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This Class B digital apparatus complies with Canadian ICES-003. • Do not attempt to modify or fix this unit. Contact qualified YAMAHA service personnel when any service is needed. The cabinet should never be opened for any reasons.
• 500 W + 500 W max. (4 to 8 Ω) high-power, high-performance digital stereo power amplifier • 120 dB dynamic range • Yamaha-designed LSI chips used in the digital-modulation and power-drive circuits • Active Power Control System ensures optimum performance under any load •...
CONTROLS AND FUNCTIONS Front Panel Rear Panel This mark indicates a dangerous electrically live terminal. To reduce the risk of shock or fire and prevent short circuits, strictly follow the instructions on page 5 when connecting speakers.
1 STANDBY/ON switch/indicator This switch is used to set the MX-D1 to on or standby. A small amount of power is used in standby mode. When the MX-D1 is turned on, this indicator lights blue and the MX-D1 is ready for use.
CONNECTIONS • Pre-amplifier • PA equipment etc. • CD player with a volume control Unbalanced RCA output Balanced XLR output (U.S.A. and Canada models) To AC outlet Audio output Speaker (R) Speaker (L) When connecting the YPC-1 Be sure to attach the clamp filters to the power cable and the audio pin cable as illustrated below. 1.
Connecting Your Source Connecting Your Speakers Components Speaker cables typically consist of two insulated conductors. To ensure that the speakers are connected with Connecting to the BALANCE jacks the correct polarity (+/-), the insulation on one of the Connect your component with the balanced XLR conductors is a different color or is marked with a line.
BLOCK DIAGRAMS The MX-D1 is a high-power, high-performance PWM (Pulse Width Modulation) digital stereo power amplifier, utilizing Yamaha’s latest digital power amplifier and switching power supply technologies. The following block diagrams show the amplifier and power supply circuits. Amplifier Block Diagram 2.8 MHz...
With a conventional digital power amplifier, the output is adversely affected by fluctuations in power supply voltage as the current demands of the amplifier change. The MX-D1’s modulation circuit, consisting of a PLL (Phase Locked Loop) and modulation circuit, provides a radical solution to this problem.
If your MX-D1 does not appear to be working properly, look up the symptoms in the following table. If the symptoms persist, or are not listed, set the MX-D1 to standby mode, disconnect the AC power cable from the AC outlet, and then contact the nearest Yamaha dealer.
SPECIFICATIONS Minimum RMS output power Power supply (1 kHz, 1.0 % THD, 4 to 8 Ω) ....500 W + 500 W U.S.A and Canada models....AC 120 V, 60 Hz Australia model ........AC 240 V, 50 Hz Dynamic power (IHF) U.K.