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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





Crown FM 1 tuner

FM Stereo Tuner
An FM only stereo tuner with phase-locked loop digital tuning and LED metering readouts. All tuning functions are touch-controlled for no-moving-parts operation. The memory function allows the pre-setting of five favorite stations for instant recall. The scan search feature allows the listener to sweep up and down the dial, stopping either at every active station or only those broadcasting in stereo automatically. The variable muting control allows the user to set the tuner to receive only signals of sufficient strength to assure noise-free reception. All phases of operation are handled smoothly and facilitate the highest order of tuning accuracy and convenience. Ther is LED  metering for multipath and signal strength variable interstation muting control, selectable stereo de-emphasis and a multiplex filter.

Specifications
Tuning Range:  88,1 to 107,9 MHz
Antenna Inputs:  300 Ω balanced; 75 Ω unbalanced
Intermadiate Frequency:  10,7 MHz
Sensitivity:  10,8 dBf (IHF usabla)
Quieting:  0,6 mV (75 Ω) for 30 dB mono quieting;  36 dBf for 50 dB stereo quieting; 10,8 dBf for 50 dB mono quieting
Signal-to-Noise Ratio:
Mono :  70 dB below 100% modulation at 65 dBf reference level
Stereo :  65 dB below standard stereo modulation at 65 dBf reference level
Hum and Noise:  65 dB below 100% modulation at 65  dBf reference level. Minimum volume hum and noise is 90 dB below reference
Total Harmonic Distortion:  at 1000 Hz 65 dBf 100% modulation
Mono :  0,1%
Stereo :  0,09%
Capture Ratio:  2 dB at 65 dBf
Alternate Chanel Selectivitty:  75 dB at 25 dBf
Frequency Response:  30 Hz to 15 kHz ±0,5 dB
Stereo Separation:  45 dB at 1 kHz; 35 dB aat 10 kHz
Image Response Ratio:  better than 114 dB
Spurious Response Ratio:  better than 114 dB
IF Response Ratio:  better than 114 dB both balanced and unbalanced
RF Intermodulation:  65 dB
AM Suppression Ratio:  better than 73 dB at 25 dBf
Subcarrier producct Ratio:  65 dB
SCA Rejection Ratio:  72 dB
Connectors: 
300 Ω Balanced Antenna Input - push button quicj connect
75 Ω Unbalanced Input - F type
Composite - PIN jack
Multipath - PIN jack
Left Channel variable and fixed output - PIN Jack
Right Channel variable and fixed output - PIN Jack
Display:  7 segment red LED Frequency readout
Red LED Stereo indicator
20 LED Analog dial green dot display
10 LED Signal Strength green bar display
10 LED Multipath amber bar display
Power Requirements:  120 V or 100, 200, 220, 240 V AC , 50/60 Hz
Power Consumption:  10 watts
Dimensions (W x H x D):  483 x 133 x 381 mm (19" x 5-1/4" x 15")
Weight:  7 kg (15,5 pounds)
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