Features Of This Unit - Luxman C-900u Owner's Manual

Features of This Unit

LECUA1000 — LUXMAN Electric
Controlled Ultimate Attenuator 1000
Application of the system to obtain attenuation by combining
2 fixed resistances connected in series has improved the effi-
ciency of the LECUA1000 attenuator used in C-1000f.
The shortest signaling route has been achieved by the in-
tegrated amplifier circuit thanks to the 3D structure of the
mounting boards.
Controlling LECUA1000 to the level equal to the volume po-
sition detected by a microprocessor has achieved the oper-
ation feeling similar to our conventional sliding-type volume
controls.
ODNF - Only Distortion Negative Feedback -
The amplification feedback circuit that has acquired the high-
speed primary slew rate and ultra-wide bandwidth by feeding
back only distortion components generated during amplifica-
tion to maintain the pure sound quality of the main-amplifier
that is almost non-feedback.
The newest version, 4.0, has achieved the low impedance
and high S/N ratio of the transmission circuit thanks to 4-par-
allelized first stage and Darlington-connected second stage
of the amplification circuit.
In addition, the input stages of the error detection circuit are
3-parallelized to improve distortion and noise.
2
High-inertia power supply
High-inertia power supply circuit that combines a large-ca-
pacity OI-core-type power transformer with customizable
3,300μF × 4 capacitor blocks.
Schottky barrier diode
Application of schottky barrier diode manufactured by Nihon
Inter Electronics Corporation that has less switching noises
and higher conversion efficiency to the DC voltage for the
power supply rectifier circuit.
LUXMAN's original OFC wires
Our original OFC wires are used in the internal wiring to
achieve smooth signal transmission thanks to the spiral wrap
shielding on each core and the non-plating process on the
core wire.
Loopless chassis structure
This unit consists of the independent construction of a
loopless chassis to eliminate increased ground impedance
caused by chassis current.