Sanyo RD2016 - Page 7

ABOUT METAL TAPE
Where as normal, chrome, ferrochrome and other sound
recording tapes are surface-coated with magnetic powder
of iron oxide, metal tape has the surfaces covered with an
unoxidized alloy whose main ingredient is pure iron.
Since base film is almost the same in all kinds of tape, the
metal tape does not differ significantly from the others in
Cra ——— TE [roe
Molecular construction
Density of residual magnetic
flux
Br
(gauss)
lene
ies
18000
regard to the physical and mechanical properties.
It, however, excels in terms of electrical characteristics
because of its special surface coating. .
For
this
reason,
it
can
provide
the
tape-deck
enthusiasts
with
greater
satisfaction,
enabling
them
to
achieve
superior
high
fidelity
in the
recording
and
playback
of
music.
3,200
TABLE 1: Magnetic characteristics of cassette tapes
Characteristics of metal tape are shown in TABLE 1 and
Fig. 1. From these, one can jearn that it excels in coercive
force and density of residual magnetic flux. Because of
these outstanding characteristics, it has the following
performance features when used on the cassette tape deck.
=—h
. Excellent frequency responses at high input levels both
in the recording and playback modes. (Fig. 2)
2. High maximum output levels over the entire frequency
range. (Fig. 3)
3. A wide dynamic range at high frequency levels.
. A superior SN ratio at high frequency levels.
5. An excellent distortion factor at high input levels.
(Fig. 4)
>
When recording sound on metal tape, be sure to clean
the heads thoroughly in advance. This is necessary to
obtain maximum Satisfaction from metal tape which
features excellent performance characteristics at high
frequency levels.
It is also recommended that you read and follow the
instructions contained in the manual on metal tape.
Fig. 1 Hysteresis loop
(ow)
“
4
4
‘
+ 20¥U)
etgl ia
wonmee Cr
pT) Le) 706 bo] — a 10" wn
LS
——» Frequency (Hz)
—— Output fevel (VU)
Fig. 2 Recording & playback frequency responses
——— Output Jevel (VU)
——> Input level (dB)
Fig. 3 input & output characteristics
Distortion
7
- Output level (VU)
-———_» Distortion factor (%)
Fig. 4 Input & output distortion characteristics