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 speakersare 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-5


The L-5 represents the finest standarts of design and craftsmanship, but the proof is in the handing - and in the listening.

The Luxman L-5 is an integrated amplifier, employng DC amp configuration at the power ampmsection. The power output is mighty 60 wats minimum continuos per channel both channels driven into 8 ohm loads, from 20 Hz to 20.000 Hz with no more than 0.03% total harmonic distortion.
Although built with exremely sophisticated engineering, it's concept is quite simple.
At the power amp section, Lux's innovative concept of "Realtime Processed DC Amp"is featured, which contributes to perfectly remove such transient and phase distortion as is triggered by time lag. While at the preamplifier section, the equalizer circuit employs a 3 stage direct coupled circuit, which permits perfect linearity and high phono overload voltage of 150mV (RMS, 1 kHz).

The power amplifier part has adopted DC amplifier stream composition which removed the time constant circuitry in the NFB loop which is one of the causes which worsens a transient response. More over, about the problem of the drift over a variation of external requirements, such as supply voltage and a temperature, for every main point, an electric and an organization device are given and are suppressed on the level which can be disregarded.
To the power transistor, the destructive-proof intensity selected carefully highly what has high high region cut-off frequency, and EBT (emitter ballast and transistor) is adopted as a driver transistor. Furthermore, the stable high region property with little notching distortion is realized for the pre-driver stage a constant voltage and by carrying out a constant current drive.

The three-step hardwired-connection equalizer circuitry, the two-step hardwired-connection flat amplifier circuitry, and the two-step hardwired-connection tone amplifier circuitry are adopted as a preamplifier part.
In order to attain further more much more low-distortion-izing and high SN ratio-ization, while carrying out the careful selection using of the super-low-noise type with few collector output capacitances with a linear region improve a circuitry fundamentally and large to a using transistor, and high and high region cut-off frequency,It drives with a negative power source, the electric current of many of Japanese predefinedpredefineds is further sent through each circuitry, and low impedance-ization is attained.

The large-sized Troy Dahl power transformer is adopted as a power-source part.
Moreover, a preamplifier part, the predrive stage, and the power stage are another formulated, the efficiency ratio of a power source is raised, and the improvement in a distortion property is aimed at.
In order to advance positively shortest-distance-izing from each input terminal to an amplifier circuitry, and exclusion of shielding wire and to aim at the improvement in a performance, it is dared to form the input terminal plate in the bottom.

The LUX scheme NF type is adopted as a tone control, and also the object for high regions and the method of low-pass have prepared the curving point frequency switchover 2 points every. A defeet is also possible for this tone control.
In others, filter circuits, such as a Subsonic Filter, a low cut-off filter, and a high cut-off filter, a monitor & dubbing functionality, a speaker selector, a loudness control, -20dB audio Attenuator, etc. are carried.

Succession effective output (both channel operation): 60W+60W (8 ohms, 20Hz - 20kHz)
THD (20Hz - 20kHz): 0.02% or less (8ohm, 60W)
Cross modulation distortion (60Hz:7kHz=4:1): 0.02% or less (8ohm, 60W)
Output bandwidth: 10Hz - -80kHz three dB (8 ohms, 0.05%)
Frequency characteristic: Phono1, less than [ 2:20Hz-20kHz±0.4dB ],
Tuner, Aux, Monitor1, 100kHz [ 2:10Hz - ]-less than 1dB,
Main in: 100kHz [ 10Hz - ]-less than 1dB
Input sensitivity/impedance: Phono1, 2:2.5mV/50kohm,
Tuner, Aux, Monitor1, 2:150mV/50kohm,
Main in: 1.25V/50kohm
SN ratio (IHF-A correction) Input short-circuit: Phono1, 2:80dB or more,
Tuner, Aux, Monitor1, 2:100dB or more, Main in:100dB
Dumping factor: 70 (an 8-ohm load intensity, 1kHz)
Tone control: With a curving [ LUX scheme NF type ] point frequency switching (defeat is possible), The point curving [ low-pass ]: 200Hz, 400Hz
The point curving [ high region ]: 2kHz, 4kHz
Filter: Subsonic speed: 15Hz-6dB / oct
A low cut: 70Hz-6dB / oct
A high cut: 7kHz-6dB / oct
Supply voltage: AC100V, 50Hz/60Hz
Power consumption (Electrical Appliance and Material Control Law): 170W
Dimensions: Width 438x height 105x depth of 313mm
Weight: 9.5kg

Nessun commento: