No320S Owner's Manual - Mark Levinson

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Introduction<strong>Mark</strong> <strong>Levinson</strong>DocumentationConventionsThis document contains general safety, installation, and operationinstructions for the Nº 320S Preamplifier. It is important to readthis document before attempting to use this product. Pay particularattention to safety instructions.Appears on the component to indicate thepresence of uninsulated, dangerous voltagesinside the enclosure – voltages that may besufficient to constitute a risk of shock.Appears on the component to indicateimportant operation and maintenanceinstructions included in the accompanyingdocumentation.ivAppears on the component to indicatecompliance of with the EMC (ElectromagneticCompatibility) and LVD (Low-voltageDirective) standards of the EuropeanCommunity.WARNINGCAUTIONNoteCalls attention to a procedure, practice,condition, or the like that, if not correctlyperformed or adhered to, could result inpersonal injuries or death.Calls attention to a procedure, practice,condition, or the like that, if not correctlyperformed or adhered to, could result indamage or destruction to part or all of thecomponent.Calls attention to information that isessential to highlight.
1Getting StartedSpecial Design FeaturesThank you for purchasing the Nº 320S Preamplifier. A directdescendant of the Nº 32 Reference Preamplifier, the Nº 320Sfeatures audio circuits, controls, architecture, and optional phonomodules based on the critically acclaimed Nº32. In fact, someaudio circuits, such as the proprietary discrete volume attenuators,are identical to those found in the Nº 32.With a single-chassis design, the Nº 320S achieves separation of audiocircuit, control circuit, and power supply sections similar to that ofthe dual-chassis Nº 32. The internal structure of the Nº 320S separatesthese sections, while a steel shield box protects the power supplyand other circuits against electrostatic and magnetic interference.Filtered AC power is routed outside audio circuit sections, providingaudio circuits with the quiet, shielded environment essential forsuperior sound.Like most high-performance audio components, the Nº 320S relieson clean, noise-free AC power to deliver maximum performance.Unfortunately, most AC power does not meet these standards.Common household appliances such as refrigerators, TVs, andcomputers often contaminate AC power lines with line noise,spikes, and other irregularities that make it difficult for audiocircuits to perform up to their full potential.1-1To compensate for this, the Nº 320S offers a series of highly effectivenoise suppression and isolation techniques that begin filtering ACpower for noise as soon as it enters the chassis. Audio and controlcircuit sections use independent power supplies, each with its ownlow-noise toroidal transformer. The audio circuit power transformerincludes a Faraday shield between the AC power line and lowvoltagesecondaries for improved isolation.In addition, the Nº 320S uses two active voltage regulation stagesfor audio circuit sections. A high-power stage absorbs line-voltageand temperature variations, while a second high-performancestage provides local, high-speed, low-noise power for audiocircuits.(continued)
Page 2 and 3: Important Safety InstructionsRead a
Page 4 and 5: IntroductionMark LevinsonTable of C
Page 8 and 9: Getting StartedMark LevinsonSpecial
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Page 12 and 13: Getting StartedMark LevinsonPlaceme
Page 14 and 15: Getting StartedMark LevinsonWarm-Up
Page 16 and 17: Getting StartedMark LevinsonQuick S
Page 18 and 19: Basic OperationMark LevinsonFront P
Page 20 and 21: Basic OperationMark LevinsonFront P
Page 22 and 23: Basic OperationMark LevinsonRear Pa
Page 24 and 25: Basic OperationMark LevinsonRear Pa
Page 26 and 27: Basic OperationMark LevinsonMaking
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Page 31 and 32: Nº 320S Basic OperationNoteThe Nº
Page 33 and 34: Nº 320S Basic Operation4. enter bu
Page 35 and 36: Nº 320S Basic OperationThe Mute pa
Page 37 and 38: Setup MenuMark LevinsonNavigating t
Page 39 and 40: Setup MenuMark LevinsonSet Inputs M
Page 41 and 42: Setup MenuMark LevinsonCharacter Li
Page 43 and 44: Setup MenuMark LevinsonRec.OutNONE,
Page 45 and 46: Setup MenuMark LevinsonTeach IR Men
Page 47 and 48: 4Controls & ModesStandbyAllows the
Page 49 and 50: Nº 320S Controls & ModesTo adjust
Page 51 and 52: Nº 320S Controls & ModesMono Playb
Page 53 and 54: Nº 320S Controls & Modes8. When th
Page 55 and 56: Nº 320S Controls & ModesTo activat
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5Troubleshooting & MaintenanceTroub
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Nº 320S Troubleshooting & Maintena
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Nº 320S Troubleshooting & Maintena
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AppendixMark LevinsonSpecifications
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AppendixMark Levinson(continued)Ins
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IndexMark LevinsonIndex (continued)
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IndexMark LevinsonIndex (continued)
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Obtaining ServiceWe take great prid
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