Manley Laboratories Langevin pre Owners manual

MANLEY

LABORATORIES, INC.

OWNER'S MANUAL

ALL-DISCRETE LINE

PREAMPLIFIER

CONTENTS

SECTION PAGE

INTRODUCTION 3

MAINS CONNECTIONS 4

FRONT PANEL 5

REAR PANEL 6

OPERATIONAL NOTES 7

WARRANTY 8

WARRANTY REGISTRATION 9

NOTES 10

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INTRODUCTION

THANK YOU!...

for choosing the Manley Laboratories Langevin Line Preamplifier. The Langevin Line
Preamplifier, designed in ALL-DISCRETE CLASS A CIRCUITRY, utilizes only the best modern
componentry, such as conductive plastic potentiometers, military-grade sealed gold contact switches,
and precision 1% metal film resistors. The Langevin Line Preamplifier also contains a fully
regulated power supply and very low noisetransistors in conjunction with short direct signal traces to
provide the cleanest audio signal possible.
Please take a few moments to read through this manual carefully as it contains information essential
to proper operation of this unit.

Thank you again, and please enjoy!

GENERAL NOTES

LOCATION & VENTILATION

The Langevin Line Amplfiier must be installed in a stable location with ample ventilation. It is
recommended, if this unit is rack mounted, that you allow enough clearance on the top and bottom of
the unit such that a constant flow of air can flow through the ventilation vents.

WATER & MOISTURE

As with any electrical equipment, this equipment should not be used near water or moisture. If
liquid enters the preamplifier, it must be immediately returned to your deal for servicing.

SERVICING

The user should not attempt to service this unit beyond that described in the owner's manual. Refer
all servicing to Manley Laboratories.

WARNING!

!

TO PREVENT THE RISK OF ELECTRIC SHOCK

DO NOT OPEN THE CABINET

REFER SERVICING TO

QUALIFIED PERSONEL

MAINS CONNECTIONS

Your unit 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.

Export units for certain markets have a moulded mains plug fitted to comply with local requirements.
If your unit does not have a plug fitted the coloured wires should be connected to the appropriate plug
terminals in accordance with the following code.

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
the terminals in your plug proceed as follows;

The wire which is coloured GREEN/YELLOW must be connected to the terminal in the plug which is
marked by the letter E or by the safety earth symbol or coloured GREEN or GREEN and YELLOW.

The wire which is coloured BLUE must be connected to the terminal in the plug which is marked by
the letter N or coloured BLACK.

The wire which is coloured BROWN must be connected to the terminal in the plug which is marked by
the letter L or coloured RED.

DO NOT CONNECT/SWITCH ON THE MAINS SUPPLY UNTIL ALL OTHER CONNEC­TIONS HAVE BEEN MADE.