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





Kenwood KR-3090


 KR-3090 AM/FM STEREO RECEIVER
This units features wide band power with the same low distortion amplifier and high performance FM tuner you expect from Kenwood
Features:
26 watts per channel, Min. RMS both channels driven at 8 ohms, 20 - 20,000 Hz, with no more than 0,05% THD
Direct-coupled pure complementary amplifier circuit
Quietest phono section in its class: 83 dB S/N
3-gang tuning capacitor and FET front end for high FM sensitivity (2.0 µV ) with low distortion
PLL in FM Multiplex for improved stereo separation
Large signal strength and FM centre-tune meters
FM Auto Muting
Connetions for 2 pairs of speakers
Natural low-boost only loudness control
Tape monitor
Optional CB-11K walnut veneer cabinet, B-11 walnut veneer side panels, or D-5 carrying handles available.



Specifications
Min. RMS Power Output:  26 watts per channel (at 8 Ω, 20-20,000 Hz)
Total Harmonic Distortion:  no more than 0,05%
IM Distortion (at reted power):  0,05%
Damping Factor (at 8 Ω):  40
Imput Sensitivity:
Phono : 5,0 mV/ 120 mV
Aux, Tape : 150 mV
Signal-to-Noise Ratio:
Phono : 83 dB
Aux, Tape : 100 dB
FM Tuner Section
Sensitivity at 30 dB Quieting:  2,0µV  (11,2 dBf)
Sensitivity at 50 dB Quieting
Mono : 3,3µV (15,6 dBf)
Stereo : 35µV (36,1 dBf)
Max. Quieting
Mono : 76 dB
Stereo : 72 dB
Total Harmonic Distortion
Mono : 0,2%
Stereo : 0,3%
Capture Ratio:  1,4 dB
Alternate Channel Selectivity:  54 dB
Stereo Separation:  43 dB at 1 kHz; (35 dB at 50 - 10 kHz)
General
Inputs / Outputs:  Phono, Aux, Tape / 2 Speakers, Phones
Dimensions (W x H x D):  18-7/16 x 5-1/2 x 13-11/16 inch
Weight:  16,5 lbs

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