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I. INTRODUCTION
The Shure Model C/PEK-3 Phonograph Evaluation Kit is designed for use with
stereo magnetic phonograph cartridges. The C/PEK-3 may also be used to test
the stereo capabilities of discrete quadriphonic phonograph cartridges. Note
that (1) the quadriphonic properties of these cartridges must be evaluated
through listening tests, and (2) stylus wear may be more critical in discrete quad-
riphonic cartridges; moderate wear that yields acceptable stereo playback may
seriously affect discrete quadriphonic playback.
II. EQUIPMENT CHECKLIST
The following equipment is necessary for the C/PEK-3:
A. C/PEK-3 Stereo Cartridge Analyzer.
B. Good quality microscope (with side or ring illumination).
C. Reference turntable with tone arm (preferably SME) and high quality Shure
phono cartridge.
D. Oscilloscope with at least 150 mV/cm sensitivity.
E. Stereo amplifier with magnetic phono inputs and a pair of quality speakers.
F. At least two copies of the Shure TTR-103 and one of the TTR-109.
I
TO OSCILLOSCOPE
Q
e
LEFT
u l l ! 1
RIGHT
LO
HIGH
M I 0
OUT A
ADD
IN
0
-ZODB
Q
e
e
e
INPUT A
POWER
0
ON
0
8
LEFT
RIGHT
GND.
OFF
tB
METER
ZERO
LEVEL
d
111
120
VAC
Fig. 1
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