Sansui TU 9900

Hier:

www.fmtunerinfo.com

MfG

DB

Hi,

dir kann geholfen werden:
http://www.sansui.us/

Gruß,
Matthias

Hallo Morgan,

bei mir, hier ein paar Infos.
Quelle: Sansui Prospekt von 1977

TU9900
FM/AM STEREO TUNER DEPENDABLE PLUS-MINUS POWER SUPPLY
Musical reproduction from broadcast sources depends heavily on correct and accurate power supply circuitry. The TU-9900-finest 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 (Phase-Locked Loop) circuit in the FM multiplex demodulator are employed for lower phase deviation. The TU-9900 thus boasts a 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 narrowband 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 noisefree reception of any station regardless of its strength.
HIGH-PERFORMANCE FM FRONTEND The TU-9900 features a sensitivitv
of 1.5,uV (IHF) thanks to its linear-frequency 5-gang variable capacitor and the three dual-gated MOS FETs and a transistor employed in the high-perform ance FM frontend.
QUALITY AM RECEPTION
AM broadcasts 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 prerecording 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 to 108MHz SENSITIVITY (IHF) 1.5uV
(DIN) 0.9uV (1kHz, Mod. 30%, S/N 26d B)
MAX. INPUT CAPABILITY more than 130 dB
QUIETING SLOPE
MONO WIDE 37dB 1.5 uV, 51dB 3 uV
NARROW 37dB 1.5 uV, 51dB 3uV
STEREO WIDE 39dB 10 uV, 53dB 50 uV
NARROW 40dB 10 uV, 54dB 50 uV
TOTAL HARMONIC DISTORTION
MONO WIDE less than 0.06 %(at 1,OOOHz)
less than 0.06 % (at 50Hz)
less than 0.08% (at 10,000Hz)
NARROW less than 0.5% (at 1.OOOHz)
less than 0.5% (at 50Hz)
less than 0.8% (at 10,000Hz)
STEREO WIDE less than 0.08% (at 1,OOOHz)
less than 0.1% (at 50Hz)
less than 0.15% (at 10,000Hz)
NARROW less than 0.8 &(at 1,OOOHz) less than 0.8% (at 50Hz) less than 1. 2 %(at 10,000Hz)
SIGNAL TO NOISE RATIO
MONO better than 80d B
STEREO better than 76dB SELECTIVITY
WIDE better than 55dB (at 400kHz) better than 22dB (at 300kHz) better than 5dB (at 200kHz)
NARROW better than 90dB (at 400kHz) better than 60dB (at 300kHz) better than 20dB (at 200kHz) CAPTURE RATIO WIDEless than 1.0 dB
NARROW less than 3.0 dB
AM SUPPRESSION better than 58dB
IMAGE FREQUENCY REJECTION better than 100dB at 98MHz
IF REJECTION better than 110dB at 98M Hz
SPURIOUS RESPONSE REJECTION better than 110dB at 98MHz
SPURIOUS RADIATION less than 34dB
STEREO SEPARATION
better than 50dB at 1,0001-1z (30dB at narrow)
better than 40dB at 50Hz (30dB at narrow)
better than 40dB at 1OkHz (30dB at narrow)
FREQUENCY RESPONSE
30 to 15,OOOHz +0.5dB, -0.8dB
ANTENNAIMPEDANCE
300 ohms balanced 75 ohms unbalanced
FM ANTENNA ATTENUATOR -30dB AM SECTION
TUNING RANGE 535 to 1,605kHz
SENSITIVITY (BAR ANTENNA) 45dB/m at 1,OOOkHz SELECTIVITY (±lOkHz)
better than 70dB at 1,OOOkHz IMAGE REJECTION
better than 100dB/m at 1,OOOkHz IF REJECTION better than 100dB/m at 1,OOOkHz TOTAL HARMONIC DISTORTION
less than 1% at 80% Mod. 100d B/m
SEMICONDUCTORS39 Transistors, 3 FETs, 7 Ics 39 Diodes, 1 Zener Diode, 5 LEDs
POWER REQUIREMENTS
POWER VOLTAGE 100, 120, 220, 240V 50/60Hz
POWER CONSUMPTION RATED20 watts
DIMENSIONS460mm (18W) W 160mm (6%°) H 310mm (12'/a") D WEIGHT 9.6kg(21.21bs)Net 11.3kg (24.9 1bs)Packed


Gruß

Michael-Otto