User manual AUDIO ANALOGUE MAESTRO DUECENTO INTEGRATED AMPLIFIER REV 1.2A

[. . . ] Not respecting the instructions contained in this manual will invalidate the guarantee terms and conditions. NECESSARY PRECAUTIONS FOR SAFETY AND MAINTENANCE ATTENTION: Read the following instructions and precaution carefully and completely before. operating or manteining your Audio Analogue MAESTRO DUECENTO integrated amplifier. It's mandatory to comply with the following regulations to avoid any hazard: Always disconnect your entire system from AC mains before connecting or disconnecting any cables. [. . . ] The preamplifier input stage hosts two low noise bipolar transistor (MPSA18). The internal stages are DC coupled and the offset is reduced by means of an integrating amplifiers. The input attenuator is realized with two cascaded integrated resistance network without output buffer. The protection and control sections are galvanically insulated from the analog sections to minimize the digital noise. The voltage of both channel is measured by means of optocoupler to avoid any ground loop. the DC offset on the output (loudspeakers) is also monitored by means of optocouplers. The protections are realized with a PLD (Programmable Logic Device); it's faster and more reliable compared to a microcontroller. FUSE: If necessary, replace it with an other of the same kind (see back panel label). When deactivated the volume level is increased, in some seconds, to the level set before the muting IN+/IN-. If one of the items listed above is missing, please contact your Audio Analogue retailer. After extracting the smallest items from the package, pull out the unit carefully. Where to place the MAESTRO DUECENTO integrated amplifier MAESTRO DUECENTO is a high power unit. After some hours of high volume operation the unit temperature can raise up to 45-50°C, be carefull!In particular, you should leave at least 5 cm around and above the unit and avoid placing it close to heat sources (radiators, heaters, amplifiers, television sets). Plugging and connecting Before connecting the MAESTRO DUECENTO integrated amplifier to the sources, please be sure that they're all unplugged from wall outlets. First of all, connect the sources to the MAESTRO DUECENTO inputs you want to use. as the second step , connect MAESTRO DUECENTO outputs to the speakers' cable. At last, plug the power cord into the MAESTRO DUECENTO inlet and into the wall outlet. To put the amplifier in stand-by you MUST place the rear panel switch in position 1. Powering up MAESTRO DUECENTO When you set the rear switch of MAESTRO DUECENTO in the position "1", the unit turns on in the STANDBY mode. When the front button is kept pressed for at least three seconds or when the "STBY" button on the remote control is pressed, the amplifier turns on. During power up the protection circuit check the status of the power lines and the absence of a DC voltage on the speaker outputs; the central display indicate "POWERING . [. . . ] Troubleshooting Symptom Display off No sound Cause Power cord incorrectly plugged Burned-out fuses Remedy Make sure the power cord is correctly plugged into the wall outlet Check fuses in the fuse panel (after unplugging the power cord from the wall outlet) above the IEC inlet and replace them with new ones of the same type Set the switch to "1" Turn off the rear switch, wait 5 seconds than turn ON again. Contact your Audio Analogue retailer Select the right source using the recording selector Place/replace battery (2 `AAA' batteries) Get closer to the unit or reduce angle Rear switch not turned ON Momentary low voltage on mains plug Internal Failure No battery/ worn-out battery You're standing too far or on an exceeding angle from the front panel If the suggested remedies should not work or the problem is not shown in the list above, please contact your local Audio Analogue retailer. INFORMATION ON DISPOSAL FOR USERS (PRIVATE HOUSEHOLDS) 1 In The European Union Attention: If you want to dispose of this equipment, please do not use the ordinary dust bin. Used electrical and electronic equipment must be treated separately and in accordance with legislation that requires proper treatment, recovery and recycling of used electrical and electronic equipment. [. . . ]