Transcription
Owner’s ManualNº326SPreamplifier
Important Safety Instructions1. Read these instructions2. Keep these instructions.3. Heed all warnings.4. Follow all instructions.5. Do not use this apparatus near water.6. Clean only with a dry cloth.7. Do not block ventilation openings. Install in accordance with the manufacturer’s instructions.8. Do not install near any heat sources such as radiators, heat registers, stoves, or another apparatusthat produces heat.9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug hastwo blades with one wider than the other. A grounding-type plug has two blades and a thirdgrounding prong. The wide blade or third prong is provided for safety. If the provided plugdoes not fit into the outlet, consult an electrician for replacement of the obsolete outlet.10. Protect the power cord from being walked on or pinched, particularly at plugs, conveniencereceptacles, or the point where it exits from the apparatus.11. Only use attachments and accessories specified by the manufacturer.ii12.Use only with the cart, stand, tripod, bracket, or table specified by the manufactureror sold with the apparatus. When a cart is used, use caution when moving thecart/apparatus combination to avoid injury or tip over.13. Unplug this apparatus during lightning storms or when unused for long periods of time.14. Refer all servicing to qualified service personnel. Servicing is required when the apparatus hasbeen damaged in any way, such as when the power cord or plug has been damaged; liquid hasbeen spilled or objects have fallen into the apparatus; or the apparatus has been exposed torain or moisture, does not operate normally, or has been dropped.15. No naked flame sources, such as candles, should be placed on the apparatus.16. The power cord is intended to be the safety disconnect device for this apparatus. Ready accessto the power cord should be maintained at all times.17.Terminals marked with this symbol may be considered HAZARDOUS LIVE and theexternal wiring connected to these terminals requires installation by an INSTRUCTEDPERSON or the use of ready-made leads or cords.Warning!To reduce the risk of fire or electric shock, do not expose the apparatus to rain or moisture. Donot place objects containing liquid, such as vases, on this apparatus.
FCC NoticeThis equipment has been tested and found to comply with the limits for a Class B digital device,pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protectionagainst harmful interference in a residential installation. This equipment generates, uses, and canradiate radio frequency energy and, if not installed and used in accordance with the instructions,may cause harmful interference to radio communications. However, there is no guarantee thatinterference will not occur in a particular installation. If this equipment does cause harmfulinterference to radio or television reception, which can be determined by turning the equipmentoff and on, the user is encouraged to try to correct the interference by one or more of the followingmeasures: Reorient or relocate the receiving antenna. Increase the separation between the equipment and the receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver isconnected. Consult an authorized Mark Levinson dealer or an experienced radio/TV technician for help.Caution!Changes or modifications not expressly approved by the party responsible for compliance couldvoid the user’s authority to operate the equipment.iiiCanadaThis Class B digital apparatus complies with Canadian ICES-003.Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.3 Oak ParkBedford, MA 01730-1413 evinson.comCustomer ServiceTelephone:781-280-0300Sales Fax:781-280-0495Service Fax: 781-280-0499Product Shipments16 Progress RoadBillerica, MA 01821-5730 USAPart No. 070-16658 Rev 0 06/04“Mark Levinson” and the Mark Levinson logo are registered trademarksof Harman International Industries. U.S. patent numbers and otherworldwide patents issued and pending.“Madrigal Audio Laboratories” and the Madrigal Audio Laboratorieslogo are registered trademarks of Harman International Industries.U.S. patent numbers and other worldwide patents issued and pending. 2004 Harman Specialty Group. All rights reserved.This document should not be construed as a commitment on thepart of Harman Specialty Group. The information it contains issubject to change without notice. Harman Specialty Group assumesno responsibility for errors that may appear within this document.
Nº326S PreamplifierTable of ContentsTable of ContentsDocumentation Conventions . . . . . . . . . . . . . . . .viiSection 1: Getting StartedSpecial Design Features. . . . . . . . . . . . . . . . . . . . . . . .1-1Highlights Product RegistrationInstallation Considerations . . . . . . . . . . . . . . . . . . . . . .1-4Unpacking Placement Remote Control BatteriesPower Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7Warm-Up & Break-In Period Continuous OperationQuick Start Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8Section 2: Basic OperationFront Panel Overview . . . . . . . . . . . . . . . . . . . . . . . . . .2-1Rear Panel Overview . . . . . . . . . . . . . . . . . . . . . . . . . . .2-5Linking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-9Making Link Connections Constructing LinkCommunication Cables Creating a Slave Chain LinkControlsRemote Control Overview . . . . . . . . . . . . . . . . . . . . . .2-15Operation Considerations Command OverviewSection 3: Setup MenuNavigating the Setup Menu . . . . . . . . . . . . . . . . . . . . . .3-1setup button enter button select knob & buttons volume knob & buttonsSet Inputs Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3Set Inputs Menu Shortcut Name Gain Offset Rec.OutTeach IR Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-8Setup Menu Parameters . . . . . . . . . . . . . . . . . . . . . . .3-11Mute MaxVol Trig. Swv
Table of ContentsMark LevinsonSection 4: Controls & ModesStandby . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1SLEEPDisplay Intensity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2Polarity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3Balance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3Mono Playback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5MODE L R Balance Control Tip L – R PhonoAlignment TipSSP (Surround Sound Processor) Mode . . . . . . . . . . . . . .4-8Section 5: Troubleshooting & MaintenanceTroubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1No Power No Remote Control Operation No IRLearning No Main Output No Record Output AudibleHum “Missing” Input No Link Controls ErraticBehavior If All Else Fails viRestoring Factory-Default Settings . . . . . . . . . . . . . . . . .5-4Care & Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . .5-5AppendixSpecifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-1DimensionsInstallation Worksheet . . . . . . . . . . . . . . . . . . . . . . . . .A-4Declaraton of Conformity . . . . . . . . . . . . . . . . . . . . . . . A-5Index
Nº326S PreamplifierDocumentation ConventionsDocumentationConventionsThis document contains general safety, installation, and operationinstructions for the Nº326S Preamplifier. It is important to read thisdocument 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.Appears on the component to indicatecompliance of with the EMC (ElectromagneticCompatibility) and LVD (Low-voltageDirective) standards of the EuropeanCommunity.WARNINGCalls attention to a procedure, practice,condition, or the like that, if not correctlyperformed or adhered to, could result inpersonal injuries or death.CAUTIONCalls 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.NoteCalls attention to information that isessential to highlight.vii
1Getting StartedSpecial Design FeaturesThank you for purchasing the Nº326S Preamplifier. The Nº326Sfeatures 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 Nº32. The Nº326S is similar tothe Nº320S, but the main circuit board has been replaced with anArlon board that responds more quickly to transient signals inboth the high and low frequency regions. The Arlon also presentsa deeper imaging that reveals more of the subtle nuances of arecording, imparts a more engaging texture to the high frequencies, and presents more of the ambience of a recording. All ofthese properties work together to yield a sonic signature that iswider, deeper, warmer, and clearly superior.With a single-chassis design, the Nº326S achieves separation of audiocircuit, control circuit, and power supply sections similar to that ofthe dual-chassis Nº32. The internal structure of the Nº326S 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 Nº326S 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.To compensate for this, the Nº326S 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 lowvoltage secondaries for improved isolation.In addition, the Nº326S uses two active voltage regulation stagesfor audio circuit sections. A high-power stage absorbs line-voltage1-1
Getting StartedMark Levinsonand temperature variations, while a second high-performancestage provides local, high-speed, low-noise power for audio circuits.An advanced dual-mono design allows the Nº326S to achieveexceptional channel separation. Both audio channels useindependent power supplies, communication circuits, and audiocircuits. In fact, each channel’s audio circuits are located in aseparate area of the chassis. This innovative approach isolateseach channel, allowing the Nº326S to produce vividly detailed,three-dimensional sonic images.To maximize channel separation, all left-channel connectors arelocated on one side of the rear panel and all right-channelconnectors are located on the other side of the rear panel. Theconnector complement includes three balanced (female XLR) andfour single-ended (Mark Levinson-designed RCA) stereo inputconnectors as well as separate stereo main and record outputconnectors. Two Link communication ports make it possible tolink the Nº326S to compatible Mark Levinson components, whilea trigger output connector, ir input connector, and RS-232 portoffer even more control possibilities.1-2For even greater isolation, the Nº326S deactivates unused inputsto prevent interference from other components. When an input isdeactivated, the Nº326S disconnects the input signal and groundconnection, eliminating ground loop noise between the Nº326Sand the associated component. As a result, input signals passthrough the Nº326S with remarkable freedom from interference.The Nº326S offers seven configurable inputs, each of which isassigned to one of its balanced (XLR) or single-ended (RCA) inputconnectors. Single-ended input signals are converted to balancedsignals upon entering the chassis, and processed as balanced signalsthereafter. During this rigorous conversion process, meticulouslybalanced circuits preserve all input signal information, passing itto the associated power amplifier without the limitations ofasymmetrical single-ended designs.A large front panel select knob provides convenient selection ofthe desired input. When an input is selected, just press and holdthe front panel or remote control setup button to open thecorresponding Set Inputs menu, which can be used to changeinput names, optimize input gain levels, offset input volumelevels, and assign record output connectors.Two Mark Levinson-designed discrete volume attenuators controlmaster volume level with unparalleled accuracy and sonic neutrality.Constructed from Arlon circuit boards with local power supplyregulation and bypass capacitors, the volume attenuators generate
Nº326S PreamplifierGetting Startedoptimal power and isolation for even the most sensitive adjustments. Precision surface-mounted resistors accommodate adjustments in 1.0dB increments up to 23.0dB and in 0.1dBincrements above 23.0dB.Unlike most stereo preamplifiers, the Nº326S is designed tointegrate with multi-channel surround sound processors withoutthe complications associated with competing stereo and multichannel master volume controls. SSP (surround sound processor)mode allows the Nº326S to deactivate its master volume controlto send line-level input signals to the associated processor. Withno interference from the Nº326S, the processor controls therelative volume level of all channels, allowing it to maintain itscarefully calibrated levels.Following the Mark Levinson tradition, the Nº326S exceeds allreasonable expectations for a stereo preamplifier. Its flexibledesign – including seven configurable inputs, separate main andrecord output connectors, and complete surround sound processorintegration – allow it to accommodate a wide range of demands.Even more, a series of advanced techniques shield audio circuits,resulting in an incomparable sound befitting sophisticated musicreproduction systems.Highlights1-3 7 configurable inputs Maximum channel separation Advanced dual-mono design Multi-channel surround sound processor integration 3 balanced (female XLR) and 4 single-ended (Mark Levinsondesigned RCA) stereo input connectors Separate main and record output connectors Independent power supplies, communication circuits, andaudio circuits for each channel Effective noise suppression and isolation techniques AC power filtering 2 active voltage regulation stages for audio circuit sections Independent power supplies for audio circuit and control circuitsections, each with its own low-noise toroidal transformer Faraday shield between AC power line and low-voltagesecondaries 2 proprietary discrete volume attenuators Deactivation of unused inputs to eliminate ground-loop noise
Getting StartedMark LevinsonProduct Registration1-4 Balanced conversion for single-ended input signals Mono or stereo playback Selectable output signal polarity Balance control Intuitive Set Inputs menu Sleep timer (standby) Large front panel display Selectable display intensity 2 Mark Levinson Link communication ports Configurable trigger output connector (12 or 5V) ir input connector RS-232 port Optional phono modulesPlease register the Nº326S within 15 days of purchase. To do so,register online at www.marklevinson.com or complete and returnthe included product registration card. Retain the original, datedsales receipt as proof of warranty coverage.Installation ConsiderationsThe Nº326S requires special care during installation to ensureoptimal performance. Pay particular attention to the bulleteditems that appear in this section and to other precautions thatappear throughout this user guide.Unpacking DO save all packing materials for possible future shippingneeds. DO inspect the Nº326S for signs of damage during shipment.If damage is discovered, contact an authorized Mark Levinsondealer for assistance making appropriate claims. DO locate and remove the accessory box from the carton.Make sure it contains all of the items listed in the table at thetop of the next page. If not, contact an authorized MarkLevinson dealer.
Nº326S PreamplifierGetting StartedItemQuantityDetachable AC power cord1Link communication cable11/8-inch hex key1Phillips-head screwdriver (size 1)1Nº326S remote control *1White gloves (pair)**1Warranty & Product Registration Card1*The remote control comes with two AAA batteries, whichshould be replaced as needed.** The white gloves are provided to assist with the initial unpackingand installation of the Nº326S.Placement DO install the Nº326S on a solid, flat, level surface such as ashelf or table. DO install the Nº326S close to associated components to keepinterconnect cabling as short as possible.1-5NoteIn some cases, it is better to use longer interconnect cablingbetween the preamplifier and the power amplifier to allowfor shorter loudspeaker wires. DO select a dry, well-ventilated location out of direct sunlight. DO allow at least a 4-inch clearance above the Nº326S forproper heat dissipation. It is strongly recommended to installthe Nº326S on its own shelf for proper ventilation. DO refer to Dimensions (page A-3) for assistance with custominstallations. DO NOT place the Nº326S on a thick rug or carpet or coverthe Nº326S with a cloth, as this might prevent proper cooling. DO NOT expose the Nº326S to high temperatures, humidity,steam, smoke, dampness, or excessive dust. Avoid installingthe Nº326S near radiators and other heat-producing appliances.
Getting StartedMark Levinson DO NOT install the Nº326S near unshielded TV or FMantennas, cable TV decoders, and other RF-emitting devicesthat might cause interference. DO NOT place the Nº326S on a windowsill or in anotherlocation in which it will be exposed to direct sunlight. DO NOT obstruct the IR receiver located in the front paneldisplay. When the Nº326S is not using the ir input connector,the remote control IR transmitter must be in line-of-sightwith the IR receiver for proper remote control operation.CAUTIONBEFORE MOVING THE Nº326S, MAKE SURE IT ISPOWERED OFF WITH THE FRONT PANEL POWERBUTTON. THEN, MAKE SURE THE POWER CORD ISDISCONNECTED FROM THE ac mains CONNECTORAND THE ELECTRICAL OUTLET.WARNINGMAKE SURE ALL COMPONENTS ARE PROPERLYGROUNDED. DO NOT DEFEAT THE SAFETY PURPOSE OFPOLARIZED OR GROUNDING-TYPE PLUGS WITH“GROUND-LIFTER” OR “CHEATER” ADAPTORS. DOING SOMAY CAUSE DANGEROUS VOLTAGES TO BUILD UPBETWEEN COMPONENTS. THE PRESENCE OF THESEVOLTAGES MAY RESULT IN PERSONAL INJURIES AND/ORPRODUCT DAMAGE.1-6Remote ControlBatteriesThe remote control comes with two AAA batteries, which shouldbe replaced as needed. It is recommended to use Alkaline batteries,which do not leak and last longer.To replace the remote control batteries:1. Locate the battery compartment cover on the back of theremote control.Screws2. Use the supplied Phillips-head screwdriver (size 1) to removethe three screws that hold the battery compartment cover inplace. These screws are identified in the illustration to the left.3. Remove the battery compartment cover from the remotecontrol.4. Remove the old batteries inserted in the battery compartment(if applicable).
Nº326S PreamplifierGetting Started5. Insert two AAA batteries as shown in the illustration to theleft. Make sure the batteries are correctly inserted observing theproper polarity.6. Align the battery compartment cover with the guide on theback of the remote control.7. Replace the three screws that were removed in step 2.8. Properly dispose of the old batteries (if applicable).Power RequirementsThe Nº326S can be powered with a standard 15amp AC powerline. If other components are also connected to the AC powerline, the combined power requirements of all components shouldbe considered.When shipped, the Nº326S is configured for 100, 120, 220, or230VAC power operation at 50 or 60Hz. In compliance with CEregulations, the Nº326S is configured for 230VAC power operationat 50Hz in European Union countries. Before operating the Nº326S,make sure the ac mains connector label indicates the correctoperating voltage for the current location.CAUTIONWarm-Up & Break-InPeriod DO NOT ATTEMPT TO ADJUST THE OPERATINGVOLTAGE. CONSULT AN AUTHORIZED MARK LEVINSONDEALER IF THE OPERATING VOLTAGE IS INCORRECTOR IF THE OPERATING VOLTAGE MUST BE CHANGEDFOR RELOCATION PURPOSES. BE ADVISED THAT DIFFERENT OPERATING VOLTAGESMAY REQUIRE THE USE OF DIFFERENT POWER CORDSAND/OR ATTACHMENT PLUGS. CONTACT ANAUTHORIZED MARK LEVINSON DEALER FORADDITIONAL ASSISTANCE.Although the Nº326S delivers superior performance from the firsttime it is powered on, this performance will continue to improveas the Nº326S reaches its normal operating temperature andvarious components “break in.” The greatest performanceimprovements will occur within the first 25 to 50 hours of use.Sound quality will continue to improve for about 300 hours.1-7
Getting StartedMark LevinsonAfter this initial period, performance will remain consistent unlesspower is disconnected from the ac mains connector. Power isdisconnected from the ac mains connector when the Nº326S ispowered off with the front panel power button; the power cord isdisconnected from the ac mains connector or the electrical outlet;or an extended power failure or power outage occurs. Power is notdisconnected from the ac mains connector when the Nº326S isin standby.When power returns, the Nº326S will require a brief warm-up andbreak-in period (not the full 300 hours). It is recommended toallow the Nº326S and other audio components to stabilize forabout 2 minutes.Note When powered on with the front panel power button,the Nº326S automatically enters standby after completingthe initialization sequence. The main output connectors are muted while theNº326S performs the initialization sequence.1-8Continuous OperationThe Nº326S should be unplugged during lightning storms andextended periods of non-use. Otherwise, it is designed forcontinuous operation. For best performance, make sure power isconnected to the ac mains connector at all times. Duringnormal operation, do not use the power button to power off theNº326S. Instead, use the front panel or remote control standbybutton to place the Nº326S into standby, which allows theNº326S to remain warmed-up to deliver optimal performance atall times.Quick Start GuideThese instructions are intended to accommodate immediate use ofthe Nº326S. However, it is important to read this owner’s manualbefore attempting more extensive use. This owner’s manual containsinformation about features that enhance operation and performance,as well as important safety, installation, and operation instructionsdesigned to prevent personal injuries as well as product damage.
Nº326S PreamplifierGetting StartedCAUTIONNEVER MAKE OR BREAK CONNECTIONS TO THE Nº326SUNLESS IT AND ALL ASSOCIATED COMPONENTS AREPOWERED OFF AND DISCONNECTED FROM ELECTRICALOUTLETS.To begin using the Nº326S:1. Make sure the Nº326S and all associated components arepowered off and disconnected from electrical outlets.NoteThe Nº326S offers balanced (XLR) and single-ended (RCA)stereo connections. For best performance, use balanced(XLR) connections whenever possible. A balanced connectionbetween the Nº326S and the associated power amplifier willoffer the highest possible performance with the bestprotection against RF interference and other common modenoise.1-92. Connect the desired Nº326S stereo input connectors to thesource component (e.g., CD player) output connectors. Use the Nº326S balanced (XLR) stereo input connectorslabeled 1, 2, or 3 if the source component offers balanced(XLR) output connectors. Use the Nº326S single-ended (RCA) stereo input connectorslabeled 4, 5, 6, or 7 if the source component does not offerbalanced (XLR) output connectors.3. Connect the desired Nº326S stereo main output connectors tothe associated power amplifier. Use the Nº326S balanced (XLR) stereo main outputconnectors if the associated power amplifier offers balanced(XLR) input connectors. Use the Nº326S single-ended (RCA) stereo main outputconnectors if the associated power amplifier does not offerbalanced (XLR) input connectors.
Getting StartedMark Levinson4. Reconnect the Nº326S and all associated components toelectrical outlets. Then, power on the Nº326S and all associatedcomponents. It is recommended to power all power amplifierson last.5. Rotate the Nº326S front panel select knob or press the remotecontrol select buttons to select the Nº326S input thatcorresponds to the Nº326S stereo input connectors selected instep 2.1-10 The Nº326S front panel display indicates the name andvolume level of the selected input. Factory-default input names correspond to their assignedstereo input connectors. For instance, Input 1 is assignedto the stereo input connectors labeled 1, Input 2 is assignedto the stereo input connectors labeled 2, and so on.
2Basic Operation35476IR ReceiverpolaritymonovolumeselectPREAMPLIFIERNº 326Spowersetupenterdisplay intensitybalancemutestandby1891011122The numbers in the Nº326S front panel illustration shown above correspond to the numbered items in the Front Panel Overviewsection that begins below.Front Panel OverviewUnless otherwise specified, the numbered items in this sectionindicate the commands the front panel performs during normaloperating mode. Refer to Section 3: Setup Menu and Section 4:Controls & Modes for information about other commands the frontpanel performs.1. power buttonPowers the Nº326S on and off when the supplied power cordis connected to the ac mains connector and an electricaloutlet. When the Nº326S is powered off, pressing the powerbutton connects power to the ac mains connector andpowers on the Nº326S. When powered on, the Nº326Sautomatically enters standby after completing the initializationsequence. When the Nº326S is powered on, pressing the powerbutton disconnects power from the ac mains connector andpowers off the Nº326S.NoteBefore operating the Nº326S, make sure the ac mainsconnector label indicates the correct operating voltage (page1-7) for the current location.2-1
Basic OperationMark Levinson2. standby button & LEDPlaces the Nº326S into standby and takes the Nº326S out ofstandby, which allows the Nº326S to remain warmed-up todeliver optimal performance at all times. The front panelstandby LED blinks red to indicate that the Nº326S is in standbyand lights red to indicate that the Nº326S is not standby.NotePower is still connected to the ac mains connector whenthe Nº326S is in standby.3. select knobSelects the desired input. Rotating the select knob scrollsthrough all activated inputs. The front panel display indicatesthe name and volume level of the selected input. Select knobscrolling does not include deactivated inputs – inputs forwhich the Name parameter has been set to unused.4. front panel display2-2Includes 12 alphanumeric characters that provide one-lineviewing of information. During normal operating mode, thefront panel display indicates the name and volume level ofthe selected input.The right side of the front panel display includes an IR receiverthat receives infrared commands from the remote control IRtransmitter when the Nº326S is not using the rear panel irinput connector. Refer to Operation Considerations (page 2-15)for additional information.5. polarity LEDLights red to indicate that main output signal polarity hasbeen inverted with the remote control polarity button. Referto Polarity (page 4-3) for additional information.6. mono LEDLights red to indicate that mono playback has been activatedwith the remote control mono button. Refer to Mono Playback(page 4-5) for additional information.
Nº326S PreamplifierBasic Operation7. volume knobAdjusts master volume level. Rotating the volume knobincreases (clockwise) and decreases (counterclockwise) mastervolume level in 1.0dB increments up to 23.0dB and in 0.1dBincrements above 23.0dB. The minimum master volume levelsetting is OFF. The MaxVol parameter can be used to determinethe maximum master volume level setting in 0.1dB incrementsbetween 40.0 and 80.0dB. The factory-default maximummaster volume level is 80.0dB.The Offset parameter can be used to determine individualinput volume level offsets in 0.1dB increments between –20.0and 20.0dB. The factory-default input volume level offset is0.0dB. Whenever an input is selected, the Nº326S automaticallyapplies the Offset parameter setting to master volume level.Note the following about using the volume knob: Rotating the volume knob quickly accelerates the rate ofchange to accommodate large adjustments. Rotating thevolume knob too quickly decelerates the rate of change toprevent accidental adjustments that could send dangeroussignal levels to the loudspeakers. Rotating the volume knob slowly decelerates the rate ofchange to accommodate fine, precise adjustments.Note The master volume control does not affect record outputlevels. All Nº326S volume controls, including master volumeand balance, are deactivated when SSP mode (page 4-8)is activated.8. setup button & LEDOpens and closes the setup menu, which can be used toconfigure the Nº326S to suit indi
Bedford, MA 01730-1413 USA Telephone: 781-280-0300 Fax: 781-280-0490 www.marklevinson.com Customer Service 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. 070-16658 Rev 0 06/04 "Mark Levinson" and the Mark Levinson logo are registered .
