User manual ARCAM MZ12

[. . . ] 23425 MZ12 MZ8 MULTI ZONE POWER AMPLIFIER safety guidelines CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN ATTENTION RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR Class II product This equipment is a Class II or double insulated electrical appliance. It has been designed in such a way that it does not require a safety connection to electrical earth (`ground' in the U. S. ). CAUTION: To reduce the risk of electric shock, do not remove cover (or back). WARNING: To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture. The lightning flash with an arrowhead symbol within an equilateral triangle, is intended to alert the user to the presence of uninsulated `dangerous voltage' within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. [. . . ] 14 Zone numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Answer codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 System Command Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 It may be that the MZ amplifier has been installed and set up as part of your Hi-Fi or home cinema installation by a qualified Arcam dealer. In this case, you may wish to skip the sections of this handbook dealing with installation and setting up the unit. Use the Contents list to guide you to the relevant sections. ZONE STATUS 1 2 3 POWER ZONE STATUS 4 5 6 23425 MZ12 M U LT I Z O N E H I G H F I D E L I T Y P O W E R A M P L I F I E R 5 overview Placing the unit Place the amplifier on a level, firm surface, avoiding direct sunlight and sources of heat or damp. Alternatively, the unit can be installed in a 19" equipment rack using the rack ears supplied. Attach the rack ears to the sides of the MZ amplifier using the supplied bolts, as shown in the diagram below. · Do not place the MZ8/MZ12 on top of another power amplifier or other source of heat. · Do not place the amplifier in an enclosed space such as a bookcase or rack cabinet unless there is good provision for ventilation. If installed in a rack, leave at least 2U of empty rack space above and below the unit. · Do not place any other component or item directly on top of the amplifier as this may obstruct airflow around the heat-sink, causing the amplifier to run hot. (The unit placed on top of the amplifier would become hot, too. ) · Do not place your record deck on top of this unit. Record decks are very sensitive to the noise generated by mains power supplies which will be heard as a background `hum' if the record deck is too close. Standby power The front panel power switch powers all circuitry down. The unit may be put into low-power standby operation using RS232 control or the trigger input. In standby, the amplifier's control power supply is kept powered on, so the amplifier can be powered up remotely. If the unit is put into standby using the RS232 control or trigger input, it may be possible to hear a slight residual hum coming from the mains transformer inside the amplifier. However, if the unit is to be left unused for an extended period, we recommend that you disconnect it from the mains supply or turn off the power using the front panel switch to save power. Note that when the MZ amplifier is powered on from the front panel switch or bought out of standby the amplifier modules are turned on individually to stagger the surge created when a powerful amplifier is switched on (i. e. This reduces the surge current drawn from the domestic power supply. Interconnect Cables We recommend the use of high-quality screened cables that are designed for the particular application. Other cables will have different impedance characteristics that will degrade the performance of your system (for example, do not use cabling intended for video use to carry audio signals). It is good practice when connecting your equipment to make sure that the mains power-supply cabling is kept as far away as possible from your audio cables. [. . . ] The MZ8/MZ12 shall always respond to a received command, but may also send messages at other times. Each transmission by the RC is the following format: <St> <Zn> <Cc> <Dl> <Data> <Et> St (Start transmission): 0x21 `!' Zn (Zone number): see below. Cc (Command code): the code for the command Dl (Data length): the number of data items following this item, excluding the ETR Data: the parameters for the command Et (End transmission): 0x0D Each response by the MZ8/MZ12 is the following format: <St> <Zn> <Cc> <Ac> <Dl> <Data> <Et> St (Start transmission): 0x21 `!' Zn (Zone number): see below. Cc (Command code): the code for the command Ac (Answer code): see below. [. . . ]