Sony TA-2000F - Page 8

Stage/Control
Function
BASS TURNOVER S89 selects the specified turnover
FREQUENCY
switch S9
Tone-amplifier-2
Q504, Q505, Q506
FILTER switch
S11
LOW(50 Hz)
position
frequencies (500 Hz or 250 Hz).
Refer to the Fig. 1-3 (tone con-
trol response).
When TONE CANCEL switch
S5 is set to CANCEL, the line
signal is bypassed around the
tone-control circuit and is fed
directly to the output circuit
through FILTER switch S11.
Same as tone-amplifier-1 except
for reference numbers.
Selects the desired filtering op-
eration. LC filter circuits are
employed to eliminate insertion
loss.
Low-cut filter (C15, LO1) cuts
out unwanted low frequency
components from the input sig-
nals (12 dB/oct below 50Hz).
20 50 100 200 S500 1k 2k
5k 10k 20k
Frequency in Hz
TURNOVER FREQuency:
BASS 500 Hz
TREBLE 2.8 kHz
Stage/Control
OFF position
HIGH (9 kHz)
position
BOTH position
Function
These unwanted low frequencies
include rumble created by the
turntable, record changer, or the
record itself. See Fig. 1-4.
All filter circuits are removed
from signal paths and have no
effect upon frequency response.
High-cut filter (LO2, C16) cuts
out unwanted high-frequency
components from the input sig-
nals (12 dB/oct above 9kHz).
These unwanted high frequencies
include hiss noise created by
tape deck or tape itself. See
Fig. 1-4.
Both low- and high-cut filters
are effective. See Fig. 1-4.
The signal from the FILTER
switch is routed to the OUTPUT
jacks through OUTPUT LEVEL
switch $13.
a
RS
Ny
LR]
Aan
a
=
1
AA
yy
ay
4
ty
Y]
.
22
20 50 100 200 500
Frequency in Hz
TURNOVER FREQuency:
1k 2k 5k 10k 20k
BASS 250 Hz
TREBLE 5kHz
Fig. 1-3. Tone control frequency response
eS ES eal =
BE
5k 10k 20k 50k 100k 200k 500k
50 100 200 500 1k 2k
Frequency in Hz
Output: 1 volt (OUTPUT LEVEL switch set to 1V)
input signal applied to TUNER inputs
TONE CANCEL switch: CANCEL position
VOLUME control: maximum clockwise
FILTER switch: OFF position
BOTH position --------
Fig. 1-4. Filter response