Audio Database

The

LUXMAN L-570
350,000yen(June, 1989 release)

Description
 
The Integrated Amplifier which carried out the digestive development of the know-how for the super-low-pass representation obtained by M-07, the disposal method of the very small signal acquired by C-06 or E-06, etc.

The power amplifier part has adopted the pure Class-A operation.
Since the bias current which was fixed to the maximum output is supplied, there is no variation of the point of operation by a signal, and the high-definition power quality of a Class-A operation no one but has been realized.

Compared with the amplifier of this usual class, the mass large power transformer is adopted as a power-source part no less than 30%.
The constant-voltage regulated power supply of each stage independent coil is adopted, thorough low-impedance-ization is attained, and instant response capacity is improved.
Especially the current capacity to the power stage gives 1.5 times [ usual ] as many margins, and is carrying out super-low-impedance-ization.

The signal path in which it results to a speaker termination has a structure which carried out thorough exclusion of complicated leading about or the excessive part from the input terminal.
Only the selection termination was made the change of the input with the remote switching in the minimum location near an input terminal also including the grounding side, and the nitrogen gas enclosure money contact relay is adopted as a change.
The speaker termination is directly linked with the power stage, without special-purpose-izing without an A/B switching, and also losing even a headphone jack, and passing an excessive circuitry.
Product-line material is using PC-OCC of the measure against a tone quality for the key point.

An absent-resonance bottom chassis is adopted as a bottom chassis, and absent-resonance-ization is conjointly attained with the construction with a symmetric weight balance.

The amplifier for MC cartridges and the amplifier for man-month cartridges are special-purpose-ized, respectively, and are carried independently.
With MC amplifier, the power-source part has realized the very low-noise power source by a low-impedance output by adopting the low-noise reference-voltage power source which combined constant current and a constant voltage by carrying out the parallel using of the super low-noise high gain FET.
Moreover, an equalizer amplifier is also considered as a Class-A operation, and enables the high-definition analog-disk play.

The ultimate Attenuator is adopted as a volume control functionality.
Since the conventional general succession good transformation volume was the way a metals carries out the contact slide of the carbon skin film top, there was a threshold on a tone quality according to the stray current, the contact quality of the material, etc. of a slide part. With however, an ultimate AttenuatorBased on the newly developed slide rotary switch, every piece is mounted on a glass epoxy gilding substrate, respectively, and the non-magnetic-material resistor is used as 32 contact rotary switch type Attenuator constituted from a shielding case by die-casting extrusion material etc.
This is suppressing the tone-quality failure in a volume.

In order to guarantee the stable operation, the Hy Effie Shen See radiator which adopted the fin of the high pure copper of the heat-dissipation effect is newly developed and adopted.

By using everywhere the same material as a resistor and the power amplifier M-07 of a gilding cap, the improvement in a tone quality is aimed at further.
Furthermore, tone-quality measure parts, such as a highly efficient styrene capacitor and a pure Focus type electrolytic capacitor, are adopted.

The tone Compensation is adopted as a tone-quality correction controller.

A sound-recording output is separated from a signal system, and the recording selector for a sound-recording output switching prevents a tone-quality failure in an OFF location.

It is possible to have adopted the line phase sensor and to unite correctly a power-source polarity (orientation which

Rear
Internal
Star
Ultimate
ハイエフィ
Absent-resonance ケミコン Power

Rating of a mode
Form Integrated amplifier
Effective output 50W+50W (8 ohms, a Class-A operation, both channel simultaneous operation)
THD 0.01% or less (8 ohms, an Output power, 20Hz - 20kHz)
Cross modulation distortion 0.01% or less (8 ohms, 60Hz:7kHz=4:1, Direct)
Input sensitivity/impedance Phono man month: 2.5mV/50kohm
Phono MC: 100 microvolts/100 ohms
compact disk, Tuner, Line1, 2, DAT/Tape1, Tape2, 3, Processor:150mV/50kohm
Balance/Line: 150mV/50kohm
SN ratio (IHF-A correction)
Input short-circuit
Phono man month: 86dB or more
Phono MC: 74dB or more
compact disk, Tuner, Line1, 2, DAT/Tape1, Tape2, 3:108dB or more
Frequency characteristic Phono man month/MC: Less than [ 20Hz-20kHz±0.3dB ]
compact disk, Tuner, Line, Tape: 100kHz [ 10Hz - ]-less than 1dB
Tone Compensation The maximum variation: ±4.5dB
Power source AC100V, 50Hz/60Hz
Power consumption 270W (based on a convention of Electrical Appliance and Material Control Law)
AC outlet Switched: Two lines
Unswitched: One line
Dimensions Width 438x height 176x depth of 467mm
Weight 30kg