Introduction; General Notes - Manley DUAL MONO Owner's Manual

THANK YOU!...
for choosing the Manley Laboratories Microphone Preamplifier. We use this manual for both the
MONO and DUAL MONO versions. They are identical except the DUAL has two of everything.
These are all-tube Microphone Preamplifiers chock full of nice audiophile parts that combine flat
frequency response, very high headroom, low noise, and low distortion with a big rich beefy sound.
We wind the input and output transformers right here at Manley Labs. The Input Attenuator is
cleverly before the tube stage so that it can easily accomodate any reasonable signal level and
function like a variable pad. There is also a rotary GAIN switch which changes the amount of
negative feedback changing thepreamplifier's operating characteristics, slew rate and speed, (as well
as the gain) to suit a wide variety of tastes and styles. The direct inputs are favourite features of these
designs. There are both balanced and unbalanced outputs so that the preamplifier can interface with
virtually anything without hassle. But you knew all this anyway... which is why you bought it, so,
thank you again, and please enjoy!

GENERAL NOTES

LOCATION & VENTILATION
The Manley Microphone Preamplifier 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 preamp such that a constant flow of air can flow through the ventilation holes.
WATER & MOISTURE
As with any electrical equipment, this preamplifier should not be used near water or moisture. It is
never a good idea to pour a cup of coffee into your micpreamp.
SERVICING
The user should not attempt to service the preamplifier beyond that described in the owner's manual.
Refer all servicing other than tube replacement to Manley Laboratories.
SPECIAL NOTES
Tubes may become loose during transit. Check to see that all the tubes are seated smartly in their
sockets. Please note, the tubes do get very hot during operation and high voltages are present inside
the chassis, so take care if poking your fingers around inside the chassis. The Safety People like us to
put warnings like this in our manual:

INTRODUCTION

WARNING!
TO PREVENT THE RISK OF ELECTRIC SHOCK
DO NOT OPEN THE CABINET
REFER SERVICING TO
QUALIFIED PERSONEL
!
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