INTRODUCTION
THANK YOU!...
for choosing the Manley LAB SERIES STEREO 75 + 75 watt Amplifier. Designed by David Manley,
the Manley LAB SERIES STEREO 75 + 75 watt Amplifier uses only the best available components,
with the shortest and cleanest signal path possible.
The circuit and the components used have been chosen carefully after years of development and
refinement for reliability, constancy and most importanly, musical, accurate, and emotional delivery of
the sound. The circuit topology is similar to other designs in the MANLEY range. We emphasize big
beefy resevoir capacitors in the high voltage supplies giving plenty of instant energy for dynamic
performance of transient peaks and bass performance which often exceeds that of rival solid-state
amplifiers. We run high voltages on the plates of the output tubes and are thus able to run them at lower
current which will result in longer life for the output tubes. Each output tube has its own bias adjust,
and the procedure for adjusting each tube's current draw is described in this manual.
GENERAL NOTES
LOCATION & VENTILATION
The Manley LAB SERIES STEREO 75 + 75 watt Amplifier must be installed in a stable location with
ample ventilation. Allow a minimum of 2 inches of clearance on the top and sides of the amplifiers,
such that a constant flow of air can flow. Do not place amplifiers directly on high pile carpet or any
other surface that will block the ventilation vents underneath the amplifiers. If you have small children
or pets, you should consider placing the amplifiers out of reach to prevent damage to the amplifier or
damage to your small children or pets by the amplifier as the tubes do get hot during operation.
WATER & MOISTURE
As with any electrical equipment, these amplifiers should not be used near water or moisture.
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
SPECIAL NOTES
Tubes may become loose during transit. Straighten and press down each tube before plugging the
amplifier into the mains socket. Furthermore, do not touch the tubes after the amplifier has been
switched on, as the tubes become very hot during operation and should only be handled after the power
has been turned off and the tubes have cooled.
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.
Thank you again, and please enjoy!
