LUXMAN L-5 89,800yen(September, 1978 release)

The Integrated Amplifier which investigated the quality of all fields, such as a performance side, an organization side, a functional side, and a design side, and was developed.

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. Moreover, 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.

A separation using of a preamplifier part and a power amplifier part is possible. 

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LUXMAN L-3 59,800yen(October, 1978 release)

The Integrated Amplifier which pursued the tone quality at the time of Loule Bell by the low power output.

The pure complimentary OCL scheme is adopted as a power amplifier part, and also the element itself, such as a power transistor, is fully examined,While especially a high region barrier property selects carefully and uses what has a high and few collector output capacitance, the operating point is set as a fraction with the sufficient linearity of each transistor, and the modification of a distortion property covering all the bands is aimed at.

A two-step direct coupling system is adopted as the equalizer circuitry of a preamplifier part, a flat amplifier circuitry, and a tone amplifier circuitry, the electric current sent through each circuitry is increased, low impedance-ization is attained, and the modification of a high region property is aimed at.
Furthermore, the modification of the SN ratio is aimed at by selecting carefully and using the super-low-noise type for a transistor, if a circuitry is constituted, and also driving with a negative power source.

In order to perform shortest-distance-izing of each input system, and exclusion of shielding wire, it is the layout which formed the input terminal plate in the bottom.
Moreover, the simplification of a signal path is attained and a flat property and high SN ratio-ization are attained.

Functionalities, such as a LUX scheme NF type tone control, a monitor & dubbing functionality with two tape decks, height each filter, and a loudness control, are carried. 

Form	Integrated amplifier
Succession effective output (both channel operation)	35W+35W (8 ohms, 20Hz - 20kHz)
THD (20Hz - 20kHz)	0.04% or less (8ohm, 35W)
Cross modulation distortion (60Hz:7kHz=4:1)	0.08% or less (8ohm, 35W)
Output bandwidth	10Hz - -60kHz three dB (0.1% of distortion)
Frequency characteristic	60kHz [ 15Hz - ]-less than 1dB
Input sensitivity/impedance	Phono: 2.5mV/50kohm Tuner, Aux:145mV/50kohm
SN ratio (an IHF-A correction, input short-circuit)	Phono: 72dB or more Tuner, Aux: 95dB or more
Dumping factor	65 (an 8-ohm load intensity, 1kHz) or more
Tone control	LUX scheme NF type (the right and left ch, independent level control)
Filter	Subsonic speed: 25Hz-6dB / oct A high cut: 7kHz-6dB / oct
Attachment	Tapes monitor circuitry (two lines) Tapes dubbing circuitry Loudness control Speaker selector (two lines) Mode switch
AC outlet	Power-switch interlock: One line Power-switch un-interlocking.: One line
Supply voltage	AC100V, 50Hz/60Hz
Power consumption (Electrical Appliance and Material Control Law)	100W
Dimensions	Width 438x height 105x depth of 313mm
Weight	8kg

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