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Owner’s Manual
o
N 433
Power
Amplifier
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Important Safety Instructions TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT WARNING EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE. CAUTION RISK OF ELECTRICAL SHOCK DO NOT OPEN CAUTION: TO REDUCE THE RISK OF ELECTRICAL SHOCK, DO NOT REMOVE COVER. NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL. The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated “dangerous voltage” within the pro
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Important Safety Instructions 9. NEVER attempt to repair this product. If a problem occurs, contact your Mark Levinson retailer. 10. NEVER expose this product to extremely high or low temperatures. 11. NEVER operate this product in an explosive atmosphere. 12. ALWAYS keep electrical equipment out of the reach of children. 13. ALWAYS unplug sensitive electronic equipment during lightning storms. 14. In CE countries, this amplifier is considered “professional equipment.” In order to comply with
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4 3 Oak Park “Mark Levinson” and the Mark Levinson logo are registered trademarks Bedford, MA 01730-1413 USA of Harman International Industries. U.S. patent numbers and other Telephone: 781-280-0300 worldwide patents issued and pending. Fax: 781-280-0490 www.marklevinson.com “Madrigal Audio Laboratories” and the Madrigal Audio Laboratories logo are registered trademarks of Harman International Industries. U.S. Customer Service patent numbers and other worldwide patents issued and pending.
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Nº433 Power Amplifier Table of Contents Unpacking ......................................................................................6 Product Registration ...................................................................6 Installation Considerations ............................................................7 Placement ..................................................................................7 Ventilation ............................................................................
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Mark Levinson Unpacking DO NOT attempt to lift or move the Nº433 without adequate Warning! assistance. Failure to follow the procedures included in this section may result in personal injuries and/or product damage. The Nº433 is a massive power amplifier. The Nº433 ships at 130.5 pounds (59.2kg). Rear panel handles are provided for safe, conve- nient lifting and moving. Proper lifting requires at least two people. DO NOT attempt to lift the Nº433 from its packing carton alone. Caution! DO NOT
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Nº433 Power Amplifier Installation Considerations The Nº433 requires special care during installation to ensure optimal performance. Pay particular attention to the precautions included in this section and to other precautions included throughout this owner’s manual. DO review “Important Safety Instructions” on page 2 and Placement “Power Requirements” on page 9 before installing the Nº433. DO place the Nº433 on a solid, flat, level surface such as a table, shelf, or floor OR bolt the N
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Mark Levinson DO NOT place the Nº433 on a thick rug or carpet or cover the Nº433 with a cloth, as this might prevent proper cooling. If the Nº433 is placed on the floor, use a thick piece of tempered glass to provide firm support and proper ventilation. DO NOT expose the Nº433 to high temperatures, humidity, steam, smoke, dampness or excessive dust. Avoid installing the Nº433 near radiators or other heat-producing appliances. In general, better ventilation is required if the top of the
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Nº433 Power Amplifier Power Requirements When shipped, the Nº433 is configured for 100V, 120V, 220V, 230V or 240V AC power operation at 50 or 60Hz based on the country for which it is manufactured. Before operating the Nº433, make sure the ~ac mains connector label indicates the correct operating voltage for the current location. Do not attempt to adjust the operating voltage. Consult an Caution! authorized Mark Levinson dealer if the operating voltage is incorrect or if the operating vol
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Mark Levinson power outage occurs. Power is not disconnected when the Nº433 is in standby or sleep mode. When power returns, the Nº433 will require a brief warm-up and break-in period (not the full 300 hours). It is recommended that you allow the Nº433 and other audio components to stabilize for a few minutes. The Nº433 has four operating states: Operating States 1. Off Power is disconnected from the ~ac mains connector. 2. Sleep Mode Power is connected to a small power supply, communicatio
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Nº433 Power Amplifier Special Design Features Thank you for purchasing the Nº433 Power Amplifier. While this amplifier is straightforward in everyday use, it includes several design features that are responsible for its outstanding performance. In particular, this amplifier defies the accepted wisdom that it is impossible to design a large, powerful amplifier that also has all the finesse of the finest smaller amplifiers. A few of the technical highlights that make this possible are descri
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Mark Levinson The Nº433 is designed to shut itself down if it senses any of a Extensive Protection number of fault conditions that could cause damage to itself or to associated loudspeakers. These fault conditions include: the presence of DC (direct current) at the output demand for excessive current at the output, indicating a short- circuit over-voltage or under-voltage conditions (+/-10%) at the ~ac mains connector unsafe operating temperatures in any of several critical areas wi
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Nº433 Power Amplifier Front Panel The numbers in the front-panel illustration shown below corre- spond with the numbered items that appear below. DUAL MONO AMPLIFIER Nº432 standby power 1 2 3 1. Indicator LED 13 Indicates the operating state of the Nº433 and provides diagnostic information when a fault condition occurs. LED Behavior Description Fully lit Amplifier is powered “on.” Slowly blinking Amplifier is in standby. Dimly lit Amplifier is in sleep mode. Not lit Amplifier is powered “off.”
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Mark Levinson 2. Power Button Powers the Nº433 on and off when the power cord is connected to the ~ac mains connector and an electrical outlet. When the Nº433 is powered on, pressing and releasing the power button disconnects power from the ~ac mains connector and powers the Nº433 off. When the Nº433 is powered off, pressing and releasing the power button connects power to the ~ac mains connector and powers the Nº433 on. If the power save mode switch is set to on, the Nº433 enters sleep mo
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Nº433 Power Amplifier Rear Panel The numbers in the rear-panel illustration shown below correspond with the numbered items that appear in the text below. 15 Never make or break connections to the Nº433 unless it and all Caution! associated components are powered off and disconnected from electrical outlets. Before making connections to the Nº433, make sure the associated preamplifier master volume is set to a reasonable level. 1. Rear Panel Handles Allow for safe, convenient lifting and mov
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Mark Levinson NEVER connect power-amplifier outputs to any component other Caution! than a loudspeaker. NEVER short circuit power-amplifier outputs NEVER connect power-amplifier outputs to another power amplifier’s outputs. For best performance, use high-quality loudspeaker cables. To connect these cables, use a high-quality spade or hook lug soldered or crimped to the cable with extremely high pressure. Connect the + (positive) binding posts on the Nº433 to positive inputs on the associa
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Nº433 Power Amplifier 4. Balanced Input Provides left, center and right-channel audio input. One XLR connector per channel is available to accept balanced input signals from an associated preamplifier. For best performance, use balanced connections whenever possible. Refer to the illustration below and to the associated preamplifier documentation to ensure that Nº433 XLR input pin assignments correspond to the associated preamplifier XLR output pin assign- ments. If not, wire the cable so
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Mark Levinson 7. trigger in and out connectors Provide DC trigger control. One 1/8-inch mini-jack labeled trigger in is available to receive 12 or 5V DC signals from a connected component, and one 1/8-inch mini-jack labeled trigger out is available to pass signals to a connected power amplifier. The illus- tration below shows tip polarity requirements. Connect the trigger in connector on the Nº433 to the trigger out connector on a compatible component. Toggling the connected component betw
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Nº433 Power Amplifier 9. ~ac mains connector Provides power to the Nº433 through the supplied power cord when the supplied power cord is connected to the ~ac mains connector and the electrical outlet. One IEC-standard AC mains receptacle labeled ~ac mains is available. Before operating the Nº433, make sure the ~ac mains connector Note label indicates the correct operating voltage for the current location. The Nº433 has been safety-tested and designed for operation Warning! with a three-cond
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Mark Levinson Linking Linking is available for all Mark Levinson components that offer Link or communication ports, including master, slave in, slave out, , input and output communication ports. These communication ports can be used to “link” compatible Mark Levinson components in a slave chain, allowing them to share Link controls. The Nº433 offers two communication ports labeled input and output. The input communication port can be connected to a compatible Mark Levinson preamplifier th
