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

Yamaha R-100 Receiver

Introducing command performance music. Introducing the R-100, the most astounding, musical-sounding receiver ever to come from Yamaha. or anyone.
There's 100 watts RMS per channel (both channels driven into 8 ohms, 20 Hz to 20 kHz, with no more then 0,015 THD) combined with our unique Zero Distortion Rule circuitry to virtually eliminate power amplifier and thermal distortion. But such wonders have been heard from yamaha before.

The unheard-of part is the phenomenal control the R-100 gives you over your music. For the first time, a five-band graphic equalizer is combined with a microcomputer. This unique Computer-Controlled Sound System (CCSS) allows you to select from five different preset frequency response curves (loudness, Bass, Presence, Treble or High Filter), and then further adjust each of the five curves in four different preset variations. You can then store any three of the preset variations in memory for instant recall.
And if you really want to be creative with your music listening, you can adjust the five bands independently to form any frequency response curve you choose, then store it in memory.
The CCSS offers you unparalleled flexibility to tailor the music to your personal taste and listening enviroment.
And you cancontrol all this (and a lot more) by just pressing the right button on the remote control unit that is a standar accessory.
There's more that comes standard with the R-100. Like Yamaha's spatial expander, dynamic noise canceller, the ability to handle low impedance loads, and the headroom to handle "hot" source inputs.
And there are four more models to choose from, each with the same natural sound Yamaha is famous for. Whichever one you choose , you'll hear your music like you've always wanted to hear it. 

Audio Sections
Minimum RMS Output Power per Channel:
100 W at 8Ω, 20Hz-20kHz, 0,01% THD;
130 W at 4Ω, 1 kHz, IHF Signal (Dynamic Power);
130 W at 2Ω, 1 kHz, IHF Signal (Dynamic Power)
Dynamic Haedroom (IHF, 8Ω):  1,5 dB
Power Bandwidth (8Ω, 0,012% THD, 50 W):  10 Hz to 30 kHz
Damping Factor (8Ω, 1 kHz):  45
Input Sensitivity/Impedance:
Phono MM : 2,5 mV/47 kΩ
Phono MC : 160 μV/100 Ω
Aux, Tape, Tuner : 120 mV/47 kΩ
Input Sensitivity (New IHF):
Phono MM : 0,25 mV
Phono MC : 16 μV
Aux, Tape, Tuner : 12 mV
Maximum Input Level (1 kHz, 0,02% THD):
Phono MM : 110 mV
Phono MC : 7 mV
Output Level/Impedance:
Rec Out : 120 mV/4,7 kΩ
headphone Output/Impedance (0,25% THD):  0,81 V/ 270 Ω
Frequency Response:
Aux, Tape, Tuner : 20 Hz - 20 kHz,  +0, -1 dB
RIAA Deviation:
Phono MM (20 Hz to 20 kHz):  ±0,5 dB
Phono MC (50 Hz to 20 kHz):  ±0,5 dB
Total harmonic Distortion (20 Hz to 20 kHz):
Phono MM to Rec Out (1 V): 0,008%
Phono MC to Rec Out (1 V): 0,008%
Aux/Tape/Tuner to Sp Out (1W/8Ω): 0,008%
Intermodulation Distortion(Rated Power, 8Ω):
Aux, Tape, Tuner : 0,01%
Signal-to-Noise Ratio (IHF A Network):
Phono MM (5 mV, Input Shorted): 88 dB
Phono MC (500 μV, Input Shorted): 75 dB
Aux, Tape, Tuner (AM position, Input Shorted): 100 dB
Signal-to-Noise Ratio (IHF A Network):
Phono MM : 72 dB
Phono MC : 74 dB
Aux, Tape, Tuner (AM position): 81 dB
Residual Noise (IHF A Network):  140 μV
Channel Separation (1 kHz):
Phono MM (Input Shorted) : 60 dB
Aux, Tape (5,1 kΩ Shorted) : 60 dB
Low Filter Characteristics (Subsonic, Built-in):  15 Hz -12 dB/oct
FM Section
Tuning Range:  87,5 to 108 MHz
50 dB Quieting Sensitivity (IHF, 75 Ω):
Mono : 1,5 μV 914,8 dBf)
Stereo : 20 μV (37,3 dB)
Usable Sensitivity (30 dB Quieting, 75 Ω, Mono):  0,75 μV (8,8 dBf)
Image Response Ratio:  75 dB
IF Response Ratio:  95 dB
Spurious Ratio:  95 dB
Am Suppression Ratio:  66 dB
Capture Ratio:  1,2 dV (local); 2,5 dB (DX)
Alternate Channel Selectivity (IHF):  35 dB (local); 85 dB (DX)
Signal-to-Noise Ratio (IHF): 
Mono : 88 dB
Stereo : 83 dB
Harmonic Distortion(Local)
Mono (100 Hz / 1 kHz / 6 kHz):  0,05% / 0,05% / 0,1%
Stereo (100 Hz / 1 kHz / 6 kHz):  0,07% / 0,07% / 0,15%
Stereo Separation (IHF, Local):
50 Hz / 1 kHz / 10 kHz : 50 db / 50 dB / 45 dB
Frequency Response:
50 Hz to 10 kHz : ±0,3 dB
30 Hz to 15 kHz : =0,3 dB, -0,5 dB
Subcarrier Product Ratio (IHF):  55 dB
AM Section
Tuning Range:  510 kHz to 1,620 kHz
Usable Sensitivity:  250 μV/m
Selectivity:  25 dB
Signal-to-Noise Ratio:  52 dB
Image Response Ratio:  40 dB
Spurious Response Ratio;  50 dB
Harmonic Distortion (400 Hz):  0,3%
Output level/Impedance (fixed):
FM 100% mod. 1 kHz:  500 mv/5 kΩ
AM 30% mod. 400 Hz:  150 mV/5 kΩ
Power Supply:  AC 110/120/220/240 V 50/60 Hz
Power Consumption:  410 W / 170 W / 680 W (U.C. / R / A)
AC Outlet
Switched x1 : 200 W max.
Unswitched x 2 : 200 W max. Total
Dimensions (W x H x D):  435 x 122 x 386 mm (17-1/8" x 4-13/16" x 15-3/16")
Weight:  11 kg (24 lbs 3 oz)

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