Table of Contents
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Table of Contents
Related Manuals for Mark Levinson 431
Summary of Contents for Mark Levinson 431
- Page 1 Owner’ s Manual Nº432 Nº431...
- Page 2 WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE. CAUTION RISK OF ELECTRIC 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.
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Page 3: Important Safety Instructions
Important Safety Instructions Please read all instructions and precautions carefully and completely before operating your Mark Levinson power amplifier. 1. ALWAYS disconnect your entire system from the AC mains before connecting or disconnecting any cables, or when cleaning any component. 2. - Page 4 From all of us at Mark Levinson, thank you for choosing a Mark Levinson Power Amplifier. “Mark Levinson” and the Mark Levinson logo are registered trademarks of 3 Oak Park Harman International Industries. U.S. patent numbers and other worldwide Bedford, MA 01730-1413 USA patents issued and pending.
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Page 5: Table Of Contents
Dimensions, Nº432 .......31 Dimensions, Nº431 .......32 Rack-Mounting . -
Page 6: Unpacking
The Nº432/431 are massive power amplifiers. The Nº432 ships at 125 pounds (57kg) and the Nº431 ships at 105 pounds (48kg). Rear panel handles are provided for safe, convenient lifting and moving. Proper lifting requires at least two people. -
Page 7: Installation Considerations
• place the Nº432/431 on a solid, flat, level surface such as a table, shelf, or floor OR bolt the Nº432/431 into a rack- mounting system. Use a purpose-built rack-mounting system to accommodate the weight of the power amplifier. Refer to “Rack-Mounting”... -
Page 8: Ventilation
Nº432/431 on a thick rug or carpet or cover the Nº432/431 with a cloth, as this might prevent proper cooling. If the Nº432/431 is placed on the floor, use a thick piece of tempered glass to provide firm support and proper ventilation. -
Page 9: Warm-Up & Break-In Period
Important: Building regulations and electrical codes differ from location to location, making it impossible to anticipate the requirements of high-current AC circuits such as the Nº432/431 are capable of using. Contact a local, licensed electrician for information. Warm-up & Break-in Although the Nº432/431 delivers superior performance from the... -
Page 10: Operating States
For best performance, make sure power is connected to the ~ac mains connector at all times. During normal operation, do not use the power button to power off the Nº432/431. Instead, use the standby button to place the Nº432/431 into standby, which allows the power amplifier to remain warmed-up to deliver optimal performance at all times. -
Page 11: Special Design Features
Special Design Features Thank you for purchasing the Nº432/431 Power Amplifier. While these amplifiers are straightforward in everyday use, they include several design features that are responsible for their outstanding performance. In particular, these amplifiers defy the accepted wisdom that it is impossible to design a large, powerful amplifier that also has all the finesse of the finest smaller amplifiers. -
Page 12: Extensive Protection
Extensive Protection The Nº432/431 is designed to shut itself down if it senses any of a 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 •... -
Page 13: Front Panel
Front Panel The numbers in the front panel illustration shown above correspond with the numbered items that begin below. 1. Indicator LED Indicates the operating state of the Nº432/431 and provides diagnostic information when a fault condition occurs. LED Behavior Description... - Page 14 431 into sleep mode. When the Nº432/431 is in sleep mode, pressing and releasing the standby button takes the Nº432/ 431 out of sleep mode. If the power save mode switch is set to on, the Nº432/431 powers on into sleep mode. If the power save mode switch is set to off, the Nº432/431 enters...
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Page 15: Rear Panel
The numbers in the rear panel illustration shown above correspond with the numbered items that begin below. Caution! Never make or break connections to the Nº432/431 unless it and all associated components are powered off and disconnected from electrical outlets. Before making connections to the Nº432/ 431, make sure the associated preamplifier master volume is set to a reasonable level. - Page 16 If the associated preamplifier does not support balanced connections, connect the RCA output on the preamplifier to the RCA input on the Nº432/431. To reduce the chance of noise at the (otherwise un-terminated) inverting XLR input, insert the supplied U-shaped shorting-straps between pins 1 and 3.
- Page 17 Connector ground lug: chassis ground Note Before making balanced connections, remove the U-shaped shorting-straps between pins 1 and 3 on the Nº432/431 XLR inputs and save them for possible future use. These shorting- straps are installed when the Nº432/431 is shipped.
- Page 18 The illustration below shows tip polarity requirements. 5 to 12V, positive tip polarity Connect the trigger in connector on the Nº432/431 to the trigger out connector on a compatible component. Toggling the connected component between on and standby will toggle the Nº432/431 between on and standby or on and sleep...
- Page 19 Do not defeat the “third pin” or “earth ground” of the power cord. The Nº432/431 includes internal fuses as a final stage of protection. The protection circuitry is designed so that only a catastrophic failure will cause these fuses to blow. If this occurs, disconnect the power cord from the Nº432/431 ~ac...
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Page 20: Linking
Linking Linking is available for all Mark Levinson components that offer Link or communication ports, including master, slave in, input, and control communication slave out, ports. These communication ports can be used to “link” compatible Mark Levinson components in a slave chain, allowing them to share Link controls. -
Page 21: Constructing Link Communication Cables
All slave chains: • Must include compatible Mark Levinson components. The Nº432/431 is compatible with the components listed on the previous page. Refer to the appropriate documentation for Link compatibility information about other Mark Levinson components. - Page 22 • Must include components that are connected in a certain order to prevent communication from terminating. Power amplifiers such as the Nº432/431 must be the last components in a slave chain. Note The slave chains in this section include preamplifiers and power amplifiers.
- Page 23 Nº431 Power Amplifier Step C: Connect the control communicatio port on the second power amplifier to th input communication port on the third power amplifier.
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Page 24: Link Controls
Mark Levinson Customer Service at 781- 280-0300 or www.marklevinson.com. Link Controls Linking Mark Levinson components allows them to share certain controls. The table below provides a general description of controls the Nº432/431 shares with other linked components. Some controls may not be available for certain component combinations. -
Page 25: Troubleshooting
Refer all servicing to an authorized Mark Levinson dealer. 2. No audio and the front panel indicator LED is dimly lit. The Nº432/431 is in sleep mode. To take it out of sleep • mode, press and release the standby button. The Nº432/431 will power on or enter standby mode based on... - Page 26 3. No audio and the front panel indicator LED is blinking slowly. The Nº432/431 is in standby. To take it out of standby, • press and release the standby button. The Nº432/431 will power on. 4. No audio and the front panel indicator LED is blinking rapidly, remaining lit most of the time.
- Page 27 7. No audio and the front panel indicator LED is lit at full brightness. The Nº432/431 is powered on, but is not passing a signal. • Examine signal cables to ensure a solid connection between the Nº432/431 and the associated preamplifier and loudspeakers.
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Page 28: Care & Maintenance
• Use a soft, lint-free cloth to remove dirt and fingerprints from the Nº432/431 exterior surface. Do not use a cloth made with steel wool or metal polish. If needed, this cloth can be dampened with isopropyl alcohol. Do not dampen the cloth with Benzene, acetone-based cleaners, and other commercial cleaners. -
Page 29: Specifications
Voltage gain: • 2.83V output: 130 mV for both models Input sensitivity: • Full output: 2.58V for Nº432, 1.82V for Nº431 • 650W in on, 130W in standby, 10W in sleep Nº432 power consumption: • 375W in on, 100W in standby, 10W in sleep Nº431 power consumption:... -
Page 30: Declaration Of Conformity
Bedford, MA 01730-1413 USA The equipment identified here conforms to the Directive(s) and Standard(s) specified above. Type of Equipment: Power Amplifiers Models: Mark Levinson Nº432 and Nº431 Date: May 2004 Harman Specialty Group Vice President of Engineering 3 Oak Park... -
Page 31: Dimensions, Nº432
Dimensions, Nº432 17 .75" 45.09 cm 6.97" 17 .7 cm DUAL MONO AMPLIFIER Nº432 standby 7.65" 19.4 cm power 3.31" 8.4 cm 5.375" 13.7 cm 17 .5" 44.45 cm 5.25" 13.3 cm 18.5 " 47 cm 19.83" 50.37 cm RIGHT CHANNEL LEFT CHANNEL outputs outputs... -
Page 32: Dimensions, Nº431
Dimensions: Nº431 17 .75" 45.09 cm 5.22" 13.3 cm DUAL MONO AMPLIFIER Nº431 standby 5.91 " power 15 cm 3.31" 8.4 cm 5.375" 13.7 cm 17 .5" 44.45 cm 5.25" 13.3 cm 18.5 " 47 cm 19.83" 50.37 cm RIGHT CHANNEL... -
Page 33: Rack-Mounting
The drawing below will help you visualize the assembly. The mounted Nº432 amplifier and rack mount kit occupies four standard rack units of height. The Nº431 amplifier and rack kit takes up three standard rack units of height. -
Page 34: Notes
Notes... - Page 36 3 Oak Park, Bedford, MA, 01730-1413 USA | Telephone: 781-280-0300 | Fax: 781-280-0490 | www.marklevinson.com Customer Support: Telephone: 781-280-0300 | Sales Fax: 781-280-0495 | Service Fax: 781-280-0499 Product Shipments: 16 Progress Road, Billerica, MA 01821-5730 USA Part No. 070-630670 | Rev 4 | 05/04...