User manual AUSTRALIAN MONITOR AM2200 BROCHURE

[. . . ] Do not operate equipment on a surface or in an environment which may impede the normal flow of air around the unit, such as a bed, rug, weathersheet, carpet, or completely enclosed rack. If the unit is used in an extremely dusty or smoky environment, the unit should be periodically "blown free" of foreign matter. 2. Read all documentation before operating your equipment. Retain all documentation for future reference. 3. 4. Follow all instructions printed on unit chassis for proper operation. [. . . ] (It does not interrupt signal ground continuity on the strapping connector). The amplifier should be turned off before engaging this switch! Either a 20mm x 5mm fuse drawer is provided within the housing of the IEC mains connector (SY2200, SY2400) or the amplifier is fitted with a resettable circuit breaker (AM2200). Fuse: When you receive your amplifier it will have a working fuse and a spare fuse inside the fuse drawer. The drawer can only be opened once the mains lead is removed from the connector. The fuse is provided to protect both the mains and your amplifier as well as reduce the degree of damage if an internal fault exists. When replacing the fuse, replace with an anti-surge (slow blow) type of the current rating indicated on the back panel above the fuse holder. Warranty does not cover a blown fuse or any resulting damage due to the use of an incorrect fuse rating or type. Breaker: If the circuit breaker trips, allow 3 mins for the contacts to reset thermally before pushing the reset button to reset it mechanically. 14 Limiter Switch Pushing this switch in engages the clip limiter circuitry. The threshold level is referenced to the supply rail and the output voltage is sampled allowing true clip detection and limiting. 10 Binding Post Outputs Touch proof binding posts (banana jacks) are provided for speaker output termination with banana plugs or bare wire. The red post is used as positive and the black post is used as negative. For bridge connection, use only the red posts. 10a Speaker Output Connector A 4 pole speaker connector is provided as an additional speaker output. an earthed conductor which forms a barrier to the field). Electromagnetic radiation induces interference currents into system elements that mainly effect lower impedance paths. Radio transmitters or stray magnetic fields from mains transformers are often the cause of this problem. It is generally more difficult to eliminate this kind of interference, but again, moving the source away or providing a magnetic shield (i. e. Earth loops can arise from the interfacing of the various pieces of equipment and their connections to various safety earths. This is by far the most common cause of hum, and it occurs when source equipment and the amplifier are plugged into different points along the safety earth where the safety earth wiring has a current flowing through it. The current flowing through the wire produces a voltage drop due to the wire's resistance. This voltage difference between the amp earth and source equipment earth appears to the amplifier's input as a signal and is amplified as hum. There are three things you can do to avoid earth loop problems: Ensure the mains power for the audio system is "quiet" i. e. without equipment on it such as air-conditioning, refrigeration or lighting which may generate noise in the earth circuit. Ensure all equipment within the system shares a common ground/ safety earth point. [. . . ] After two seconds this mute will release, allowing any applied signal to pass un-attenuated. When switching the amplifier off, wait a couple of seconds before switching the amplifier on again. This allows the ICS circuit to reset. S Y N E R G Y 2 ­ O P E R AT I O N M A N U A L PA G E 9 MAINTENANCE Only competent or qualified persons should attempt any service or maintenance of your amplifier. Your Synergy-2 Series amplifier will need minimal maintenance. [. . . ]