|
| Accuphase T-106 |
|
| 145,000 yen(January, 1984 release) |
The FM/AM tuner in which the FM section which supplied the new technology of an
electronic tuning circuit, a DGL FM wave detector, etc., and the AM section of synchronous detection were carried.
While using the crystal oscillator
for alignment and being able to unite with the signal of choice in ±0.002% of
accuracy, most gaps by time or a temperature change cannot be found, and it
locks at the point of the distorted minimum and sensitivity highest.
The abnormal-conditions distortion or noise by external vibration do not occur for
electronic tuning. Moreover, the digital display of frequency has adopted the
static system which noise does not generate.
The 14-game random memory
is carried, seven feather touch buttons are used for a double type, and the
random memory of FM of 14 games and the AM office can be carried out to a
favorite button.
Moreover, it also has the rotation knob type tuning
adapting the optics of the same feeling as variable condenser type tuning, and
continuation tuning can also be carried out at intervals of 100kHz (AM is every
9kHz) with pip sound.
as for the front end part, an input and
magnification interstage serve as double alignment, respectively, and
disturbance of the Dainyuu power has improved sharply interference (RF
inter-modulation) boiled and depended.
The characteristic excellent in
combining especially the newly developed DGL wave detector and the selected
group delay flat IF filter has been acquired.
A DGL detection system is the
circuit to which its attention was paid at the delay time of the output of a
high-speed logic IC,It is making a high-speed logic IC into 19-piece series,
delaying 114 degrees of phase angles so that the distorted minimum and S/N may
become best, and applying this delay signal and incoming signal to an exclusive
OR circuit,The electric potential between two signals was chosen, the circuit
was opened and closed, the degree of roughness and fineness of the signal wave
produced by abnormal conditions was detected in digital one (logical
multiplication), and the audio signal is taken out. The linear region of a delay
circuit is as large as ±5MHz, and since a-less equalization circuit moreover,
the differentiation profit straight line characteristic of it having been stable and having excelled is acquired.
moreover, IF filter (Normal) 2 sets of (Narrow) are used, and when interference
is intense, reception of selection degree importance is possible by changing
to Narrow.
State-of-the-art technology is accumulated on FM stereo recovery
circuit, and the outstanding characteristic has been acquired.
AM
broadcast reception was also thought as important and distortion has adopted the
synchronous detection which was excellent in interference removal capability
few.
By making the same as that of an input subcarrier local oscillation
frequency poured into a mixed vessel, a synchronous system takes out an audio
signal at once, and the degree of selection is decided by the characteristic of
a low-pass filter prepared in the audio circuit, and serves as an outstanding
system with little detection distortion.
Furthermore, a disturbance wave can judge the low higher than receiving station frequency and frequency side, and the synchronous detection can choose Sideband. For this reason, a sky wave demonstrates power also in the area which worries about interference of the night which becomes strong, or an overseas office.
Since it added to the standard broadband super system in T-106,
synchronous detection is adopted and the frequency response has given the
emphasis characteristic united with the sound equalizing (pre-emphasis)
characteristic of NHK,Pre-emphasis broadcast is receivable with a good frequency
response.
Moreover, the beat of the adjoining office is removed with a 9kHz
filter.
The state of an input electric wave can be known with the peak degree-of-modulation meter which displays the signal meter in which signal strength is shown, and a degree of modulation to 200%.
Moreover, the
degree-of-modulation meter can know the direction of the antenna which serves as
a multipass meter and becomes the distorted minimum by switch change.
The selectivity switch used when there are much the noise filter and interference
which reduce the noise of the weak stereo office of an electric wave as
an attached function,The level control which unites a level with the volume
of the muting switch from which the noise between offices is removed, the
side band selector which chooses AM side band at the time of interference,
and other program sauce is carried.
The natural rosewood cabinet currently
used for the photograph was an option.
Moreover, there is T-106B of a black model.
|
| Form |
AM/FM tuner |
| <FM monophonic characteristic>
|
| Received frequency |
76.0MHz - 90.0MHz |
| Practical speed |
11dBf(IHF) |
| S/N 50dB sensitivity |
17dBf(IHF) |
| Standing-wave ratio |
1.5 |
| S/N (80dBf input, A compensation)
|
90dB |
THD
(at the time of 80dBf input, ±75kHz
deflection, and Normal) |
20Hz:0.04%
1kHz:0.04%
10kHz:0.04%
|
| IM distortion (80dBf input, ±75kHz
deflection) |
0.01% |
| Frequency response |
10Hz-16000Hz+0 -1.0 dB |
| The degree (IHF) of 2 signal selection
|
| Disturbance wave |
Normal |
Narrow |
| 400kHz |
70dB |
100dB |
| 300kHz |
30dB |
70dB |
| 200kHz |
8dB |
22dB
|
|
| Capture ratio |
1.5dB |
| RF inter-modulation |
80dB |
| Spurious disturbance ratio |
120dB |
| Image ratio |
120dB |
| IF/2 spurious response |
100dB |
| AM oppression ratio (65dBf input)
|
80dB |
| Subcarrier oppression ratio |
70dB |
| SCA disturbance ratio |
80dB |
| Output voltage (±75kHz deflection)
|
1.0V |
| <FM stereo characteristic>
|
| Sensitivity (IHF) |
S/N 40dB:29dBf
S/N 50dB:37dBf
|
| S/N (80dBf input, A compensation)
|
85dB |
THD
(at the time of 80dBf input, ±75kHz
deflection, and Normal) |
20Hz:0.04%
1kHz:0.04%
10kHz:0.08%
|
| IM distortion (80dBf input, ±75kHz
deflection) |
0.03% |
| Frequency response |
10Hz-16000Hz+0 -0.5 dB |
| Stereo separation |
100Hz:50dB
1kHz:50dB
10kHz:45dB
|
| Stereo change inlet pressure |
20dBf |
| <AM tuner part> |
| Received frequency |
522kHz - 1611kHz |
| Practical speed (S/N 20dB) |
20microvolts/m |
| Image disturbance ratio |
50dB |
| THD (1 mV/m, 1kHz, 30% abnormal conditions)
|
0.3% |
| S/N ratio (1 mV/m, 1kHz, 30% abnormal
conditions) |
50dB |
| Demphasis |
100microS |
| Output voltage (30% abnormal conditions)
|
0.3V |
| <Synthesis> |
| Antenna |
FM: 75-ohm disequilibrium (with a 300-ohm
balance transducer)
AM: Empty core loop antenna |
| Alignment system |
Quartz synthesizer system
14-game random
memory tuning |
| Detection system |
FM:DGL system
AM: Synchronous system
|
| Output load impedance |
Fixed output: 200ohms
Variable output:
1.25kohm (maximum) |
| Meter |
Signal strength, a multipass / modulation
change type |
| The semiconductor used |
Transistor: 38 pieces
FET: Six pieces
IC: 50 pieces
Diode: 63 pieces
LED: Ten pieces
Opt-in タラプタ: Two pieces |
| Power source |
AC100V, 50Hz/60Hz |
| Power consumption |
23W |
| Dimensions |
the width 445x height 128x depth of 370mm (a piece includeds) |
| Weight |
9kg |
| Option: Wood cabinet A-9 (\16,000)
|
| Dimensions |
Width: 466x height 153x depth of 385mm
|
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