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Resumen del manual
3 ■ lllustrazione del pannello anteriore.................... 32 Thank you for purchasing the YAMAHA MX-50 stereo power amplifier. ABOUT THIS MANUAL To obtain the finest performance from your new power amplifier, please read this manual carefully, keeping it handy for future reference. After you know which PRECAUTIONS to take, the section CONNECTIONS will show you how to hook up the MX-50 to your control amplifier and speakers. Operation of this power amplifier is explained under FRONT PANEL CONTROLS AND THEIR FUNCTIONS. If you have any trouble, the final section on TROUBLESHOOTING tells you what to do before contacting your YAMAHA dealer. CONTENTS FEATURES....................................................................................... 1 PRECAUTIONS ................................................................................ 2 CONNECTIONS ................................................................................ 4 FRONT PANEL CONTROLS AND THEIR FUNCTIONS .....................5 TROUBLESHOOTING ......................................................................6 SPECIFICATIONS ............................................................................ 7 FEATURES ■ Hyperbolic Conversion Class A Circuit ■ High Dynamic Power ■ Two-Pair Speaker Support ■ LED Power Level Meters ■ Overload Protection Circuitry Hyperbolic Conversion Class A Circuit This new kind of circuitry, developed by Yamaha, eliminates the only serious drawback of previous Class A operation amplifiers. These had to switch to non-linear class AB operation above a certain load current, causing a slight deterioration in the otherwise excellent sound quality. The new Hyperbolic Conversion Class A circuit does away with this problem, allowing your Yamaha MX-50 to deliver pure class A operation constantly, without switching or cut-off, over its entire power range. IMPORTANT: Please record the serial number of your unit in the space below. Model: MX-50 Serial No.: PRECAUTIONS ___________OWNER’S MANUAL Keep this manual in a safe place for future reference. Avoid placing your MX-50 in direct sunlight or close to a source of heat. Also avoid locations in which the device is likely to be subjected to excessive dust, cold or moisture. __VEMTiLftTlQN_ The openings on the cabinet ensure the ventilation of the amplifier. If these openings are obstructed, the temperature inside the cabinet will rise rapidly and eventually damage the circuits. Therefore, avoid placing objects against these openings and do not install your amplifier in a place such that the flow of air through the ventilation openings could be impeded. HANDLING ■ Power cord When removing the power plug from the wall outlet, always pull directly on the plug. Never yank the cord as this may result in damage to the cord and possibly a short-circuit. If you do not intend to use this unit for an extended period of time, it is advisable to unplug the power cord. ■ Switches and knobs Avoid applying excessive force to the switches and knobs. ■ Relocation Before moving your amplifier, be sure to unplug the power cord and remove all other connecting cables. № CASE OF TROUBLE ■ Troubleshooting Chart Consult the Troubleshooting Chart for advice on the common operation errors before concluding that your amplifier is faulty. ■ Servicing Do not open the cabinet or attempt to make repairs by yourself, as this may aggravate the damage and expose you to an electrical shock. ■ Object and liquid entry See to itthatforeign objects or spilled liquids do not enter inside the cabinet. Should this case arise, consult your YAMAHA dealer. _CLEANKMG_ Wipe off dust with a dry soft cloth. To remove dirt or fingermarks, use a soft damp cloth then dry immediately with a clean cloth. Do not use alcohol, thinners or other chemical solvents since they may damage the finish or remove the panel lettering. Do not use any aerosol sprays near this unit as these products can easily get into the unit and damage the circuitry. LOCATION Special instructions for the U.K. THE WIRES IN THE MAINS LEAD ARE COLOURED IN ACCORDANCE WITH THE FOLLOWING CODE: Blue: NEUTRAL Brown: LIVE As the colours of the wires in the mains lead of this apparatus may not correspon with the coloured markings identifying th terminals in your plug, proceed as follow: The wire which is coloured BLUE must b connected to the terminal which is marke with the letter N or coloured BLACK. Th< wire which is coloured BROWN must be connected to the terminal which is marke with the letter L or coloured RED. CONNECTION DIAGRAM ANSCHLUBDIAGRAMM SCHEMA DI COLLEGAMENTO SCHEMA DES CONNEXIONS KOPPLINGSDIAGRAMMET O CONTROL AMPLIFIER AMPLIFICATEUR DE CONTROLE HAUPTVERSTÄRKER KONTROLLFÖRSTÄRKARE AMPLIFICATORE DI CONTROLLO PREOUT o I® © , MX-50 650WATTS ¡771 SOHz ~ >—I YAMAHA CORPORATION © © I © © © © Q @SPEAKERS A ENCEINTES A LAUTSPRECHERBOXENPAAR A HÖGTALARNAA SPEAKER A © -V©_y © O© © © © @0...