Teac A-4010GSL - Signal to Noise Ratio (Playback)

SIGNAL
TO
NOISE
RATIO
NOTE:
Values
given
are
obtained
using
an
unweighted
level
meter
while
the
supply
and
take-up
motors
have
voltage
applied
but
are
not
rotating.
The
OUTPUT
control
should
be
at
specified
output
position.
(See
SPECIFIED
OUTPUT
LEVEL
SET,
item
11.)
1.
Thread
a
tape
on
the
unit,
leaving
the
tape
outside
the
capstan
and
pinch
roller.
Tension
arm
should
be
in
ON
position.
Place
the
unit
in
the
PLAY
mode
(
Bm)
(the
tape
will
not
move).
2.
3.
The
level
meter
connected
to
the
OUTPUT
jacks
should
indicate
-56
dB
or
less.
a0
4.
This
corresponds
to
a
signal
=
nee
=.
~
to
noise
ratio
of
48
dB(dif-
ference
between
residual
noise
-56
dB
and
specified
output
level
-8
dB
for
12%
THD).
For
a
3%
THD
signal
to
noise
ratio,
6
dB
is
added,
giving
56
dB
(3%
THD
is-6
dB
above
1%
THD
level).
serpy Hon!
Fig.
6-3
Signal
To
Noise
Ratio
Computation
RESPONSE IN dB
Fig.
6-4
Freq.
Response
Limits
-Playback-
Fig.
6-5
EQ.
Curves
-Playback-