Solid State
Intergrated Amplifier
A tremendous
amount of time and energy was spent to achieve excellent tonal quality through
unique and innovative circuit design. That combined with sophisicated styling
makes these units beautiful to the ear and eye.
The power
amplifier section is a whole-stage direct-coupled OCL system and the output
stage is pure complementary. The differential amplifier circuit is composed of
2 stages to ensure DC stability throughout the entire power amplifier section.
Selected
transistors are used especially at the 1st differential stage which have high
treble cut-off frequency and large collector output capacity. At the same time,
the pre-driver stage is driven by constant current so that crossover distortion
triggered by class "B" operation of the output stage is suppressed.
This is a technical feature common to all current Luc amplifiers as crossover
distortion could impair sound quality and should be minimized.
An important
feature of the pre-amplifier section is the equalizer circuit wherein the same
basic circuit as the C-1000 control center is used. The operation amplifier is
composed of a special IC which inherently has high loop gain and the closest
frequency to that of the RIAA equalizer,, which ensures unconditional stability
and overall improvement of various characteristics such as distortion, etc,
throughout the entire bandwidth with sufficient amount of negative feedback.
The buffer
amplifiers incorporate an orthodox 2-stage direct-coupled circuit and also
LUX's well known NF (Negative Feedback) type potentiometers for the tone
controls. The turn-over (roll-off) frequency for tone control is
interchangeable in 2 steps with a useful "defeat" position.
We know the
true measurements of minimum performance standards of a quality amplifier must
be of a very high level. However, these figures are not the only requirements.
Despite
every effort to make amplifier design a pure science one amplifier among many
with similar absolute specification can still have, relatively, far better
sound quality.
The reson
there are more comprehensive theories of amplifier design which account for
such problems as harmonic intermodulation, and notch distortion, stbility,
filters, and equalization as they relate to statements of power.
Whatever the
scientific theory, Lux conducts the most detailed listening test with engineers
and musicians in different fields from what is considered good in article.
The Lux
sound is not only a science but an art.
Specifications
Power
Output : 45 watts minimum continuous per
channel (into 8 Ω, both channel
driven, 20 - 20,000 Hz , at no more than 0,1% T.H.D.))
Total Harmonic Distortion: no more than 0,05%
I.M.
Distortion: no more than 0,1% (8 Ω loads, 45 W/ch 60 Hz : 7 kHz = 4 : 1)
Frequency
Response: 5 - 50,000 Hz (-1 dB)
Input
Sensitivity:
Phono 1 and
2 : 2,6 mV
Tuner, Aux
1, 2 : 120 mV
Input
Impedance:
Phono
1 and 2 : 65 k Ω
Tuner,
Aux 1, 2 : 50 k Ω
Monitor 1
and 2 : 50 k Ω
Signal-to-Noise
Ratio:
Phono 1 and
2 : better than 65 dB
Tuner, Aux1,
2 : better than 80 dB
Monitor 1
and 2 : better than 80 k Ω
Residual Hum
and Noise: no more than 1,2 mV
Crosstalk:
Phono
1 and 2 : -60 k Ω
Tuner,
Aux 1, 2 : -65 k Ω
Monitor 1
and 2 : -65 k Ω
Tone
Control: Lux NF type with turnover
frequency selector
Treble : 3
kHz, 6 kHz defeat
Bass : 150
Hz, 300 Hz defeat
Filters:
Low Cut
(Subsonic) : 20 Hz
High Cut
: 70 Hz at 7 kHz, 12 kHz
Damping
Factor: 40 dB (8 Ω)
Power
Supply: 110-120, 220-140 V 50/60 Hz
Power
Consumption: 200 W (8 Ω, max output, both channel driven); 150 W (CSA, UL rated)
Dimensions
(W x H x D): 450 x 160 x 300 mm
(17-23/32" x 6-5/16" x 11-13/16")
Weight: 10,1 kg (22,2 lbs) net
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