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What is stereo?




There are now two system of high fidelity, monophonic (monaural) and stereophonic. Monophonic is a system that starts from one microphone and is fed through a single high fidelity set. Stereophonic is a double system. Two separate microphones are placed at different sides of the orchestra and two different systems are used to keep the two signals or channels separated. Two separate speakers are used, placed on different sides of you room. Stereo is much like 3-D photography, two slightly different sound reach your ears giving you a new dimension in sound.




H.H. Scott '59





Tandberg TR 200

Features Tandberg TR 200
Specifications better than DIN standard 45500
Pre-selection of up to 6 FM stations.
Interstation noise muting
Pre-amplifier for record players with magnetic pickup
Front jack for stereo headphones

FM Tuner
The Tandberg FM Stereo receiver TR-200 is provided with a sophisticated FM tuner that permits pre-selection of up to 6 FM stations. Black dial remains dark until power is turned on, then lights up in crisp contrast to provide pleasant, easy tuning. Muting effectively suppresses interstation noise during tuning. Available with decoder for stereo FM reception.
Stereo Power Amplifier
High power output (2 x 20 Watts RMS and 2 x 30 Watts music power). RIAA equalized pre-amplifier for record player with magnetic pickup. Loudness compensation switch. Inputs for rocord player, tape deck and an extra program source, thus providing a wide versatility. The TR-200 is ideal as the hub of your Tandberg high fidelity stereo system.  TR-200 is housed in a stylish cabinet available in walnut, teak, rosewood or oak.
Specifications
Nominal Power Output (1% THD at 1 kHz, DIN):
2 x 20 Watts RMS into 4 Ω
2 x 15 Watts RMS into 8 Ω
Music Power:  2 x 30 Watts into 4 Ω
Harmonic Distortion:  0,25% at power output 1 dB below nominal value and lower
Intermodulation Distortion:  1%
Damping Factor: 15 at 4 Ω; 30 at 8 Ω
Power Bandwidth:  20 - 35,000 Hz (DIN)
Frequency Response:  20 - 40,000 Hz (linear inputs, DIN)
Treble Control:  +14 dB, -15 dB at 10,000 Hz
Loudness:  =3,5 dB at 10,000 Hz
Bass Control:  +16 dB, -16 dB at 50 Hz
Loudness:  +11 dB at 50 Hz
Channel Separation:  43 dB at 1000 Hz (DIN)
Signal/Noise Ratio (DIN, reference 50 mW at nominal input signal, peak value):
Tape : 52 dB
Extra : 52 dB
Phono  Magnetic and Ceramic: 52 dB
Sensitivity (nominal power output at 1 kHz):
Tape : 250mV
Extra : 100 mV
Phono Magnetic : 2,3 mV
Phono Ceramic : 70 mV
FM Section
Frequency Band:  87,5 - 108 MHz
Sensitivity at 26 dB S/N, DIN:
1 µV at 75 Ω;
2 µV at 300 Ω
Sensitivity at 30 dB S/N , IHF:
2 µV at 300 Ω
Signal/Noise Ratio (at 1 mV antenna voltage):
61 dB : Unweighted DIN
70 dB : Weighted DIN
68 dB : Unweighted IHF
Harmonic Distortion:
0,5% DIN;  1% IHF
IF Rejection:  100 dB IHF
Image Frequency rejection: 70 dB IHF
IF Bandwidth:  210 kHz (6 dB)
Limiting (-3 dB):  3 µV at 75 Ω
Muting Thereshold:  5 µV at 75 Ω
Capture Ratio: 1,8 dB
General
Power Requirements:  Selector for 115/220/240 V AC, either 50 or 60 Hz
Power Consumption:  15 - 100 Watts
Dimensions (W x  H x D):  430 x 87 x 243 mm (16-7/8" x 3-7/16" x 9-5/8")
Weight:  5 kg  (11lbs)

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