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

Optonica RP-5100 turntable

Direct Drive Stereo Turntable
The first step in ensuring performance stability in the RP-5100 was inclusion of the durect drive system with its FG servo Mono Torque DC coreless motor. This precision drive system suppresses rumble and cogging while ensuring rotational speed precision and a prolonged service life. A separate tonearm motor helps maintain this rotational precision while increasing tonearm trackability. The design of the statically-balanced J-shaped tonearm serves as an inside force canceller while enhancing trackability. To ensure extra precision in rotational speed control, a stroboscope was built into the Rp-5100 to detect even small fluctuations in speed and to compensate for them instantly. The pitch control, in combination with the stroboscope, can be employed to make fine adjustments in the turntable rotating speed.

Type:  full-automatic
Motor:  DC core-less motor with FG (Frequency generator) Servo control system
Drive System:  Direct-drive system
Turntable Platter :  aluminum die-cast
Platter Diameter:  300 mm
Speed:  33-1/3 and 45 rpm
Speed Control Range :  ±4%
Wow and Flutter:  ±0,06% (DIN 45 500);  0,04% WRMS (JIS C-5521)
Rumble:  45 dB (DIN A);  65 dB (DIN B)
Tonearm Type:  Static-balanced J-shaped pipe-arm
Effective length:  210 mm
Overhang:  11 mm
Off-Set-Angle:  19°
Cartridge Weight Range:  4 - 12 g
Stylus Pressure Range:  1 - 3 g
Type:  VM cartridge type
Output Level:  3 mV
Frequency Response:  20 Hz - 20 kHz
Channel Separation:  20 dB
Channel Balance:  3 dB
Recommended Load Impedance:  47 k Ω, 100 pF
Weight:  5,5 g
Recommended Stylus Pressure:  2 g
Power Source:  110, 20, 240 V 50/60 Hz AC
Power Consumption:  12 W
Dimensions (W x H x D):  480 x 108 x 384 mm
Weight:  8,5 kg
Finish color: Silver (H) , Brown (HB)

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