Mark Levinson No 334 Repair Manual

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Seiko watch serial numbers. The remaining four digits of the serial number indicate the production number for the watch. If your last for digits are 0000 then you have the first watch made for that model reference number. Serial Number: The serial numbers on modern Seiko models are comprised of 6 digits. The first digit indicates the year, the following character the month and the remaining 4 digits a unique production number. The month is listed as 1-9 for January to September, then 0 for October, N for November and D for December.

Levinson 334
Mark Levinson No.334

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Install canon lbp 2900 printer. The manual warns that the No.334 should be 'handled with extreme care to. The amplifier was driven in single-ended mode from a Mark Levinson ML-7A.

SpecificationsDimensionsSpecial Design FeaturesOperating VoltageUnpackingBridged OperationFront PanelRear Panel

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Mark Levinson

Nº 333

Nº 33 1

Power Amplifiers

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Levinson 334

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Summary of Contents for Mark Levinson N 331

Page 1 Operating Manual Mark Levinson ® Nº 333 Nº 332 Nº 33 1 Dual Monaural Power Amplifiers Madrigal Audio Laboratories, Inc.
Page 2 WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE. 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”..
Page 3: Important Safety Instructions
10. NEVER replace any fuse with a value or type other than those specified. 11. NEVER attempt to repair this product. If a problem occurs, contact your Mark Levinson 12. NEVER expose this product to extremely high or low temperatures.
Page 5: Table Of Contents
Table of Contents Unpacking Your Amplifier .. 6 Warm up/break-in period .. 6 Placement Considerations .. 7 Ventilation .. 7 Operating Voltage, Nº333 .. 8 Nº 333 AC mains maximum current requirements .. 8 Nº 333 rear-panel label .. 9 Operating Voltage, Nº332 &..
Page 6: Unpacking Your Amplifier
. At least two strong people are required to unpack these amplifiers safely. Included with your new Mark Levinson amplifier is two pairs of knit, white gloves designed to assist you in the initial unpacking and placement of your new purchase.
Page 7: Placement Considerations
For your protection, review “Important Safety Instructions” and “Operating Voltage” before you install your amplifier. Y our Mark Levinson 300-series power amplifier is specifically designed to stand on the floor, and must be used as a freestanding unit. In most installations, locat- ing it near the loudspeakers is best.
Page 8: Operating Voltage, Nº333
The Mark Levinson Nº 333 amplifiers may be factory-set for 100V , 120V , 200V , 210V , 220V , 230V or 240V AC mains operation at either 50 or 60Hz, based on the country for which they are manufactured.
Page 9: Nº 333 Rear-panel Label
. If you need to change the operating volt- age of your Nº 333 power amplifiers, or if the voltage indicated on the rear panel label is not available in your area, contact your Mark Levinson dealer for assis- tance.
Page 10: Operating Voltage, Nº332 & Nº331
IEC-standard, detachable AC mains cable is provided for use with your amplifier. Mark Levinson power amplifiers may be factory-set for 100V, 120V , 200V, 210V , 220V , 230V or 240V AC mains operation at either 50 or 60Hz, based on the coun- try for which they are manufactured.
Page 11: Nº 33 1 Ac Mains Maximum Current Requirements
. If you need to change the operating volt- age of your power amplifiers, or if the voltage indicated on the rear panel label is not available in your area, contact your Mark Levinson dealer for assistance. Nº 332/33 1 rear-panel label..
Page 12: Special Design Features
True Voltage Source Special Design Features Congratulations on your purchase of a Mark Levinson Nº 300-series Dual Monau- ral Power Amplifier. While your new amplifier is straightforward in its everyday use, it includes several design features which are responsible for its outstanding performance.
Page 13: Adaptive Biasing Of The Output Stage
test of the Nº333 at maximum power requires about 45 amperes at 120V. (The laws of physics refuse to be cheated. Long-term, you cannot deliver more power into the speaker than you can pull from the wall.) Thirty-two TO-3 output transistors are distributed in the heatsinks of the Nº 333 to conduct and control the flow of its remarkable power capabilities to the loud- speaker.
Page 14 In addition, the AC input to each transformer is fused to protect against excessive current conditions such as driving shorted outputs. Inrush limiting prevents pre- mature aging of power supply components during power-up, and switches off- line once the power supply has been charged. Finally , your amplifier incorporates a controlled clipping circuit that prevents the output devices from saturating.
Page 15: Front Panel
Front Panel STANDBY BUTTON When power is first applied to the power amplifier (if yours is a CE-certi- fied unit, this means plugging it in and turning on the ), the amplifier remains switch will bring the amplifier from allow the power supplies to charge and all circuitry to stabilize), subse- quent pressing of the standby mode and fully..
Page 16: Rear Panel
Audio Engineering Society . Refer to the operating manual of your balanced- output preamplifier to verify that the pin assignments of its output connec- tors correspond to your Mark Levinson amplifier. If not, wire the cables so that the appropriate output pin connects to the equivalent input pin.
Page 17 SINGLE-ENDED INPUTS These RCA connectors accept single-ended inputs from preamplifiers with single-ended (RCA) outputs. Single-ended input signals are converted to balanced signals immediately upon being received at the amplifier, and are handled as balanced signals thereafter. If your preamplifier does not support balanced connection to the power amplifier, connect the single-ended output of your preamplifier to the RCA input on the amplifier.
Page 18: Remote Turn-on Tip Polarity
DC signal (more than one second) will force the amplifier into the fully condition (as does a prolonged press of the front panel but- ton.) Y our Mark Levinson dealer can help you take advantage of these de- sign features to maximize your system’s versatility . Fault Condition..
Page 19 SPEAKER BINDING POSTS The Mark Levinson 300-series amplifiers are equipped with custom made, gold-plated, high-current binding posts for output termination to a loud- speaker system. To take full advantage of the amplifier’s sonic quality, we recommend using high-quality speaker cable; please see your Mark Levinson dealer.
Page 20 (The highest available current rating for an IEC standard three-conductor connector such as is used on most stereo equipment, in- cluding other Mark Levinson products, is 16 amperes.) Instead, the Nº 333 incorporates a high current AC cord which is attached directly to the ampli- fier itself.
Page 21 As a result, if you suspect that your AC fuses have blown, disconnect your amplifier from the AC mains and contact your Mark Levinson dealer for as- sistance. Do not attempt to replace these fuses yourself.
Page 22: Bridged Operation
Balanced Bridging Kit Bridged Operation Y our Mark Levinson amplifier has been designed to be extremely versatile. Should your needs change or grow over time, you may wish to add additional power by one of two means: Bridging, or Biamping. We will discuss bridged op- eration first.
Page 23: Balanced Bridged Input Connection
Failure to establish a common ground reference between the two channels can damage your amplifier by forcing significant currents to flow where they do not belong! To bridge your Mark Levinson amplifier using a balanced input signal, follow these steps: DISCONNECT YOUR AMPLIFIER FROM EVERYTHING Start with your amplifier totally disconnected from inputs, outputs, and AC power.
Page 24: Single-ended Bridging
CONNECT ONE END OF THE BALANCED BRIDGING OUTPUT ADAPTER TO TWO SIDE-BY-SIDE BLACK OUTPUT TERMINALS All Mark Levinson amplifiers have two sets of output terminals per channel, wired in parallel (for convenience when biwiring). You may use either the upper or the lower black output terminals. Connect one end of the Bal-..
Page 25: Single-ended Bridging Kit
This establishs a com- mon reference for the amplifier and completes the circuit that includes the loud- speakers. Important! To bridge your Mark Levinson amplifier using a single-ended (RCA) input signal, follow these steps: Single-Ended Bridging Input Adapter..
Page 26 Adapter. Connect the negative/–/black binding post of your loudspeaker to OUTPUT TERMINALS and secure. sent to the loudspeaker. In practice, the most important thing is to be con- All Mark Levinson amplifiers have two sets of output terminals per channel, wired in parallel (for convenience when biwi sistent throughout..
Page 27: Biamplification
Biamplification In contrast to bridged operation (wherein a two channel amplifier is “fooled” into behaving as a single, larger amplifier), biamplification makes use of a two-channel amplifier to drive different portions of a single loudspeaker. As with bridging, it offers a modular way of increasing the overall performance of your system (if your loudspeakers support biamplification).
Page 28: Passive Biamping Wiring Diagram
Passive biamping wiring diagram Ñ Ñ inputs r e m o t e t u r n - o n j a c k s ~ac mains c o m m u n i c a t i o n p o r t s inputs Ñ..
Page 29: Care & Maintenance
Care & Maintenance To remove dust from the cabinet of your amplifier, use a feather duster or a lint- free soft cloth. To remove dirt and fingerprints, we recommend isopropyl alcohol and a soft cloth. Dampen the cloth with alcohol first and then lightly clean the surface of the amplifier with the cloth.
Page 30: U.s. And Canadian Warranty
Madrigal Audio Laboratories, Inc., P . O. Box 781, Middletown, CT 06457. The extended warranty for this Mark Levinson product is five (5) years from the Five Year Extended Warranty date of purchase.
Page 31: Obtaining Service
We take great pride in our dealers. Experience, dedication, and integrity make these professionals ideally suited to assist with our customers’ service needs. If your Mark Levinson component must be serviced, please contact your dealer. Y our dealer will then decide whether the problem can be remedied locally, or whether to contact Madrigal for further service information or parts, or to obtain a Return Authorization.
Page 32: Specifications
IEC-standard high current AC receptacle (Nº332, Nº331) Output impedance Damping factor For more information, see your Mark Levinson dealer, or contact: Madrigal Audio Laboratories, Inc. P .O. Box 781, 2081 South Main Street, Middletown, CT 06457 USA Telephone (860) 346-0896..
Page 33: Dimensions: Nº 333 & Nº332
Dimensions: Nº 333 & Nº332 3.86' 9.8 cm 0.45' 1.14 8.05' 20.45cm 9.85' 25 cm 3.86' 9.8 cm MADRIGAL AUDIO LABORATORIES Nº 333 DUAL MONAURAL POWER AMPLIFIER 17.56' 44.6 cm 18.85' 47.88 cm 0.257' 6.53mm 17.38' 44.15cm 2.75' 6.99cm 8.05' 21.1cm 0.425'..
Page 34 Dimensions: Nº 333 & Nº332 (cont.) 1.25' 3.16 cm 0.45' 1.14 cm Installation Notes: ___________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ 18.85'..
Page 35: Dimensions: Nº 331
Dimensions: Nº 331 3.86' 9.8 cm 2.23' 5.66 cm 14.36' 36.47 cm 8.05' 20.45cm 9.85' 3.86' 25 cm 9.8 cm MADRIGAL AUDIO LABORATORIES Nº 331 DUAL MONAURAL POWER AMPLIFIER 17.56' 44.6 cm 18.85' 47.88 cm 0.257' 6.53mm 17.38' 44.15cm 2.75' 6.99cm 8.05'..
Page 36 Dimensions: Nº 331 (cont.) 0.45' 1.14 cm 2.23' 5.6 cm Installation Notes: ___________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ 18.85'..
Page 38 Madrigal Audio Laboratories, Inc. 2081 South Main Street, P.O. Box 781 Middletown, Connecticut 06457 USA Telephone: (860) 346-0896 Fax: (860) 346-1540 http://www.madrigal.com/ MADRIGAL AUDIO LABORATORIES is a registered trademark of Madrigal Audio Laboratories, Inc. a Harman International company 630319-2 © 6/1998 Madrigal Audio Laboratories, Inc. All rights reserved. Printed in U.S.A.