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C22 OWNER'S MANUAL
INTRODUCTION
The C22 Commemorative issue preamplifier
and owner's manual are faithful reproductions
of the original, produced from 1963 through 1968.
A few changes were made to the original
preamplifier design to reflect technology ad
vances and contemporary system requirements.
Signal switching has been updated to Elec
tromagnetic switches. Close tolerance film
resistors and polypropylene capacitors add
precision to equalizer, filter and tone control cir
cuits. The tube complement retains the reliable
12AX7A for the amplifying stages. The cathode
follower output stages are changed to 12AT7's
to allow more current output to drive lower im
pedance loads. Balanced audio outputs are
added to take advantage of the greater noise
reduction capabilities of Balanced cables. A
built-in headphone amplifier provides head
phone listening.
This preamplifier is dedicated in remem
brance of the late Frank H. Mcintosh, founder
of Mcintosh Laboratory and co-inventor of the
Mcintosh Unity Coupled output circuit, which
provided the foundation for the forming of the
company. Mr. Mcintosh was president of Mcin
tosh Laboratory, Inc. from its inception in 1949
until his retirement in 1977.
GENERAL DESCRIPTION
The Mcintosh C22 Stereophonic Preamplifier
is a control center for any sterophonic sound
system. To increase your enjoyment of stereo
music, this control center does four jobs with
great precision.
First, The control center amplifies weak elec
trical impulses. Phono signals are amplified
1000 times, while high level signals are amplified
10 times. As a record rotates on the turntable,
undulations in the grooves move the pickup
stylus approximately one thousandth of an
inch, in any direction, from the rest position.
From this slight mechanical movement, the
pickup stylus generates a weak electrical im
pulse on the order of a few thoudsandths of a
volt. To amplify and preserve the information in
such a small electrical impulse, the finest
amplifier performance is required.
Second, Every sound system is used in a dif
ferent environment. The tone balance of the
music is affected by variations in the environ
ment. Also, people listening to the music have
varying ideas of correct tone balance. To com
pensate for these conditions, a high-quality tone
control center is needed.
Third, All stereophonic and monophonic phono
records, both domestic and foreign, are record
ed with specific frequency equalization. The
control center must accurately compensate for
this equalization introduced in the recording
process.
Fourth, programs can originate from several
sources such as tuners, records, tape recorders,
CD players, etc. A control center is needed to
select and switch these sources separately, or
in combination.
All these jobs are performed with excellence
by the C22.
Once you have enjoyed the outstanding per
formance of the C22, you will understand why
Mcintosh products have earned their reputation
as "THE BEST". Your Mcintosh C22 Stereo
phonic Control Preamplifier will give you years
of the finest possible performance, and will
become a highly valued part of your home music
system.
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