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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





Philips FT-650 tuner


Specifications

FM Tuner Section (at 75 Ω )

Tuning Range:  87,5 MHz - 108 MHz

Aerial Inputs:  75 Ω  coaxial / 300 Ω  symmetrical

Sensitivity

Mono :  2,0 µV , 3% distortion, 75 kHz dev.

Selectivity:  50 dB at ±300 kHz bandwidth

Frequency Response:  30 Hz - 15 kHz +1,0  -4,0 dB

Suppression

IF - AM :  70 dB -45 dB

Pilot Tone :  40 dB

Image Frequency :  65 dB

Channel Separation:  30 dB , 1 kHz

Total Harmonic Distortion

Mono :  0,4%

Stereo :  1,0 %

Signal-to-Noise Ratio

Mono :  71 dB

Stereo :  63 dB

Automatic Stop Threshold (Muting):  4 - 9 µV

Output:  350 - 800 mV , better than 3,3 k Ω

AM Tuner Section

Wave Ranges

MW :  531khz to 1602 kHz

LW :  152 kHz to 282 kHz

Sensitivity

MW :  30 µV , 10% distortion

LW :  300 µV 10% distortion

Selectivity (Loop Antenna):  20 dB at ±9 kHz bandwidth

Suppression

IF (Loop Antenna) :  50 dB

Image Frequency (Loop Antenna) :  35 dB

Output: 200 - 400 mV better than 3,3 k Ω

Tuner Digital Section

Tuning Steps: 

FM :  50 kHz

MW :  9 kHz

LW :  1 kHz

Presets FM + MW + LW :  30 random sequential

General

Mains Voltage:  220 V - 240 V

Mains Frequency:  50 Hz - 60 Hz

Power Consumption:  10 W max

Dimensions (W x H x D):  420 x 60 x 260 mm

Weight :  3,0 kg

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