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Madrigal Audio Laboratories, Inc.

Operating Manual

Mark Levinson

®

Nº 333

Nº 332

Nº 331

Dual Monaural

Power Amplifiers

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Summary of Contents for N 331

Page 1: ...Madrigal Audio Laboratories Inc Operating Manual Mark Levinson N 333 N 332 N 33 1 Dual Monaural Power Amplifiers...

Page 2: ...en closure that may be of sufficient magnitude to constitute a risk of electric shock to per sons The exclamation point within an equilateral triangle is intended to alert the user to the presence of...

Page 3: ...use flammable or combustible chemicals for cleaning audio components 5 NEVER operate this product with any covers removed 6 NEVER wet the inside of this product with any liquid 7 NEVER pour or spill l...

Page 4: ...4...

Page 5: ...er Supply 12 Balanced design 12 True Voltage Source 12 Adaptive Biasing of the Output Stage 13 Extensive Protection 13 Front Panel 15 Rear Panel 16 Remote turn on tip polarity 18 Bridged Operation 22...

Page 6: ...power amplifier keep all packing materials for future transport In the event that you need to ship your amplifier only the original purpose designed shipping carton is acceptable Any other method of...

Page 7: ...AC mains Note that under these conditions the amplifier cannot respond to remote turn on commands etc Ventilation As a freestanding unit your power amplifier normally has no problem with venti lation...

Page 8: ...even from one municipality to the next For this reason it is impossible for us to anticipate the requirements of your area with regard to high current AC hookups If you plan to install a dedicated hi...

Page 9: ...extremely difficult loads we recommend installing a dedicated AC line for the amplifier with 30 ampere capability The operating voltage of the N 333 cannot be changed by the user and any at tempt to...

Page 10: ...your home entertainment sys tem For compatibility with existing household outlets a standard three conductor 15 ampere IEC standard detachable AC mains cable is provided for use with your amplifier M...

Page 11: ...mely unlikely to be encountered in normal use The power demands that a single amplifier might conceivably make when being used to reproduce music with actual loudspeakers are substantially lower Still...

Page 12: ...ting uniformly low power supply impedance seen by the various circuits within the amplifier lays the foundation for both the massive power and the extraordinary finesse that characterizes the 300 seri...

Page 13: ...al of poorly informed discussion of class A operation over the years Unfortunately the ther mal management problems of true class A operation in a high current output stage are severe and introduce se...

Page 14: ...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...

Page 15: ...all times To turn the amplifier off as opposed to standby press and hold the standby button for approximately one second until the front panel indica tor light turns off To turn off even the superviso...

Page 16: ...of the XLR inputs which were placed there prior to shipment from the factory Save them for possible use at a later date should you want to listen to a friend s single ended cable for example The pin a...

Page 17: ...to their slave in port up to a maximum of six amplifiers total to support multi amped systems for example communication ports remote tur n on jacks slave out slave in A straight through six conductor...

Page 18: ...e Mark Levinson Communications Link described above These 1 8 3 5 mm mini jacks allow other components to bring the power amplifier in and out of standby Two such mini jacks are provided to allow dais...

Page 19: ...positive or red input terminal of the appropriate loudspeaker If biwiring repeat using the other positive or red output post of the amplifier and the positive or red input terminal of the loudspeaker...

Page 20: ...s switch is lo cated adjacent to the power cord on the rear panel of the amplifier This switch may be used to disconnect the supervisory power supply from the AC mains without having to actually unplu...

Page 21: ...our 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 Danger Potentially dangerous vo...

Page 22: ...or higher that have a greater need for voltage than for current It is not recommended for loudspeakers that have an impedance significantly be low 4 as the speaker s impedance is split by the two halv...

Page 23: ...eference 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...

Page 24: ...n practice the most important thing is to be con sistent throughout the system as inconsistency will result in out of phase loudspeakers In turn this results in unstable imaging and poor bass repro du...

Page 25: ...cuit that includes the loud speakers Important Do not attempt to operate your amplifier in a bridged mode without first strapping the black output terminals together Failure to establish a common grou...

Page 26: ...26 Single Ended Bridged Input Connection...

Page 27: ...ic to the loudspeaker in question In general however biamping is done in one of two ways active biamplification or passive biamplification Active biamping refers to the presence of an active electroni...

Page 28: ...28 Passive biamping wiring diagram...

Page 29: ...a soft cloth Dampen the cloth with alcohol first and then lightly clean the surface of the amplifier with the cloth Do not use excessive amounts of alcohol that might drip off the cloth and into the...

Page 30: ...luation Return authorization must first be obtained by either calling or writing the factory prior to shipping the component The factory will pay for return shipping charges only in the event that the...

Page 31: ...and the Madrigal Technical Services Department locate and repair the difficulty as quickly as possible A copy of the original bill of sale will serve to verify warranty status Please in clude it with...

Page 32: ...tput 130 mV all models Input sensitivity full output 2 25V for N 333 1 80V for N 332 1 30V for N 331 Power consumption N 333 350W 5 at idle 200W 5 in standby Power consumption N 332 325W 5 at idle 200...

Page 33: ...33 DUAL MONAURAL POWER AMPLIFIER 3 86 9 8 cm 9 85 25 cm 3 86 9 8 cm 0 425 1 1 cm 9 0 22 9 cm 0 425 1 1 cm 0 45 1 14 17 56 44 6 cm 18 85 47 88 cm 0 257 6 53mm 3 825 9 72cm 9 91 25 17cm 1 22 3 1cm 3 825...

Page 34: ..._________________________________ _________________________________________________________________ _________________________________________________________________ __________________________________...

Page 35: ...IES R N 331 DUAL MONAURAL POWER AMPLIFIER 3 86 9 8 cm 9 85 25 cm 3 86 9 8 cm 9 0 22 9 cm 0 31 78 cm 17 56 44 6 cm 14 36 36 47 cm 18 85 47 88 cm 0 257 6 53mm 3 825 9 72cm 9 91 25 17cm 1 22 3 1cm 3 825...

Page 36: ..._____________________________________________________________ _________________________________________________________________ _________________________________________________________________ ______...

Page 37: ...37...

Page 38: ...is a registered trademark of Madrigal Audio Laboratories Inc a Harman International company MADRIGAL AUDIO LABORATORIES R Madrigal Audio Laboratories Inc 2081 South Main Street P O Box 781 Middletown...

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