Status
Series Duo-β Single-Stage Stereo
Integrated Amplifier Luxman L-525 (1981)
High Dynamic Power
What is crucial with
an amp is whether or not it can feed such quality power that satisfactorily
drives the loudspeaker having inherently complex, non-linear impedance
characteristics. With overall reinforcement especially at the output and power
supply sections, the L-525 provides an unprcedented high dynamic power for
absolutely stable operation even into low impedance loads such as 4 and 2 ohms.
Furthermore , an ideal class "A" operation is procured up to a normal
listening level.
High Quality Power
to Exhibit Its Real Value at Low Output Level
Truly high-quality
power quite contrary to that unaccompanied by intrinsic quality and merely
stated "high" in the specs. Such affluent 110W + 110W provide not
only instant, treal-time response to the sharp, abrupt rise of the large signal
input but vivid sound image at a low volume level.
Tone Control to
Offer Smooth, Natural Variation Response.
With 6 turnover
frequencies at each of the treble and bass ranges, you can create your
favourite response curve most natural in auditory sensation. Noises and other sonic deterioration are
skillfully prevented thanks to the NFb circuitry of the power amp section.
EQ to Take out Full
Advantage of MC Cartridge
A highly dependable
symmetric differential push-pull equalliser by means of high gm, low-noise FET
exclusively Developed for MC headamp offers superb sonic quality with high S/N
and low distortion, which makes it possible to take out the full potential of
the MC cartridges on the marketplace by simple, direct connection.
Affluent Power
Supply.
The mighty power
supply section composed by the EI core transformer of large capacitance and
large smoothing chemical capacitors provides instant large current in low
impedance.
Convenient Warm-Up
Indicator
In a certain lapse
of time after the power is turned on, the warm-up indicator goes out to show
that the amp is put into an operational condition.
Perfect Compliance
with Digital and Analogue Source.
Both of the analogue
and digital sources are granted with their own personality in characteristics.
To cope with the sublime treble recording characteristics of analogue disc, the
linearity of the head amp (L-560) and the equaliser amp (L-525) are dramatically
ameliorated, whereas to comply with the ultra wide dynamic range of CD source,
the power amp is substantially solidified to reproduce the ultra heavy bass in
an explosive way.
Specifications
Power
output: 110 W +110 W at 8Ω (both channels driven, 20 - 20,000 Hz)
Dynamic
Power: 230 W at 4Ω
T.H.D.: no more than 0,007% (8Ω, 20 - 20,000 Hz, -3 dB)
Rated
IM: no more than 0,007% (8Ω, -3 dB, 60 Hz:7 Khz = 4:1)
Input Sensitivity
& Impedance:
Phono
MM: 2 mV/50 kΩ
Phono
MC: 100μV/40Ω, 100Ω, 300Ω
Tuner,
Line, CD: 150 mV/40 kΩ
Main-in: 150 mV/47 kΩ
Signal-to-Noise
ratio (IHF-A weighted):
Phono MM: better than 85 dB (input 5 mV)
Phono
MC: better than 70 dB (input 250μV)
Tuner, Line,
CD: better than 110 dB (input
short-circuited)
Frequency Response:
Phono MM/MC: 20 - 20,000 Hz, ±0,3 dB
Tuner, Line,
CD: 10 - 100,000 Hz -1 dB
Main-in: 10 - 100,000 Hz, -1 dB
Tone control:
Max. variable
amount: ±9 dB
Bass turnover
frequencies: 77 Hz, 120 Hz, 200 Hz, 330
Hz, 550 Hz, 880 Hz
Treble turnover
frequencies: 880 Hz, 1.5 kHz, 2.5 kHz, 4
kHz, 6.5 kHz, 10 kHz
Pre Out: 150 mV
Additional features:
Subsonic filter (15
Hz) and High-cut filter (9 kHz);
Pre-heat switch;
Warm-up indicator; Phono-straight
switch;
Signal-off switch;
Tone-in switch; Recording switch; Tape monitor and tape dubbing;
Speaker selector,
etc.
Dimensions (W x H x
D): 453 x 162 x 470 mm
Weight: 14,3 kg