User manual ROTEL RSS900

[. . . ] This symbol is to alert the user to important operating and maintenance (service) instructions in this manual and literature accompanying the product. When used in a high-quality music audio system, it will provide years of musical enjoyment. The RSS-900 answers the dilemma faced by many audiophiles who want the flexibility and convenience of a multi-speaker, multiroom system without having to sacrifice sound quality. [. . . ] The RSS-900 is designed for use with amplifiers that can produce as much as 200 watts per channel. Note: Turn off the power to all the components in the system before you make any signal connections. NOTE: If speakers that have a minimum impedance of less than 4 ohms are connected to the RSS-900 the impedance the amplifiers receives may be less than 4 ohms. If you are unsure about whether or not a certain combination of speakers can safely be used with the RSS-900 and your amplifier consult your authorized Rotel dealer. The polarity -- the positive/negative orientation -- for every connection between the amplifier and the RSS-900, and between the RSS-900 and the speakers, must be consistent so all the speakers will be in phase. if the polarity of one connection is mistakenly reversed , bass output will be very weak and stereo imaging degraded. The wire may have clear insulation with different color conductors (copper and silver). Place the RSS-900 on a firm flat surface where it will be free from excessive dust, heat or cold, moisture or high humidity, or exposure to direct sunlight. Do not allow any foreign objects to fall into the ventilation holes of the RSS-900. Like many audio components that handle high-level signals, the RSS-900 produces some heat during normal operation. Do not place anything on top of the RSS-900 or allow the vent holes in the top of the cabinet to be blocked. There should be at least 3" (75mm) of room above the RSS-900 to allow for heat dissipation. When making connections to the terminals of the amplifier, the RSS-900, or the speakers, twist these strands into a tight bundle and secure all the wires in the terminal. There must not be any loose strands of wire from one terminal that could touch the other. It is also very important to be sure that the left and right channels do not get reversed. Work carefully and be sure that the proper channels are connected at every amplifier, RSS-900 and speaker connection point. [. . . ] In rare instances a loose strand of speaker wire that is barely touching the other wire or terminal can cause an intermittent crackling noise. This is easy to check and eliminate as a possible source of the problem. If one or both channels is not producing sound, check to see if other speaker outputs are functioning properly. [. . . ]