Shure V15 Type IV SUPER TRACK IV User Manual page 5

Coping with "hot" recorded
signals
...
The "hot" signal problem
The stylus cannot track the hea\ily modulated signals found on
Inany of the newest records
Its symptoms
The stylus mistracks and produces
dlstort~on and buzzlng sounds. While mistracking can occur at any
frequency. extreme mistracking occurs most at high frequencies.
Extreme mistracking can ineparably damage the record groove.
The Super Track
IVTM
total design solution
The
V15
Type
IV
has a new stylus assembly designed fnr dramati-
cally increased trackahility as t h r result of two significant im-
provements
A. The effective stylus mass of the conventional moving system has
hrrn lotvered hv utilizine
a telescooed shank structure
(No
1
in
figure at lefty and a
&w iightwkight high-energy
magnet
[No.
2 1
The reduced effective mass of the new structure helps
improve trackability in the critical mid-and high-hquencies.
B.
Incorporating a newly designed two-function bearing sys-
tem (No.
3)
has bypassed prex<ously necessary design com-
promises. The new bearing system is independently optimized
for low frequencies and for high frequencies so that trackability
is enhanced across the entire audio spectrum.
The V15 Type N has a
Hyperelliptical nude diamond tip
[No
4)
that results in an elongated tip-groove contact area The ne\v tip
provides as much as a 25% reduction in distortion over a conven-
tional biradial (elliptical) stylus"
"See graph on Page Nine