Shure V-15 Type III Manual page 7

A graphic representation of the audible spectrum, which illustrates
the uniformly flat response you w i l l achieve with your V-15 Type I l l
cartridge. Under the Shure Quality Control Program, every Type ill
cartridge, whether
i t
is purchased now or next year, in Chicago,
London, Hong Kong, or Sydney, must produce a flat response curve
that fits within the extraordinarily narrow limits of the Type I l l re-
sponse "output envelope" (the unshaded area above). The curve
shown was made by a typical Type Ill, mounted in an SME tone arm,
and tracking the STRIOO test record, response corrected for 6
dB/octave recorded characteristic below 500 Hz.
7