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-115

 Luxman has perfected sonic reproduction with amplifiers that capture the best of both worlds; the warm musicality associated with vacuum tube amplifiers, plus the high power needed for today's digital source material. In other words, "guality plus quantity".
For over 60 years, Luxman components have earned the highest accolades for their musical warmth and transparency. In the past, however, Luxman's amplifiers were designed to deliver optimum results with analog source material and conventional loudspeaker design. Now, the increased popularity of the compact disc format has created a new demand for higher power output.

The Digital Era
Compact discs have a dynamic range that far exceeds that of phonograph records and cassette tapes. This requires amplifiers with greater reserve power to smoothly handle the dramatic changes in dynamic impact.
In addition, the clarity and wider dynamics of CD's have encouraged speaker manufactures to introduce new design with improved sonic performance. However, several of these new speaker designs expose amplifiers to extremely low impedance loads that demand higher current output.  Plus the CD's remarkable sonic realism has also ignited a whole interest in listening to music that, in many households, has resulted in multip;e speaker arrangements and multiple-room speaker installations. These combined loads pose additional threats to the stability and clarity of an amplifier with insufficient reserve power.
 The new Luxman Amplifiers
To ensure the sonic integrity of CDs into a variety of speaker loads, an amplifier must be able to deliver high dynamic power. In answer to this, Luxman has incorporated massive power supplies with high energy reserves to ensure distortion-free transients.  High-current, bipolar transistors are then carefully selected in matched pairs to preserve total sonic integrity at high dynamic levels.  This rugged design technique accomodates the high demands of both digital software and low impedance loads. But high power is only half the story …

Ultimate Fidelity
The heart of Luxman amplifiers is still the warm, musical feeling that has resulted from decades of research on how vaccum tube amplifiers reproduce music so faithfully. To achieve this same type of "tube-like" transparency and naturalness, Luxman transistor amplifiers employ voltage driven amplification configurations that perform the main current conversion only at the output.  In addition, sophisticated circuit designs, including Duo-βeta circuitry, STAR circuit patterns and LED bias circuitry, are utilized to obtain that extra degree of musical purity that conventional amplifiers ignore.

Ultimate Power
The best of both worlds. It's the purity and musical warmth of the original source plus the high dynamic power output that combine to ensure total sonic integrity at all volume levels. In today's  luxman amplifiers, we call it  "Ultimate Power".

"Ultimate Power" Recivers
The new R-115, R-117 and R-113 receivers are excellent examples of Luxman's  "Ultimate Power" amplifier designs.
The R-115 rated at 70 watts, can provide up to 200 dynamic watts into 4 ohms, and 270 watts into 2 ohms loads. And, with its heavy, double-shielded power transformer and high efficiency, it provides a full 3 dB of dynamic headroom. 
Both incorporate a new 5-gang varactor, dual-gate MOSFET FM front end, with automatic hi-blend circuitry, that ensures clean, distortion-free FM performance.
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 .  Both the R-115 even include a hand-held remote that can operate a complete system of components.

The Ultimate Upgrade

All three Luxman receivers include pre-out connections for upgrading in power output to the awesome M-117 power amplifier.
 Additional Features
20 AM/FM Random Access memories
Auto Seek Tuning
AM/FM memory Scan
Cable-ready Fm Fine-tuning
FM Muting
FM IF bandwidth switch
CD Straight Switches
Tone Defeat Switch
Tape Monitor Switch
Multi-function Remote Control
Unified Remote DIN Jacks
Unified Remote Serial Output jack
Remote Eye Connection
Signal processor jack/Switch
1 Pair Pre-out Jacks
Speakers Terminals Accept Single Banana
Specifications R-115 
Rated Continuous Power per Channel (20 -20,000 Hz, 8 Ω):  70 W
Dynamic Power per Channel:
140 W at 8 Ω
200 W at 4 Ω
270 W at 2 Ω
Dymanic Headroom per Channel at 8 Ω:  3 dB
THD at rated Continuous Power:  0,03% 
Input Impedance (1 kHz):
Phono MM :  47 k Ω ±10%
Tape 1, 2 :  47 k Ω ±10%
CD, Video :  47 k Ω ±10%
Sensitivity for Rated Power:
Phono MM :  2,5 mV ±10%
Tape 1, 2 :  150 mV ±10%
CD, Video :  150 mV ±10%
Frequency Response (Tape, CD, Video):  20 Hz - 20 kHz ±0,3 dB;  5 Hz - 140 kHz +1 -3 dB
Signal-to-Noise Ratio
Output; Tape Out (A-Weighted):
Phono MM (5 mV Input Shorted) :  82 dB
Output; Speaker Out at Rated Power (A-Weighted):
Tape 1, 2 (150 mV Input Shorted) :  100 dB
CD, Video (150 mV Input Shorted) :  100 dB
Cross Talk (10 kHz):  60 dB
Video Frequency Response (75 Ω Terminated):  10 Hz - 6 MHz ±1 dB
Video Input/Output (75 Ω Terminated):  1,0 Vp-p ±5%
AM Section
Frequency Range:  530 -1620 kHz
IF Frequency:  450 kHz
Quieting Sensitivity (20 dB): 
600 kHz : 1000 µV/m
1,000 kHz : 700 µV/m
1,400 kHz : 700 µV/m
Signal-to-Noise Ratio (100 mV Input):  1,000 kHz : 50 dB
Selectivity (at S/N 20 dB Input ±10 kHz):  1,000 kHz : 35 dB
IF Rejection Ratio:  600 kHz : 50 dB
Image Rejection Ratio:  1,4000 kHz : 40 dB
Distortion (THD at 100 mV Input 30% mod):  1,000 kHz : 0,5 %
FM Section
Frequency Range:  87,9 - 17,9 MHz
Usable Sensitivity:  98,1 MHz : 13,2 dBf
Quieting Sensitivity (50 dB):  98,1 MHz : 15,2 dBF
S/N Ratio (65 dBf Input):  98,1 Mhz : 79 dB
Frequency Response (65 dBf Input, 20- 15,000 Hz):  98,1 MHz : +0,5 -1,0 dB
Distortion (65 dBf Input):  98,1 MHz : 0,08%
Captire Ratio:  98,1 MHz : 1,8 dB
Alternate Channel Selectivity (Wide / Narrow):  98,1 MHz : 50 dB / 75 dB
Image Response Ratio:  106,1 Mhz : 80 dB
IF Response Ratio:  90,1 : 100 dB
Power Consumption:  160 W
Power Supply:  120 V - 220V 50/60 Hz
Semiconductors:  109 Transistors; 96 Diodes; 15 Zener Diodes; 28 IC's
Dimensions (W x H x D):  438 x 139 x 424 mm

Weight:  11,5 kg

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