Luxman
"Laboratory Reference Series"
5K50 Exclusive Cassette tape
The development of
magnetic tape has been marking remarkable progress of late, and nowadays high
quality tape is made available for Hi Fi use. Various problems have been
brought to light as the quality of deck is improved, in the mechanism of tape
especially in correlation between deck and cassette tape. To solve such
problems, LUX prepared an exclusive cassette tape having many unique features.
SKEW Adjustment
Facility
This device prevents
deterioration of tonal quality caused by deviation of the azimuth, improving
the frequency response while maintaining the proper volume and phase balance
between 2 channels. In the case of a 3 head deck, the optimum azimuth of the record
head can be obtained for both A and B sides of the tape. For reproduction of
the tapes recorded by other decks, adjustment of the playback azimuth is
possible. The adjustment can be done by a screwdriver 9usually to be used at
the click point)
Metal Tape Guide
Stainless steel is
adoped for the tape quide to improve tape running stability, which contributes
to realize excellent articulation of the stereo image, since minute phase-shift
between the channels are reduced. With the conventional plastic guide, the articulation
of image is not satisfactory because of its large friction, the alteration of
friction coefficient due to the heat caused by operation, or the change of
phase characteristic between the channels caused by adherence and fall-off of
dust.
Wide Pad and New
Holding Mechanism
A wide pad (7 mm) is
employed to perfectly cover teh record
and playback heads of a combination head. The new holding mechanism using a
roll spring gives constant pressure to the tape, ensuring stable azimuth against
repetition of teh Play and the Stop operation.
4-Guideroller System
A new 4-guideroller
system is adopted placing additional rollers in lieu of conventional plastic
guide-pins, which not only prevents torque loss caused by fixed pins but offers
constant back-tension.
Sensing Roller for
tape Transport Time
To sense the tape
running time optically, a high precision roller is featured with a reflection
plate, which makes it possible to read the real time used for recording or
playback with LUX decks models 5K50 and K-12.
Quality and Kinds of
Tape
Top grade tape is
selected for the cassettes, which remarkably reduces drop outs. To ensure the
supreme performance, material of high precision make is used as shell (hub) as
well as other internal components.
Specifications
Heads:
1 x ferrite Record
Head
1 x sendust Playback
head
1 x ferrite Erese
Head
Drive Motor:
Capstan drive : 1 x
Quartz Locked D. D. motor
Reel drive : 2 x
Coreless motor
Tape Drive: Dual caapstan system
Recording
System: Bridge recording by Bias Current
and Signal Current
Amplifier: DC-amp Configuration
S/N Ratio (Dolby
off):
CrO₂ tape : better than 58 dB
LH tape : better than 55 dB
S/N Ratio (Dolby
on):
CrO₂ tape : better than 67 dB
LH tape : better than 65 dB
Frequency Response:
CrO₂ Tape : 30 Hz -
18,000 Hz, ±3 dB
LH Tape : 30 Hz -
16,000 Hz, ±3 dB
Overall
Distortion: no more than 1,2% (LH tape,
1kHz, 0dB)
Real Analized
Distortion: no more than 0,3% (LH tape,
1kHz, 0dB)
Separation: more than 35 dB (1kHz, 0dB)
Crosstalk: more than -60 dB (1kHz, 0dB)
Input Sensitivity:
Line : 100 mV
Microphone
: 0,25 mV (recommended impedance 600 - 10 kΩ)
DIN :
2 mV/1 kΩ
Output level: 580 mV
Headphone
Output: 1 mW (8Ω)
Semiconductors Used:
Transistors : 141;
Diode : 111;
IC : 48
Power
Consumption: 75 W
Dimensions (W x H x
D): 442 x 132 x 362 mm (17-13/32" x
5-3/16" x 14-1/4")
Weight: 12,5 kg (27,5 lbs) net
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