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

Sansui TU-505

 Solid State AM/FM Stereo Tuner
The sensible price tag and compact dimensions of the TU-505 are but two of its virtues. Even more significant is the outstanding performance you can expect from this new stereo tuner, that is certainly one of the most versatile ever made in its price range.
  It employs a dual-gated MOS type FET and number of other sophisticated features usually common only to very expensive top-of-the-line tuners, and because Sansui engineers have devoted so much of their design time to building in this quality you can expect the very finest of essential FM receiving capabilities from the TU-505. its distortion factor, intermodulation distortion, and stereo separations do not deteriorate even in highly congested FM areas. Furthermore, its ability to reject spurious response, IF and image frequency is unparalleled for its size.

And its AM tuner section is the equal of its FM section, for it is equipped with a 2-resonator ceramic filter and extra large ferrite bar antenna for pin-point, clear AM reception wherever it may be used. Simply, this tuner is extremely functional, and it is complemented by an array of function features. Among these are an AM/FM noise suppressor switch, an FM muting switch and FM stereo indicator, along with two pairs of outputs.  
 In appearance, the TU-505 has been designed to match the Sansui AU-505 and AU-101 stereo integrated amplifiers, so you may choose any of these components to work as a team. The elegant satin-black front panel with luminous wide dial will be a highlight of your music listening room. And since the external dimensions of the Tu-505 match those of the other two Sansui amplifiers, you can stack them vertically or place them side-by-side. It all adds up to quality performance at a modest investment. Which is what, by now, you've certainly come to expect from Sansui.
FM Section
Tuning Range:  88 to 108 MHz
Sensitivity (IHF):  2,5 µV
Total Harmonic Distortion
Mono : less than 0,6%
Stereo : less than 0,8%
Signal-to-Noise ratio:  better than 65 dB
Selectivity:  better than 50 dB
Capture Ratio (IHF):  less than 2,5 dB
Image Frequency Rejection:  better than 50 dB at 98 MHz
IF Rejection:  better than 60 dB
Spurious Response Rejection:  better than 60 dB
Spurious Radiation:  less than 34 dB
Stereo Separation:  better than 35 dB at 400 Hz
Frequency Response:  30 to 15,000 Hz  +1 -2.5 dB
Antenna Input Impedance:  300 Ω balanced, 75 Ω unbalanced
Antenna Att.: 20 dB
AM Section
Tunning Range:  535 to 1605 kHz
Sensitivity (Bar Antenna):  50 dB/m
Selectivity:  better than 25 dB
Image Frequency Rejection:  better than 80 dB/m at 1,000 kHz
IF Rejection:  better than 80 dB/m
Tape Rec Output:  0,4 V
Output:  1,0 V
Semiconductors:  27 Transistors; 1 FET; 19 Diodes; 1 Ics
Power Requirement:  100, 117, 220, 240 V 50/60 Hz
Power Consumption:  Max. 16 VA Rated 14 watts
Dimensions (W x H x D):  407 x 115 x 278 mm (16-1/16 x 4-9/16 x 11 inches)

Weight:  5,5 kg (12,1 lbs)

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