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





Nikko NR-315 receiver

The NR-315 AM/FM Stereo Receiver delivers 10 watts per channel, minimum RMS per channel, both channel driven into 8 ohms from 40 Hz to 20 kHz, with no more than 0,8% Total Harmonic Distortion. Although the smallest of the Nikko Audio receivers, this unit continues the Nikko Audio tradition of superb engineering and high quality. Included are the phase-lock-loop FM multiplex circuitry and high performance IC in the AM section for low noise, low distortion and maximum stereo separation. Phase linear ceramic filters are used throughout to reduce distortion.

Feaatures include single speaker output, separate bass and treble controls, balance control, volume control, loudness and tape monitor switching. Additional features include a 4-way function selector, large oversized center tuning meter, headphone jack, and Nikko's own exclusive circuit breakers for protection.

The Nikko Audio NR-315 is a big performer FM sensitivity is a usable 2,2 µV FM selectivity is 50 dB, while FM image rejection is an accurate 50 dB. 

Specifications:

FM Tuner Section

Sensitivity (IHF) Stereo :  2,2 µV

Selectivity. Alt. Channel :  50 dB

Image Rejection:  50 dB

IF Rejection:  70 dB

Total Harmonic Distortion

Stereo  (65 dBf) :  1,0 %

Mono (65 dBf) :  0,5%

Stereo Separation:  40 dB at 1 kHz

Capture Ratio:  3,0 dB

AM Tuner Section

Selectivity:  25 dB ( ±10 kHz)

Image Rejection:  45 dB

IF Rejection:  35 dB

Signal-to-Noise Ratio:  45 dB

Power Amp Section

Minimum Rated Power RMS:  10 watts per channel, both channels driven, into 8 Ω

Total Harmonic Distortion:  0,8 %

Frequency Response:  40 Hz - 20 kHz

Dimensions (W x H x D):  17-5/16" x 5-5/16" x 11-13/16"

Weight:  13 lbs

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