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





Luxman R-113

 "Ultimate Power" Recivers
The new R-113, R-115 and R-117 receivers are excellent examples of Luxman's  "Ultimate Power" amplifier designs.
The R-113, the most affordable model in Luxman's new line of receivers, includes a high-speed dynamic amplifier that delivers up to 100 dynamic watts into a 2 ohms load. And a high-efficiency toroidal power transformer is coupled with high-energy storage capacitors to provide the dynamics and steady state reserves necessary for the most demanding music transients. 
All three receivers employ voltage amplifications circuitry that ensures the "tube-like", musical warmth of traditional Luxman amplifiers.  In addition,  CD Straight circuitry routes CD input signals past all signal processor and switching functions to provide optimum accuracy, imaging and impact.
Complementing this performance are an array of advanced features that lend versatility and precise control over a wide range of functions .  
 Additional Features
20 AM/FM Random Access memories
Auto Seek Tuning
AM/FM memory Scan
Cable-ready Fm Fine-tuning
FM Muting
CD Straight Switches
Tape Monitor Switch
Signal processor jack/Switch
1 Pair Pre-out Jacks
Speakers Terminals Accept Single Banana
Specifications R-113
Rated Continuous Power per Channel (20 -20,000 Hz, 8 Ω):  35 W
Dynamic Power per Channel:
50 W at 8 Ω
84 W at 4 Ω
100 W at 2 Ω
Dymanic Headroom per Channel at 8 Ω:  1,5 dB
THD at rated Continuous Power:  0,085%
Input Impedance (1 kHz):
Phono MM :  47 k Ω +25-20%
Tape 1, 2 :  47 k Ω +25-20%
CD, Aux, Video :  47 k Ω +25-20%
Input Sensitivity (1 kHz, Rated Power= 40W Output)
Phono MM :  2,5 mV ±0,5 mV
Tape 1, 2 :  150 mV ±20 mV
CD, Aux, Video :  150 mV ±20 mV
Frequency Response : 
Phono :  100 Hz ±0,5 dB
Phono : 10 kHz ±0,5 dB
CD, Aux :  10 Hz - 50 kHz ±2 dB
Phono Overload (1 kHz, Rec. Output 0,08% THD):  120 mV
Signal-to-Noise Ratio (input Shorted)
Phono MM :  80 dB
Tape 1, 2 :  86 dB
CD, Aux, Video :  86 dB
Cross Talk (1 kHz):  55 dB
AM Section
Frequency Range:  530 -1620 kHz
IF Frequency:  450 kHz
Usable Sensitivity (20 dB S/N):  57,5 dB/m
Signal-to-Noise Ratio : 45 dB
IF Response Ratio (603 kHz) : 50 dB
Image Response Ratio(1,400 kHz) : 35 dB
Distortion : 0,5 %
Frequency Response (120 Hz - 2 kHz):  ±3 dB
Output Level:  240 mV ±3 db
FM Section
Frequency Range:  87,9 - 17,9 MHz
Intermediate Frequency:  10,7 MHz
Usable Sensitivity (Mono 3%): 17,2 dBf
Signal-to-Noise Ratio : 68 dB
Frequency Response (30- 15,000 Hz):   +1 -2,5 dB
Distortion (1 kHz ): 0,4%
Stereo Separation:  40 dB
Image Response Ratio: 32 dB
Quieting Sensitivity:  44 dBf
Output Level:  610 mV ±3 dB
General
Power Consumption:  200 W
Power Supply:  120 V - 220V 50/60 Hz
Semiconductors:  96 Transistors; 67 Diodes; 5 Zener Diodes; 9 FET's; 12 IC's
Dimensions (W x H x D):  438 x 110 x 343 mm

Weight:  6,1 kg

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