Professional
class tuner for superior stereo receeption under any kind of broadcast
conditions.
The elegance of these tuners speaks for itself
because they are deigned to complement the amplifiers you choose. Sansui's
indepth research contributes a lot and has helped keep phase distortion down
and FM selectivity high, for all of the tuners in the range. The control this
tuner gives over an incoming signal puts it into a class way above that of an
ordinary FM stereo receiver. With the TU-9900it's very much like having a
private line between the tuner and the FM stereo broadcasting studio. The
TU-9900 is the ultimate in tuner sophistication. But the same Sansui thought
goes into all of the Tuners. This tuner not only look good. Slanted tuning
dials, separate signal/tune meters, smooth dial mechanisms and many other
convenince features make them a pleasure to use.
Dependable
Plus-Minus Power Supply
Musical
reproduction from broadcast sources depends heavily on correct and accurate
power supply circuitry. The TU-9900 'finst of the Sansui TU Series'
incorporates an elaborate feedback type stabilized power supply section for
this very reason. It is of the plus-minus dual supply type to guarantee ideal
circuit performance at all times.
Superlow
Distortion, 0,06%
A wide-band
ratio detector and a PLL circuit in the FM multiplex demodulator are employed
for lower phase deviation. The TU-9900thus boasts aa very low distortion figure
of 0,06% (mono) and 0,08% (stereo) in FM operation to bring its performance up
to the quality required by the very best amplifier components.
Selectable
FM IF Bandwidth
To enhance
both the tonal quality and the reception ability of the TU-9900, Sansui has
provided a switch to select either a Wide or Narrow FM IF bandwidth. In the
former, two 6-pole LC block filters are put on line to improve the sound
quality; in the latter, a narrow-band ceramic filter is added for more
effective rejection of adjacent signals.
Automatic
Noise Canceller
When
receiving weak (or remote) stations, this circuit automatically blends the left
and right signals in optimum proportion to the strength of an incoming
broadcast to deliver the same noise-free reception of any station regardless of
its strength.
High-Performance
FM Front-End
The TU-9900
features a sensitivity of 1,5 µV (IHF) thanks to its linear-frequency 5-gang
variable capacitor and the three dual-gated MOS FETs and a transitor employed
in the high-performance FM front-end.
Quality AM
Reception
AM broadcast
are received cleanly and quietly with the lowest noise or interference possible
thanks to the use of a double-tuned circuit and a dual-element, dual-coil
ceramic filter in the AM section.
Positive
Action Tuning
The feel and
accuracy of the special tuning mechanism in the TU-9900 will be appreciated for
years of hard and frequent use. It features an oversized tuning knob a special
tension mechanism, and a heavyweight, high-inertia sintered iron flywheel.
Special
Features for Tape Recording
Tape buffs
will appreciate these three special features:
1.A built-in
recording test signal generator is provided to facilitate pre-recording
calibration of optimum recording levels.
2.A low-pass
filter is included to prevent the carrier frequencies of FM broadcasts from
interacting with the bias frequencies of decks in use, thus avoiding the
annoying "beat" noise otherwise heard. The filter can be defeated by
a front panel switch when not recording.
Other
Important Features:
The TU-9900
has an FM Antenna Attenuator Switch to cut down the strength of excessive
incoming signals; a Multi-Path Detection circuit to help align antennas, highly
accurate Twin Tuning Meters, FM Muting Switch, Dolby FM output terminals, and
an Output Level Control.
Specifications:
FM Section
Tuning
Range: 88 - 108 MHz
Sensitivity: 1,5 µV (IHF); 0,9 µV (DIN)[1 kHz,
mod.30%,S/N26 dB]
Max. Input
Capability: more than 130 dB
Quieting
Slope:
Mono Wide
: 37 dB 1,5 µV, 51 dB 3 µV
Narrow
: 37 dB 1,5 µV, 51 dB 3 µV
Stereo Wide
: 39 dB 10 µV, 53 dB 50 µV
Narrow
: 40 dB 10 µV, 54 dB 50 µV
Total
Harmonic Distortion
Mono Wide
: less than 0,06% (at 1 kHz); less than
0,06% (at 50 Hz); less than 0,08% (at 10 kHz)
Narrow
: less than 0,05% (at 1 kHz); less than
0,05% (at 50 Hz); less than 0,08% (at 10 kHz)
Stereo Wide
: less than 0,08% (at 1 kHz); less than
0,1% (at 50 Hz); less than 0,15% (at 10 kHz)
Narrow
: less than 0,8% (at 1 kHz); less tha
0,8% (at 50 Hz); less than 1,2% (at 10 kHz)
Signal-to-Noise
Ratio
Mono : better than 80 dB
Stereo
: better than 76 dB
Selectivity
Wide : better than 55 dB (at 400 kHz); better than
22 dB (at 300 kHz); better than 5 dB (at 200 kHz)
Narrow
: better than 90 dB (at 400 kHz); better
than 60 dB (at 300 kHz); better than 20 dB (at 200 kHz)
Capture
Ratio:
Wide : less than 1,0 dB
Narrow
: less than 3,0 dB
AM
Suppression: better than 58 dB
Image
Frequency Rejection: better than 100 dB
at 98 MHz
IF
Rejection: better than 110 dB at 98 MHz
Spurious
Response Rejection: better than 110 dB
at 98 MHz
Spurious
Radiation: less than 34 dB
Stereo
Separation:
Better than
50 dB at 1 kHz (30 dB at narrow)
Better than
40 dB at 50 Hz (30 dB at narrow)
Better than
40 dB at 10 kHz (30 dB at narrow)
Frequency
Response: 30 to 15,000 Hz, +0,5 -0,8 dB
Antenna
Impedance;
Balanced
: 300 Ω
Unbalanced :
75 Ω
FM Antenna
Attenuator: -30 dB
AM Section
Tuning
Range: 535 - 1605 kHz
Sensitivity
(Bar Antenna): 45 dB/m at 1,000 kHz
Selectivity: better than 70 dB at 1,000 kHz (±10 dB)
Image
Rejection: better than 100 dB/m at 1,000
kHz
IF
Rejection: better than 100 dB/m at 1,000
kHz
Total
Harmonic Distortion: less than 1% at 80%
Modulation 100 dB/m
Semiconductors: 39 Transistors; 3 FETs, 7 Ics, 39 Diodes, 1
Zener Dioda; 5 LEDs
Power
Requirements: 100,120, 220, 240 V, 50/60
Hz
Power
Consumption: 20 watts rated
Dimensions
(W x H x D): 460 x 160 x 310 mm
(18-1/8" x 6-5/16" x 12-1/4")
Weight:
Net : 9,6kg (21,2 lbs)
Packed
: 11,3 kg (24,9 lbs)