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The transcription
of disc recording by radio stations, principally
the 16-inch variety type records were more often
than not, had the second side recorded inside out;
it is so that the equalization alterations became
less perceptible, as in "bass and treble", these
changes were predominant with deteriorating treble
response, but as the needle makes its way outward
from the centre, which was for most occasions obvious
on these early records. However, the frequency pitches
are not distinguishable to the human ear on modern
stereo players. Acetates are records is more or
less often recorded at 78-rpm, and are, in general,
10 inches in size, recorded on primal disc recorders
which had been on widespread sale during the 1940's.
These records are of aluminium metal base coated
with black lacquer and the recording stylus scores
the groove while recording.
Most
recorders had a steady pitch feed screw, which moved
the arm containing the recording stylus across the
record at a uniform rate. RCA Victor took to marketing
these records at a lower price than usual until
1944, when they smashed the label's printing plates
and destroyed the label stock. Nonetheless, since
the groove moved the recording stylus instead of
a feed screw, it only made a small imprint on the
groove wall. The frequency response had been reported
to have been exceptionally narrow at between 2 kHz
and 2.1 kHz frequency. Note: In the sound system
world of Jamaica these Acetate recording are known
as dub-plates, and the Jamaican dub-plates are expensive
due to the fact that they are made for a special
purpose. In the sound system world of Jamaica a
dub plate (acetate record) is made specially made
one off for sound competition challenge.
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