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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





Kyocera C-901 preamplifier

 

Control Preamplifier

Featuring Direct Coupling from  Front End to Output Terminals

 

Features:

Input Selector (Phono 1, Phono 2, Tuner, Aux)

Phono Selector (MC and MM cartridge)

Tape Monitor (1, source, 2)

Tape Copy (1 - 2; off; 2 - 1)

Mode (Stereo, Mono)

Muting (0, -20 dB)

Subsonic Filter (On, Off)

Bass, Mid, Treble (Detented variable)

Tone Switch (On, Off)

Bass Center Frequency (100 Hz, 50 Hz)

Mid Center Frequency (1 kHz)

Treble Center Frequency (10 kHz, 20 kHz)

Pre Out Switch (On, Off)

Inputs (Phono 1 & 2, Tuner, Tape 1 & 2, Aux)

Outputs (Tape 1 & 2, Preout 1 & 2)

Phones Jack

 

Specifications

Input Sensitivity/Impedance

Phono 1, 2 MC :  120 µV/1 K Ω

Phono 1, 2 MM :  2,5 mV/27 k Ω - 47 k Ω  - 100 K Ω

Tuner Aux, Tape 1, 2 :  150 mV/130 K Ω

Total Harmonic Distortion (20 Hz - 20 kHz)

Phono MC (1,5 V output) :  0,007%

Phono MM (13 V output) :  0,007%

Tuner, Aux, Tape (1,5 V output) :  0,007%

Tuner, Aux, Tape (13 V output) :  0,007%

Rated Output Power/Impedance

Rec Out :  150 mV/600 Ω

Pre Out :  1,5 V/22 Ω

Signal-to-Noise Ratio

Phono MC :  70 dB

Phono MM :  86 dB

Tuner, Aux, Tape :  110 dB

Frequency Response

Phono MC (20 Hz - 20 kHz) RIAA ±0,2 dB

Phono MM (20 Hz - 20 kHz) RIAA ± 0,2 dB

Tuner, Aux, Tape (20 Hz - 20 kHz) +0 -0,2 dB

Tuner, Aux, Tape (5 Hz - 100 kHz) +0 -1,0 dB

Maximum Input Level

Phono MM, MC :  1 kHz (RMS)

Maximum Output Voltage:  13 V

Tone Controls

Bass ±10 dB at 100 Hz - 50 Hz

Mid :  ±10 dB at 1 kHz

Treble :  ±10 dB at 10 kHz - 20 kHz

Subsonic Filter:  15 Hz (12 dB/oct)

Muting:  -20 dB

Power Supply:  AC 120 V, 60 Hz

Power Consumption:  80 W

Dimensions (W x H x D):  18-7/16" x 5-3/16" x 14-7/16"

Weight:  15,4 lbs

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