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





Marantz PM 310 amplifier

Marantz PM 310 Integrated amplifier
Features:
Bass and treble tone control
Left and right LED power meters
Low filter 6 dB/oct
Loudness compensation
Tape monitor
Tape 2 to tape 1 copy
41 step detented volume control
Connections:  Tuner; Phono MM; Tape 2/Aux; Tape 1 monitor; 1 speaker systems
Specifications:
Power Output Rating per Channel:
33 W at 4 Ω DIN
30 W at 4 Ω RMS
28 W at 8 Ω DIN
25 W at 8 Ω RMS
Total Harmonic Distortion (at RMS 8 Ω):  0,3%
Intermodulation Distortion:  0,3%
Damping Factor:  50 (8 Ω , 1 kHz)
M.M. cartridge Input
Frequency Response (RIAA):  ±1 dB
Signal-to-Noise Ratio:  74 dB
Input Impedance:  47 k Ω
Input Capacity:  250 pF
Input Sensitivity:  2,8 mV
Equivalent Noise at Input:  0,5 µV
Dynamic Range:  93 dB
AUX input
Input Impedance:  25 k Ω
Input Sensitivity:  150mV
Frequency Response:  15 Hz - 50 kHz
Signal-to-Noise Ratio:  96 dB
Output Voltage
Tape Out:  415 mV
Output Impedance
Tape Out:  220 Ω
Dimensions (W x H x D):  416 x 73 x 302 mm
Weight (net):  4,8 kg 

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