Manley LANGEVIN DUAL User manual

MANLEY
LABORATORIES, INC.
OWNER'SMANUAL
LANGEVIN
150 WATT
DUALMONOBLOCK
AMPLIFIER
MANUFACTUREDBY:
MANLEY LABORATORIES, INC.
13880MAGNOLIAAVE.
CHINO, CA. 91710
TEL [phone]
FAX: [phone]

CONTENTS
INTRODUCTION 3
MAINS CONNECTIONS 4
CONNECTING YOUR AMPLIFIER 5
REAR PANEL 6
OPERATIONAL NOTES 7
SPECIFICATIONS 8
WARRANTY 9
WARRANTY REGISTRATION 10
NOTES 11
SECTION PAGE

INTRODUCTION
!
THANK YOU!...
for choosing Manley Laboratories' Langevin 150 Watt Solid State Amplifier. Designed around the
concept that less is more, the Langevin 150 Watt Solid State Amplifier uses the best available parts
with the shortest, cleanest, signal path possible. With the use of our own C.N.C. milling machine,
we can provide you with a superb sounding machine with elegant packaging. Please take a few
moments to read through this manual, there may be features and information about this amplifier that
you do not know, and it is in your best interest to do so.
Thank you again, and please enjoy!
GENERAL NOTES
LOCATION&VENTILATION
The Langevin 150 Watt Solid State Amplifier must be installed in a stable location with ample
ventilation. The unit is designed as a standard 2 u rack mount unit. Be certain to allow for ample
ventilation around the unit. Do not place directly above other rack mount equipment that dissipates
a significant amound of heat. We also recommend that the amplifier if driven by a preamplifier be
placed at least 10 inches apart. Do not place amplifiers directly on high pile carpet or any other
surface that will prevent proper ventilation.
WATER & MOISTURE
As with any electrical equipment, this amplifier should not be used near water or moisture. If liquid
enters the amplifier, it must be immediately returned to your dealer for servicing.
SERVICING
The user should not attempt to service the amplifier beyond that described in the owner's manual.
Refer all servicing other than biasing and tube replacement to Manley Laboratories
WARNING!
TO PREVENT THE RISK OF ELECTRIC SHOCK
DO NOT OPEN THE CABINET
REFER SERVICING TO
QUALIFIED PERSONEL

MAINS CONNECTIONS
Your amplifier has been factory set to the correct mains voltage for your country. The voltage setting
is marked on the serial badge, located on the rear panel. Check that this complies with your local
supply.
Exportunitsforcertainmarketshaveamouldedmainsplugfittedto comply with local requirements.
If your unit does not have a plug fitted the coloured wires should be connected to the appropriate plug
terminalsinaccordancewith thefollowingcode.
GREEN/YELLOW EARTH terminal
BLUE NEUTRAL terminal
BROWN LIVE terminal
As the colours of the wires in the mains lead may not correspond with the coloured marking identifying
theterminals in your plug proceed as follows;
ThewirewhichiscolouredGREEN/YELLOW mustbe connectedto theterminal inthe plugwhich is
markedby the letter E or bythesafety earth symbol or coloured GREENorGREENand YELLOW.
The wire which is coloured BLUE must be connected to the terminal in the plug which is marked by
theletterNorcolouredBLACK.
The wire which is coloured BROWN must be connected to the terminal in the plug which is marked by
theletterLor colouredRED.
DONOTCONNECT/SWITCHONTHEMAINSSUPPLYUNTILALLOTHERCONNEC-
TIONS HAVE BEEN MADE.
The Manley Laboratories' Langevin 150 Watt Solid State Amplifier requires a significant amount of
AC current to operate properly. For best operation, plug the amplifier directly into the wall outlet,
avoiding extension cords and other devices which restrict the current supply to amplifier. If
extension cables are required, be certain that they are high quality, heavy duty (14-12 guage) cables.

CONNECTING YOUR AMPLIFIER
Settingupyour amplifier is rather easy.
1. Connect all source components (turntable, CD, Tuner, Tape DAT, etc.)to your preamplifier.
2. Connectthe interconnects from the output of the preamplifier orswitching center to RCA
input.
3. Connect the hot or "+" speaker cable to the top binding post and the common or "-" speaker
cable to the bottom binding post (See diagarm III). Ensure that the other end of the cable is
connected correctly to the speaker. Tighten the binding posts by hand. NEVER SHORT
CIRCUIT THE OUTPUT CONNECTORS!!!
4. Turn on Preamplifier and any source components you plan to use.
5. Ensure that the "mains" switch on the front panel is in the "off" or "0" position.
6. Plugamplifierintowalloutlet.
7. Turn on amplifiers and enjoy.

REARPANEL
AIEC MAINS CONNECTOR Standard mains connector. Connect an IEC
mains cable to a 50/60 Hz AC receptacle.
B MAINS FUSE Use a 3 amp (110, 120 mains voltage) or a 2 amp (220, 240
voltage) SLO-BLO fuse.
C GROUND BINDING POSTS Use to connect Chassis ground (Black) to
Circuit Ground (Green)
D RAIL FUSES Use only a 5 Amp FAST BLOW fuse in each voltage rail.
E OUTPUT BINDING POST (-) Negative or common speaker terminal
binding post.
F OUTPUT BINDING POST (+) Positive or hot speaker terminal binding
post.
G INPUT RCA Input signal connector.

OPERATIONAL NOTES
SWITCHING ON
With monoblocks we suggest that you turn on one amplifier first allowing about thirty seconds
to pass before powering the other. Also, ALWAYS turn ON your preamplifier or console
FIRST and let this settle before turning on the amplifiers.
RUNNING
It is not recommended that you leave your amplifier permanently switched on. This only
wastes electricity. Your amplifier uses all solid state components and reaches peak operating
condition in approximately 30 minutes.
PROTECTION CIRCUITRY
As with all solid state amplifiers it is very important to NEVER short the output terminals of the
amplifier or to drive the amplifier with a very low load. Never drive the amplifier into less
than a 2 Ohm load. Each channel is equipped with rail fuses which should blow open in the
case of a short circuit. The amplifier is also equipped with voltage-current limiting protection
circuitry to prevent damaging the amplifier or speakers.

SPECIFICATIONS
OutputPower
20 Hz - 20 KHz, 8 Ohm Load 130 Watts .15% T.H.D.
4 Ohm Load 225 Watts .15% T.H.D.
Input Sensitivity 1 Volt
Input Impedance 49 Kohm
Output Impedance < 1 Ohm
Power Consumption 50 W Quiescent
360 W Peak (4 ohm)
250 W Peak (8 ohm)
Mains Fuse 100, 110, 120V = 5A (Slo-Blo)
220, 240 V = 3A (Slo-Blo)
Dimensions (Each channel) W=9.5, D=12.7, H=3.50 inches
Weight (Each channel) 20 lbs.

WARRANTY
AllManleyLaboratories equipment iscoveredbyalimitedwarrantyagainstdefectsinmaterials
andworkmanshipforaperiodof90daysfromdateofpurchasetotheoriginalpurchaseronly.A
furtheroptionallimited5yearwarrantyisavailabletotheoriginalpurchaseruponproper
registrationofownershipwithin30daysofdateoffirstpurchase.
Properregistrationismadebyfillingoutandreturningtothefactorythewarrantycardattachedto
thisgeneralwarrantystatement,alongwithacopyoftheoriginalsalesreceiptasproofofthe
originaldateofpurchase.Only1cardisissuedwitheachunit,andtheserialnumberisalready
recordedonit.
Ifthewarrantyregistrationcardhasalreadybeenremovedthenthisisnotanewunit,andis
thereforenotwarrantedbythefactory.Ifyoubelievethistobeanewunitthenpleasecontactthe
factorywiththedetailsofpurchase.
Thiswarrantyisprovidedbythedealerwheretheunitwaspurchased,andbyManleyLaboratories,
Inc. Underthetermsofthewarrantydefectivepartswillberepairedorreplacedwithoutcharge,
exceptingthecostoftubes.Nowarrantyisofferedontubes,unless:
1.aManleyLaboratoriespreamplifierisusedwithaManleyLaboratories amplifier,and
2.thewarrantyregistrationcardisfilledout.
Insuchacasea6monthwarrantyontubesisavailablewiththecorrectrecordingoftheserial
numberofthepreamplifieronyourwarrantyregistrationcard.
IfaManleyLaboratories productfailstomeettheabovewarranty,thenthepurchaser'ssole
remedyshallbetoreturntheproducttoManleyLaboratories,wherethedefectwillberepaired
withoutchargeforpartsandlabour.Theproductwillthenbereturnedviaprepaid,insuredfreight,
methodandcarriertobedeterminedsolelybyManleyLaboratories.Allreturnstothefactorymust
beintheoriginalpacking,(newpackingwillbesuppliedfornochargeifneeded),accompaniedby
awrittendescriptionofthedefect,andmustbeshippedtoManleyLaboratoriesviainsuredfreight
atthecustomer'sownexpense.Chargesforunauthorizedserviceandtransportationcostsarenot
reimbursableunderthiswarranty,andallwarrantees,expressorimplied,becomenullandvoid
wheretheproducthasbeendamagedbymisuse,accident,neglect,modification,tamperingor
unauthorizedalterationbyanyoneotherthanManleyLaboratories.
Thewarrantorassumesnoliabilityforpropertydamageoranyotherincidentalorconsequental
damagewhatsoeverwhichmayresultfromfailureofthisproduct.Anyandallwarranteesof
merchantabilityandfitnessimpliedbylawarelimitedtothedurationoftheexpressedwarranty.
AllwarranteesapplyonlytoManleyLaboratoriesproductspurchasedandusedintheUSA.
Somestatesdonotallowlimitationsonhowlonganimpliedwarrantylasts,sotheabove
limitationsmaynotapplytoyou.Somestatesdonotallowtheexclusionorlimitationofincidental
orconsequentialdamges,sotheaboveexclusionmaynotapplytoyou.
Thiswarrantygivesyouspecificlegalrightsandyoumayalsohaveotherrightswhichvaryfrom
state to state.

WARRANTYREGISTRATION
We ask that you please fill out this registration form and send the bottom half to:
MANLEY LABORATORIES
REGISTRATION DEPARTMENT
13880 MAGNOLIA AVE.
CHINO CA, 91710
Registration entitles you to product support, full warranty benefits, and notice of product
enhancements and upgrades. You MUST complete and return the following to validate your
warranty and registration. Thank you again for choosing to use Manley Laboratories.
MODEL ____________________ SERIAL No. ______________________
PURCHASE DATE ______________ SUPPLIER ______________________
--------------------------------------------------------------------------------------------------------
PLEASE DETACH THIS PORTION AND SEND IT TO MANLEY LABORATORIES
MODEL ____________________ SERIAL No. L150__________________
PURCHASE DATE ______________ SUPPLIER _______________________
NAME OF OWNER _______________________________________________
ADDRESS ______________________________________________________
CITY,STATE,ZIP________________________________________________
TELEPHONE NUMBER ___________________________________________
Serial #'s of Associated Manley Laboratories Equipment ___________________
________________________________________________________________