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 L-525

 Status Series Duo-β Single-Stage Stereo Integrated Amplifier Luxman L-525 (1981)
High Dynamic Power
What is crucial with an amp is whether or not it can feed such quality power that satisfactorily drives the loudspeaker having inherently complex, non-linear impedance characteristics. With overall reinforcement especially at the output and power supply sections, the L-525 provides an unprcedented high dynamic power for absolutely stable operation even into low impedance loads such as 4 and 2 ohms. Furthermore , an ideal class "A" operation is procured up to a normal listening level.

High Quality Power to Exhibit Its Real Value at Low Output Level
Truly high-quality power quite contrary to that unaccompanied by intrinsic quality and merely stated "high" in the specs. Such affluent 110W + 110W provide not only instant, treal-time response to the sharp, abrupt rise of the large signal input but vivid sound image at a low volume level.

Tone Control to Offer Smooth, Natural Variation Response.
With 6 turnover frequencies at each of the treble and bass ranges, you can create your favourite response curve most natural in auditory sensation.  Noises and other sonic deterioration are skillfully prevented thanks to the NFb circuitry of the power amp section.

 EQ to Take out Full Advantage of MC Cartridge
A highly dependable symmetric differential push-pull equalliser by means of high gm, low-noise FET exclusively Developed for MC headamp offers superb sonic quality with high S/N and low distortion, which makes it possible to take out the full potential of the MC cartridges on the marketplace by simple, direct connection.

Affluent Power Supply.
The mighty power supply section composed by the EI core transformer of large capacitance and large smoothing chemical capacitors provides instant large current in low impedance.

Convenient Warm-Up Indicator
In a certain lapse of time after the power is turned on, the warm-up indicator goes out to show that the amp is put into an operational condition.

Perfect Compliance with Digital and Analogue Source.
Both of the analogue and digital sources are granted with their own personality in characteristics. To cope with the sublime treble recording characteristics of analogue disc, the linearity of the head amp (L-560) and the equaliser amp (L-525) are dramatically ameliorated, whereas to comply with the ultra wide dynamic range of CD source, the power amp is substantially solidified to reproduce the ultra heavy bass in an explosive way.

Power output:  110 W +110 W at 8Ω (both channels driven, 20  - 20,000 Hz)
Dynamic Power:  230 W at 4Ω
T.H.D.:  no more than 0,007% (8Ω, 20 - 20,000 Hz, -3 dB)
Rated IM:  no more than 0,007% (8Ω, -3 dB, 60 Hz:7 Khz = 4:1)
Input Sensitivity & Impedance:
Phono MM:  2 mV/50 kΩ
Phono MC:  100μV/40Ω, 100Ω, 300Ω
Tuner, Line, CD:  150 mV/40 kΩ
Main-in:  150 mV/47 kΩ
Signal-to-Noise ratio (IHF-A weighted):
Phono MM:  better than 85 dB (input 5 mV)
Phono MC:  better than 70 dB (input 250μV)
Tuner, Line, CD:  better than 110 dB (input short-circuited)
Frequency Response:
Phono MM/MC:  20 - 20,000 Hz,  ±0,3 dB
Tuner, Line, CD:  10 - 100,000 Hz  -1 dB
Main-in:  10 - 100,000 Hz,  -1 dB
Tone control:
Max. variable amount:  ±9 dB
Bass turnover frequencies:   77 Hz, 120 Hz, 200 Hz, 330 Hz, 550 Hz, 880 Hz
Treble turnover frequencies:  880 Hz, 1.5 kHz, 2.5 kHz, 4 kHz, 6.5 kHz, 10 kHz
Pre Out:  150 mV
Additional features:
Subsonic filter (15 Hz) and High-cut filter (9 kHz);
Pre-heat switch; Warm-up indicator; Phono-straight  switch;
Signal-off switch; Tone-in switch; Recording switch; Tape monitor and tape dubbing;
Speaker selector, etc.
Dimensions (W x H x D):  453 x 162 x 470 mm
Weight:  14,3 kg

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