground is required between the source and destination, or when disconnecting the signal ground is required to reduce earth loop noise, or noise induced into signal grounds from stray magnetic fields. OUTPUT WIRING When wiring to your speakers, always use the largest gauge wire your connector will accept. The longer the speaker lead, the greater the losses will be, resulting in reduced power and less damping at the load. We recommend using a heavy-duty, two core flex (four core flex if bi-amping) 10 to 12 gauge (2mm2 to 2. 5mm2 or 50/0. 25 or equivalent) as a minimum. PAGE 6 IS SERIES INSTALLATION & OPERATION MANUAL INSTALLATION BINDING POST OUTPUTS When terminating to the 4 mm binding post (banana jack) output connectors, banana plugs or bare wires can be used. The red terminal is positive and the black terminal is negative (ground). SPEAKER OUTPUTS When using the 4 pole speaker connector for speaker output, use only the mating 4 pole in-line connector. This connector is designed so that both speakers can be fed from a single connector. The "Channel A" speaker connector actually carries both channel A & Channel B outputs (see: Speaker Connector Wiring Diagrams). The "Channel B" speaker connector carries the Channel B output only. This arrangement allows you the option of connecting to the outputs separately or together. When you power up your IS Series, your amplifier goes through an initialising period before it will accept signal. The Inrush Current Suppression (ICS) circuit is in operation for the first 0. 5 seconds. This limits the mains current, to prevent "nuisance-tripping" of circuit breakers. During this period you will hear a couple of relays "click", indicating mains is now directly applied to the amplifier and the signal path is connected. While the ICS circuit operates there is also a 30dB mute on the signal input. [. . . ] a definitive connection to ground), you must disconnect the shield from the input connector s ground pin (Pin-1) and re-connect it to the "drain" contact on the input connector. This will ensure the shield on your input wiring actually goes to the amplifier chassis and subsequently to earth. You will defeat the amplifiers internal grounding scheme and possibly cause instability in the amplifier. Always ensure that your amplifier is off and the attenuators are down when you engage this switch. [. . . ]