Mark Levinson No33H User's Manual
Contents
1. e Use an 8 pin RJ 45 plug when connecting to a preamplifier RJ 45 plugs provide an 8 pin connection e Usea 6 pin RJ 11 plug when connecting to a power amplifier RJ 11 plugs provide a 6 pin connection in which connector pins 7 and 8 are not used Note BEFORE making Link connections refer to the appropriate documentation for Link or Link communication port specifications for other Mark Levinson components When linking components with constructed Link communication cables twist the cable 180 as shown in the illustration below for a straight through pin 1 to pin 1 connection Note Contact an authorized Mark Levinson dealer for additional assistance with making Link connections Mark Levinson N 33H Preamplifier Monaural Amplifier 670 RJ 11 Plug Pin 1 8 Pin RJ 45 Plug Pin 1 n N233H Mark Levinson Monaural Amplifier Power Amplifier 6 in RJ 11 Plug Pin 1 6 Pin RJ 11 Plug Pin i E Pins 7 and 8 are not used Making Link connections creates a slave chain that facilitates communication among linked components allowing them to share certain controls All slave chains e Must include compatible Mark Levinson components The N933H is compatible with the components listed on the previous page Refer to the appropriate documentation for Link compatibility information about other Mark Levinson components e Must include components that are connected in a certain order to prevent communication from2. Bedford MA 01730 1413 USA The equipment identified here conforms to the Directive s and Standard s specified above 25 Type of Equipment Monaural Power Amplifier Models Mark Levinson N233H Date January 2005 Harman Specialty Group Vice President of Engineering 3 Oak Park Bedford MA 01730 1413 USA Telephone 781 280 0300 Fax 781 280 0490 www harmanspecialtygroup com Notes aches aVINSOM MADRIGAL AUDIO LABORATORIES 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 630273 Rev 3 02 05
3. fault condition Description it will reoort the fault condition to the linked preamplifier If this occurs the power amplifier number and fault condition code will appear on the preamplifier front EEE panel display Indicates a DC offset that cannot be corrected Fault Condition Link Indicates a thermal fault condition The power amplifier number refers to its position in the slave chain For example AMP1 refers to the first power amplifier in the slave chain Power amplifier fault condition codes are described in the table to the right 19 Note the following e Linked components must be powered on ONE AT A TIME in the specific order listed in step 3 previous page to ensure proper functioning of Link controls e Link controls must be enabled on the linked digital transport linking menu which allows activation and deactivation of individual Link controls Refer to the appropriate digital transport owner s manual for additional information e Some Mark Levinson digital transports accommodate a maximum of four front panel display characters In these cases certain input names appear abbreviated on the front panel display For example an input named No320S will appear as No32 on the digital transport front panel display even though the input is associated with the N 3205 e The linked preamplifier and power amplifier s must bein the same standby state to allow the linked power amplifier s to enter standby after a powe
4. field distortions that can occur with such a massive power delivery system The input signal remains balanced and rejection of common mode noise and distortion is achieved in the loudspeaker s voice coil The N933H operates like a true voltage source maintaining the appropriate voltage at a given time based on signal demands without particular regard for the current demands of the associated loudspeakers Whether the loudspeakers require a 1 or 50 amp cur rent the N933H will deliver Forty output transistors distributed throughout the four main heat sinks conduct and control the flow of power to the associated loudspeakers Ten complementary pairs of output transistors are used in both the inverting and non inverting output stages No known high quality loudspeaker can continuously absorb the full power of the N233H but many loudspeakers require these extreme bursts of power on a short term basis when reproducing music at realistic levels The N933H provides these short bursts without creating power supply sag or altering sonic performance Its imperturbable nature is reflected in the authority and control with which it reproduces musical signals The NS33H is designed to shut down if it senses certain fault conditions that could cause damage to itself or associated loudspeakers These fault conditions include e The presence of DC direct current at the output e Sustained output current gt 40 amps indicating a short circuit
5. power amplifier that offers Link or Link communication ports The N933H can be connected to the following Mark Levinson components e N30 Series preamplifiers including the N932 N938 and N 2385 e N9300 Series preamplifiers including the N23205 N2326S N 2380 and N23805 e N2400 Series power amplifiers including the N2431 N2432 N 2434 and N2436 15 e N239 and N2390S CD Processors e Refer to the appropriate documentation for Link compatibility information about other Mark Levinson components DO use Link or Lin communication ports such as master slave in slave out Link Link input and Link control communication ports e DO use supplied Link communication cables which are provided in the accessory box e DO use constructed Link communication cables Refer to Constructing Link Communication Cables for additional information DO NOT use RS 232 ports or other rear panel connectors Link connections must be made using Link or Link communication ports and supplied or constructed Link communication cables Connections made with other connectors or cables may damage the N233H and other linked components possibly voiding the manufacturers warranty and or standard repair policies 16 Constructing Link Communication Cables Creating a Slave Chain Link communication cables can be constructed using an 8 conductor modular telephone cable with the appropriate plug crimped on each end
6. terminating Power amplifiers such as the N233H must be the last components in a Slave chain Note The slave chains in this section include preamplifiers and power amplifiers However slave chains can also include digital audio processors and digital transports Refer to the appropriate documentation for information about including these Mark Levinson components in a slave chain The table below indicates slave chain requirements for preamplifiers and power amplifiers Preamplifier No maximum number per slave chain e g N23205 Connect the 2 or slave out communication port on the preamplifier to the slave in communication port on the N933H Power Amplifier Maximum of six per slave chain e g N 33H Connect the slave in communication port on the 17 NS33H to the 2 or slave out communication port on the preamplifier Connect up to six power amplifiers in a daisy chain using slave in 2 input to slave out 2 control communication port connections The slave out 2 control communication port on the last power amplifier is not connected To create a slave chain that includes the N233H 1 Make sure the N933H and all associated components are powered off 2 Connect the slave in communication port on the N933H to the Link or slave out communication port on the preamplifier If desired connect the slave out communication port on the N233H to the slave in in input communication
7. 80 0499 2005 Harman Specialty Group All rights reserved Product Shipments 16 Progress Road This document should not be construed as a commitment on the Billerica MA 01821 5730 USA part of Harman Specialty Group The information it contains is subject to change without notice Harman Specialty Group assumes Part No 070 630273 Rev 3 02 05 no responsibility for errors that may appear within this document Documentation Conventions This document contains general safety installation and operation instructions for the N233H Power Amplifier It is important to read this document before attempting to use these components Pay particular attention to safety instructions Warning Caution Note Appears on the component to indicate the presence of uninsulated dangerous voltages inside the enclosure voltages that may be sufficient to constitute a risk of shock Appears on the component to indicate important operation and maintenance instructions included in the accompanying documentation Appears on the component to indicate compliance with the EMC Electromagnetic Compatibility and LVD Low voltage Directive standards of the European Community Calls attention to a procedure practice condition or the like that if not correctly performed or adhered to could result in personal injury or death Calls attention to a procedure practice condition or the like that if not correctly performed or
8. Note Linked components must be powered on ONE AT A TIME in the specific order listed in step 3 above to ensure proper functioning of Link controls DO NOT use a power strip switch to power on several components at once When power is supplied to a strip connected components that do not include a power button will automatically power on 4 Take the linked preamplifier out of standby All linked power amplifiers should come out of standby as well If this does not occur repeat steps 3 and 4 If problems persist contact an authorized Mark Levinson dealer Link Controls Linking Mark Levinson components allows them to share certain controls The table below provides a general description of controls the N233H shares with other linked components Some controls may not be available for certain component combinations Other Mark Levinson components may share additional controls Refer to the appropriate documentation for additional information contrat Sa EEE ee NOA Standby Link Placing the linked preamplifier into standby Placing a linked power amplifier into standby also places all linked power amplifiers into also places all other linked power amplifiers standby Taking the linked preamplifier out of into standby Taking a linked power amplifier standby also takes all linked power amplifiers out of standby also takes all other linked power out of standby amplifiers out of standby If alinked power amplifier experiences a
9. Owner5 Manual N933H M onaura Power Amplifier Der eVhSson MADRIGAL AUDIO LABORATORIES QD OY OT SN NE 10 11 12 13 14 15 16 17 Important Safety Instructions Read these instructions Keep these instructions Heed all warnings Follow all instructions Do not use this apparatus near water Clean only with a dry cloth Do not block ventilation openings Install in accordance with the manufacturer s instructions Do not install near any heat sources such as radiators heat registers stoves or another apparatus that produces heat Do not defeat the safety purpose of the polarized or grounding type plug A polarized plug has two blades with one wider than the other A grounding type plug has two blades and a third grounding prong The wide blade or third prong is provided for safety If the provided plug does not fit into the outlet consult an electrician for replacement of the obsolete outlet The MAINS cord is intended to be the safety disconnect device for this apparatus Ready access to the MAINS cord shall be maintained at all times Protect the power cord from being walked on or pinched particularly at plugs convenience receptacles or the point where it exits from the apparatus Only use attachments and accessories specified by the manufacturer Unplug this apparatus during lightning storms or when unused for long periods of time Refer all servicing to qualified service personnel S
10. Y leaving the other end supported by the base of the shipping crate or the floor DO NOT try to lift the N233H while bending at the waist When lifting keep your back straight and use your leg muscles to lift 1 Carefully cut the nylon straps around the crate Note that the straps may be under tension causing them to snap outward when cut To avoid personal injuries keep your face and body as far as possible from the box when cutting each strap 2 Remove the screws securing the top of the crate to the base 3 Lift the top of the crate upward until it clears the top of the N933H Then set the top of the crate aside Moving the N 33H Product Registration 4 Use a socket wrench to remove e The four 9 16 inch hexagonal head bolts that secure the N933H to the base of the crate These bolts attach directly to the bottom of the N233H s feet and are accessible underneath the pallet on which the N933H sits e The two 9 16 inch hexagonal head bolts that hold the retaining bar in place Please read and understand these instructions before attempting to move the N933H from the shipping crate base Note Protect delicate floor surfaces before moving the N 33H off the crate and onto the floor 1 Position two people at the front of the N933H to support its weight a third person may be needed to hold the base of the crate in place while the N933H is moving 2 When all people arein position carefully slide the N933H off o
11. across the outputs e Over or under voltage conditions at the ac mains connector e Unsafe operating temperatures in a critical area within the amplifier When powered on or placed in standby the N233H will automatically power off as if the rear panel power switch had been set to the off position if a fault condition is detected It will not power on again until the fault condition is corrected To restore normal operation remove the cause of the fault and power cycle the amplifier with the ac mains relay switch on the rear panel In addition the AC input to each transformer is fused to protect against excessive current conditions such as driving shorted outputs In rush limiting prevents premature aging of power supply components during power up and switches to off line once the power supply has been charged Finally the N933H incorporates a controlled clipping circuit that prevents output devices from saturating The harsh high frequency harmonics generated by hard clipped output devices are avoided by the wave shaping action of this controlled clip circuitry 10 Front Panel 1 N standby button When power is first applied to the N 33H power amplifier and assuming the rear panel AC mains switch is set to its on posi tion the amplifier remains completely off Press the front panel standby button to bring the amplifier from completely off to standby Each time you subsequently press the standby button aft
12. adhered to could result in damage or destruction to part or all of the component Calls attention to information that is essential to highlight Table of Contents Unpacking rit his a A nd a ta ae td 2 Opening the Shipping Crate 2 Moving the N933H 3 Product Registration 3 Installation Considerations 4 Placement 2 52 2 tardan a ean da dea 4 Ventilation charra ta vit nues ad 4 Power Requirements 5 Warm up amp Break in Period 6 Continuous Operation 6 Special Design Features 7 Massive Power Supply 7 AC Power Regeneration 7 Fully Balanced Design 8 True Voltage Source 8 Extensive Protection 8 Front Paella in ete Dan 10 Rear Panel ited ae an il ddr entre etes S48 11 Linking sie ee ein Rigen NE et Rt are eee error ane dde 15 Making Link Connections 15 Constructing Link Communication Cables 16 Creating a Slave Chain 16 LINK CONEDOIS cer ladra hha wedded abe ic 19 Troubleshooting 20 Care amp M
13. aintenance 4 1 1 22 Specifications 0ooooomonmorsa o 23 DIMENSIONS 20000 i a Sk e le son Sn 24 Declaration of Conformity 25 Warning Caution Opening the Shipping Crate Unpacking DO NOT attempt to lift or move the N233H without adequate assistance Failure to follow the procedures included in this owners manual may result in personal injury and or product damage The shipping weight of each N 33H Monaural Power Amplifier is approximately 220 pounds 100 kg To avoid injury handle the N933H with extreme care At least two strong people are required to unpack the N933H amplifier from its shipping crate Two pair of knit white gloves with special gripping surfaces on the palms and fingers are included with your new N233H Please wear these gloves when lifting and moving the amplifier When unpacking the N 33H DO keep the N933H shipping crate upright at all times as indicated by the arrows on the outside of the crate The N233H shipping crate is modular in design to facilitate the unpacking process DO save all screws and packing materials for possible future shipping needs DO inspect the N233H for signs of damage during shipment If damage is discovered contact an authorized Mark Levinson dealer for assistance making the appropriate claims DO NOT attempt to lift the entire NS33H at one time even with two people Always lift one end ONL
14. ction Your Mark Levinson N933H Monaural Power Amplifiers are specifi cally designed to stand on the floor and must be used as free standing units In most installations locating them near the loud speakers is best Obviously this approach minimizes the length of the speaker wires and necessitates longer interconnecting cables from the preamplifier to the power amplifiers The advantage to this strategy is that that the interconnecting cables carry low cur rent signals which are more readily transmitted over distances with great accuracy than are the necessarily high current signals required by loudspeakers You should leave at least six inches 15 cm of free space behind each N933H so that the AC cord and connecting signal cables have sufficient room to bend without crimping or undue strain You should also position each amplifier for easy access to the rear panel power switch This switch effectively disconnects the ampli fier from the AC mains Before moving the N 33H make sure it is powered off with the rear panel power switch Then make sure the power cord is disconnected from the electrical outlet Your Mark Levinson N233H power amplifier is designed to com plement your listening room visually with a tall and narrow frontal area that reduces the effective footprint and makes it far more presentable than would be the case with a more traditional ly proportioned design As a result it can be more easily placed besid
15. e instantaneous currents that power ampli fiers require In effect the line conditioner becomes a bottleneck in the otherwise free flow of power through the amplifier and loudspeakers greatly reducing the dynamic impact of the signal To avoid these performance bottlenecks the N23H uses built in line conditioning techniques When AC power is delivered to the N233H it is rectified filtered and regulated into positive and neg ative DC voltages A portion of this DC power is used to drive an oscillator circuit that regenerates a pure 60 Hz sinewave This sinewave is then used to power a separate power supply dedicated to all voltage gain stages The dedicated power supply benefits from a truly balanced source as well as the total elimination of AC noise and fluctuations As a result the N233H s critical voltage gain stages operate in a truly optimized environment passing a musical signal with outstanding low level resolution and detail Fully Balanced Design True Voltage Source Extensive Protection A truly balanced input topology eliminates the need for an input buffer amplification stage allowing the first stage differential amplifier to be driven directly by the source Matched impedances are presented to the source and both signals travel through identical circuit paths Meticulous attention to the layout of the amplifier including careful mirror imaging of circuits to cancel magnetic fields was essential to minimize magnetic
16. e your loudspeakers As freestanding units the N 33H ampli fiers normally will have no problem with ventilation Please fol low the precautions below DO select a dry well ventilated location out of direct sunlight DO ensure free air flow around the N933H to allow for adequate heat dissipation through air circulation DO keep the top plate and heat sinks free from obstructions that could reduce air circulation DO use fans to increase air circulation if the N933H is installed in an enclosed space Caution DO NOT place the N933H on a thick rug or carpet or cover the N933H with a cloth as this might prevent proper cooling DO NOT expose the N233H to high temperatures humidity steam smoke dampness or excessive dust Avoid installing the N933H near radiators and other heat producing appliances Note Each N933H dissipates about 360 watts of heat energy when idle it is normal and safe for it to run warm Power Requirements When shipped the N933H 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 N233H 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 authorized Mark Levinson dealer if the operating voltage is incorrect or if the operating voltage must be changed for relocation pu
17. er a delay of ten seconds to allow all circuitry to sta bilize the N233H is toggled between standby mode and fully on To turn the amplifier completely off press and hold the stand by button for approximately one second until the front panel indicator light turns off indicator LED Indicates the operating state of the N233H LED Behavior Description Fully lit Indicates that the N233H is powered on Slowly blinking Indicates that the N233H is in standby Dimly lit Indicates that the main power supply is off and only the supervisory power supply operational Not lit Indictes that the N933H is powered off If the amplifier will not power on at all check the rear panel ac mains relay switch Caution Warning Danger Rear Panel E H i i El s r E 3 E 115 3 e gt n Before making any connections turn the master volume on the 11 associated preamplifier all the way down then power off the N233H and all associated components and disconnect them from electrical outlets 1 ac mains Provides power to the N233H when the power cord is connect ed to an electrical outlet One high current AC power cord is provided This cord is specially designed to support potential current requirements when the N233H is driving low imped ance loads The N 33H has been safety tested and designed for operation with a three conductor power cord Do not defeat the third pin or earth ground of
18. ervicing is required when the apparatus has been damaged in any way such as when the power cord or plug has been damaged liquid has been spilled or objects have fallen into the apparatus or the apparatus has been exposed to rain or moisture does not operate normally or has been dropped Ventilation should not be impeded by covering the ventilation openings with items such as newspapers table cloths curtains etc No naked flame sources such as candles should be placed on the apparatus external wiring connected to these terminals requires installation by an INSTRUCTED Terminals marked with this symbol may be considered HAZARDOUS LIVE and the AN PERSON 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 Do not place objects containing liquid such as vases on this apparatus FCC Notice This 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 protection against harmful interference in a residential installation This equipment generates uses and can radiate 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 that interference will not occur in a particular installation If this equipment does ca
19. f the crate s base and onto the floor As the front of the N233H clears the front edge of the crate the two people positioned at the front of the N 33H must begin to support its weight To do this use the handle built into the sculpted faceplate located just above the Mark Levinson logo or the front heat sinks 3 Continue to slide the N233H forward until its center section clears the front edge of the base Then lower the front of the N233H to the floor At this point the floor should support the front of the N233H and the base of the crate should support the rear 4 Position two people at the rear of the N933H a third person may be needed to slide the base of the crate out from underneath the N233H 5 Grip the rear heat sinks Then lift the rear of the N933H leaving the front supported by the floor 6 When the rear of the N933H is lifted slide the base of the crate out from underneath the N 33H then carefully lower the rear of the N233H to the floor Please register your N933H Monaural Power Amplifier within 15 days of purchase Register online at www marklevinson com or complete and return the included product registration card Retain the original dated sales receipt as proof of warranty coverage Placement Caution Ventilation Installation Considerations The N933H requires special care during installation to ensure optimal performance Pay particular attention to the information included in this se
20. generation Special Design Features While the N933H Monaural Power Amplifier is straightforward in everyday use it includes several design features that are responsi ble for its outstanding performance In particular it defies the accepted wisdom that it is impossible to design a large powerful amplifier that also has all the finesse of the finest smaller ampli fiers The N933H features a 3 47 kVA low noise toroidal transformer in a fully balanced power supply a design that provides separate power supplies for the amplifier s inverting and non inverting halves In addition each N233H uses four 60 000 uF low ESR capacitors Heavy bus bars enhance the efficiency of power distribution with in the amplifier and eliminate variances introduced by the wiring harnesses commonly found in even high performance amplifiers High frequency power supply bypass is accomplished using indi vidual PC boards that use 32 components of several different film types The resulting uniformly low power supply impedance seen by various circuits within the N233H lays the foundation for mas sive power and extraordinary finesse The detrimental sonic effects of noisy unbalanced AC power supplies are widely known Commercially available passive AC line conditioners provide some measure of AC power filtering and surge protection for line level components such as preamplifiers and digital audio processors However these line conditioners cannot handle the larg
21. he rear panel power switch waiting at least 10 seconds between powering the N933H off and on 3 No audio and the front panel indicator LED is blinking slowly The NS33H is in standby To take it out of standby press and release the standby button The N233H will power on Danger 4 No audio and the front panel indicator LED is lit at full brightness e The N933H is powered on but is not passing a signal Power the N233H off with the ac mains relay switch then examine the signal cables to ensure a solid connec tion between the N933H and the associated preamplifier and loudspeakers Power the N233H off with the ac mains relay switch before touching the loudspeaker wires 5 The N233H keeps powering off e A fault condition may be present at the input for exam ple a DC signal from the preamplifier or the output for example short circuited loudspeaker wires If this occurs a Power the N933H off with the rear panel ac mains relay switch b Disconnect the input signal and loudspeaker wires c Wait 10 seconds d Power the N933H on with the ac mains relay switch If the N933H powers on without entering standby a fault condition is present at the input or the output To isolate 21 the problem a Power the N933H off with the ac mains relay switch b Reconnect the loudspeaker wires c Power the N933H on with the ac mains relay switch If the N933H powers on into standby the fault condition is prese
22. measured as continuous rms power from 20Hz 20kHz with no more than 0 3 THD Frequency response e Within 0 2 dB from 20Hz to 20kHz Signal to Noise ratio e 75 dB CCIR Input impedance 100kQ balanced e 50kQ unbalanced Voltage gain e 26 8 dB Input sensitivity e 1 59V full rated output Power consumption 360W in idle 130W in standby 23 Mains voltage e Determined by the requirements of the country for which the unit was manufactured cannot be reset by dealer or user Overall dimensions e See Dimensions Shipping weight e 220 pounds 100 kg Connector complement e Four custom binding posts e One3 pin XLR balanced input connector OneRCA input connector Two 18 mini jacks for remote turn on e Two Mark Levinson communications ports on RJ 11 e One captive high current AC receptacle Output impedance e Less than 0 05 from 20 20 000Hz Dimensions 2 80 5 2 80 4 7 11 cm 13 72 cm 7 11 cm par n evinsort 24 1 57 1 04 cm al cm 19 56 49 67 cm x 0 75 T 9 cm 18 5 47 cm 1 41 3 58 cm Lie 22 88 58 1 cm I Declaration of Conformity Application of Council Directive s 89 336 EEC and 73 23 EEC as amended Standard s to which Conformity is Declared EN 55013 2001 EN 55020 2002 EN 60065 1998 EN 61000 3 2 2000 EN 61000 3 3 1995 A1 2001 Manufacturer Harman Specialty Group 3 Oak Park
23. mplifier with sin gle ended outputs These signals are converted to balanced sig nals upon entering the chassis and processed as balanced sig nals thereafter One RCA connector is available If the associated preamplifier does not support balanced connections connect the RCA output on the preamplifier to the RCA input on the N933H To reduce the chance of noise at the otherwise unterminated inverting XLR input insert the supplied U shaped shorting strap between pins 1 and 3 This shorting strap is installed when the N933H is shipped Caution Caution 5 loudspeaker binding posts outputs Provide audio output Two pair of custom made gold plated high current binding posts labeled positive and nega tive are included Positive binding posts are red negative binding posts are black These binding posts are designed to facilitate high pressure high contact area connections without the use of tools such as nut drivers A simple finger tightening actually yields higher contact pressure than traditional hex binding posts There is no need to exert unusual effort when tightening NEVER connect power amplifier outputs to any component other than a loudspeaker NEVER short circuit power amplifier outputs NEVER connect power amplifier outputs to another power amplifiers outputs For best performance use high quality loudspeaker cables with either spade or hook lugs 13 Spade Lug Hook Lug e Connect the posi
24. nent and one 1 8 inch mini jack is available to pass these sig nals along to a connected power amplifier The illustration below shows tip polarity requirements gt Te 5 to 12V positive tip polarity Connect one of the remote turn on jacks on the N933H to the trigger out connector on a compatible component Toggling the connected component between on and standby will toggle the N233H into and out of standby Connect the other remote turn on jack on the N233H to the trigger in connector on a compatible power amplifier The N233H will pass DC signals along to the connected power amplifier creating a daisy chain of trigger control Note The N233H must be powered on with the ac mains relay switch to respond to remote trigger commands Making Link Connections Caution Linking Linking is available for all Mark Levinson components that offer Link or ink communication ports including master slave in slave out Link Link input and Link control 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 N933H offers two Link communication ports labeled slave in and slave out The slave in communication port can be connected to a compatible Mark Levinson preamplifier that offers Link or Link communication ports The slave out communication port can be connected to a compatible Mark Levinson
25. nt at the input If not the fault condition is pres ent at the output 6 If all else fails e Power cycle the N233H with the rear panel ac mains relay switch waiting at least 10 seconds between powering the N 33H off and on e Contact an authorized Mark Levinson dealer 22 Caution Care amp Maintenance To remove dust from the cabinet of your N933H use a feather duster or a lint free soft cloth To remove dirt and fingerprints 1 Dampen a soft lint free cloth with isopropyl alcohol then lightly clean the surface of the unit with the cloth moving with the grain of the anodized brushed aluminum Do not use excessive amounts of alcohol that could drip off the cloth and into the unit 2 Following the cleaning with alcohol dampen a clean cloth with water and wipe over the surface you just cleaned with alcohol This removes the alcohol residue Never apply liquid cleaners directly to the N233H The direct application of liquids can result in damage to electronic compo nents inside the unit Specifications The correlation between published specifications and performance is unreliable Measurements of your amplifier yield excellent results by any standards However only those specifications that apply to its actual operation are included here All specifications are subject to change at any time Rated power output e 34 6 Vrms 150 W 8Q e 34 6 Vrms 300 W 4Q All of the above power ratings were
26. or performance from the first time it is powered on this performance will continue to improve as various components break in You should notice the greatest performance improvements within the first 25 to 50 hours of use The amplifier should continue to improve in sound quality for approximately 300 hours After this initial period performance will remain consistent unless power is disconnected allowing the amplifier to cool down Power is considered disconnected when the N933H is powered off with the rear panel ac mains relay switch or the power cord is disconnected from the electrical outlet or an extended power fail ure or power outage occurs Power is not disconnected when the N233H isin standby When power is returned the N933H will require a brief warm up period of about 2 minutes before the amplifier sound quality is at its best You will never have to repeat the full 300 hour break in period The N933H should be unplugged during lightning storms and extended periods of non use Otherwise it is designed for continuous operation For best performance make sure the power cord is con nected to an electrical outlet at all times During normal opera tion do not use the rear panel ac mains relay switch to power off the N933H Instead use the standby button to place the N933H into standby which allows the power amplifier to remain warmed up to deliver optimal performance at all times Massive Power Supply AC Power Re
27. port on another power amplifier Up to six power amplifiers can be included in a slave chain using daisy chain slave in Link input to slave out Link control communication port connections The slave out Link control communication port on the last power amplifier is not connected Refer to the table above and to the illustration on the next page for additional assistance 18 Oo N 320S Preamplifier Step A Connect the HZ slave out communication port on the preamplifier to the slave in communication port on the first N 33H O N 33H Monaural Amplifier Step B Connect the slave out communication port on the first N 33H to the slave in communication port on the second N233H O N 33H Monaural Amplifier Step C Connect the slave out communication port on the second N933H to the slave in communication port on a third power amplifier This step can be repeated to include up to six power amplifiers in the slave chain slave out slave in 3 When Link connections have been made power on linked components ONE AT A TIME in the order specified below Allow each component to complete its initialization sequence before proceeding to the next component Digital Transports B Digital Audio Processors C Preamplifier D Power Amplifiers begin with the first power amplifier in the slave chain At this point the front panel standby LEDs on all linked components should be blinking in unison
28. r failure 20 Danger Troubleshooting Incorrect operation is sometimes mistaken for malfunction If problems occur refer to this troubleshooting section If problems persist contact your Mark Levinson dealer 1 No audio and the front panel indicator LED is not lit Examine ac mains connections to ensure the power cord is connected to the electrical outlet Make sure the N933H is powered on with the rear panel power switch Examine the electrical circuit breaker to ensure that power is supplied to the electrical outlet to which the N933H is connected A power loss or power outage may have occurred In this case power cycle the N233H with the power switch waiting at least 10 seconds between powering the N233H off and on A fuse may be blown inside the N233H In this case disconnect the power cord from the electrical outlet Then contact an authorized Mark Levinson dealer Do not attempt to replace the fuse There are no user serviceable parts within the N933H Potentially lethal voltages and current capabilities exist within the N 33H even when the power is cord disconnected from the electrical outlet DO NOT attempt to open the amplifiers cabinet There are no user serviceable parts inside the amplifier Refer all servicing to an authorized Mark Levinson dealer 2 No audio and the front panel indicator LED is dimly lit A power loss or power outage may have occurred In this case power cycle the N933H with t
29. rposes Be advised that different operating voltages may require the use of different power cords and or attachment plugs Contact an authorized Mark Levinson dealer for assistance Your Mark Levinson N233H Monaural Power Amplifier is charac terized by its remarkable ability to pass a musical signal with utter integrity regardless of how demanding that signal and the loud speakers used might be When called upon to do so the N933H is capable of generating truly prodigious power levels into almost any speaker load on either an instantaneous or a continuous basis Depending on the demands placed on the N233H by your loud speaker and your listening habits it is possible for the quality and current capability of your electrical service to become the limiting factor in the performance of your system In this case consider installing a dedicated AC circuit for your amplifiers Contact a licensed electrician for assistance If more than one AC circuit is providing power to the system contact a licensed electrician to ensure that all components are operating with the same solid low impedance ground reference Warm up amp Break in Period Continuous Operation Note Building regulations and electrical codes differ from location to location making it impossible to anticipate the require ments of high current AC circuits such as the N933H Contact a local licensed electrician for information Although the N233H delivers superi
30. the power cord Dangerous voltages and current capabilities exist within the NS33H even when the power cord is unplugged There are no user serviceable parts inside the amplifier Refer all servicing to an authorized Mark Levinson dealer 12 2 ac mains relay switch The AC mains switch turns the amplifier completely off by disconnecting the supervisory power supply from the AC mains Since this small supervisory supply controls the main power supply access to AC power shutting down the supervi sory power supply also disconnects the main supply from AC balanced input Receives balanced audio input from the associated preamplifier One XLR connector is available For best performance use balanced connections whenever possible Refer to the illustration below and to the associated preamplifier documentation to ensure that N 33H XLR input pin assignments correspond to the associated preamplifier XLR output pin assignments If not wire the cable so that the appropriate input pin connects to the appropriate output pin Pin 1 Signal ground Pin 2 Signal non inverting Pin 3 Signal inverting Connector ground lug chassis ground Note Before making balanced connections remove the U shaped shorting strap between pins 1 and 3 on the N233H XLR input and save it for possible future use This shorting strap is installed when the N933H is shipped single ended input Receives unbalanced audio input from a prea
31. tive binding posts on the N933H to positive inputs on the associated loudspeaker e Connect the negative binding posts on the N933H to negative inputs on the associated loudspeaker DO NOT OVERTIGHTEN the N233H binding posts Tight high contact pressure connections can be achieved with fingertight ening DO NOT FORCE the NS33H binding post wings up and over a bent or oversized connector Doing so may result in binding post damage If the connector obstructs wing turning slide it into place when the binding post opening provides a snug fit Then use quarter turns to tighten the connection as needed 14 6 slave in amp slave out communication ports Provide links to compatible Mark Levinson preamplifiers and power amplifiers allowing the N233H and linked preamplifiers or power amplifiers to share Link controls Two 6 pin modular RJ 11 jacks labeled slave in and slave out are available The slave in communication port can be connected to a compatible Mark Levinson preamplifier that offers Link or Link communication ports The slave out communication ports can be connected to a compatible Mark Levinson power amplifier that offers Link or 42 communication ports Note Refer to Linking BEFORE linking the N233H to other Mark Levinson components remote turn on jacks Provide DC trigger control One 1 8 inch 3 5mm mini jack is available to receive 5 12V DC signals from a connected compo
32. use harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures e Reorient or relocate the receiving antenna e Increase the separation between the equipment and the receiver e Connect the equipment into an outlet on a circuit different from that to which the receiver is connected e 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 could void the user authority to operate the equipment Canada This Class B digital apparatus complies with Canadian ICES 003 Cet appareil num rique de la classe B est conforme a la norme NMB 003 du Canada aches eVINSOM MADRIGAL AUDIO LABORATORIES 3 Oak Park Bedford MA 01730 1413 USA Mark Levinson and the Mark Levinson logo are registered trademarks Telephone 781 280 0300 of Harman International Industries U S patent numbers and other Fax 781 280 0490 worldwide patents issued and pending www marklevinson com Madrigal Audio Laboratories and the Madrigal Audio Laboratories Customer Service logo are registered trademarks of Harman International Industries Telephone 781 280 0300 U S patent numbers and other worldwide patents issued and pending Sales Fax 781 280 0495 Service Fax 781 2
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