Features Of This Unit - Luxman L-507uX MARKII Owner's Manual

Features of This Unit

New LECUA1000 — LUXMAN Electronically
Controlled Ultimate Attenuator 1000
New LECUA1000, which is the integration of an amplifier
circuit and a high-precision attenuator by electronically-con-
trolled fixed resistance switcheovers is mounted. Further fine
sound volume adjustable without deterioration of sound qual-
ity from 0 dB through −87 dB
ODNF — Only Distortion Negative
Feedback —
The output section features LUXMAN's original distortion-on-
ly negative feedback system which allows for a high speed
primary slew rate and ultra-wide audio bandwidth. Only dis-
tortion generated in the amplification process is fed back for
cancellation. This maintains pure, high quality sound repro-
duction in the main amplifier section.
The latest version, ODNF 4.0 has achieved low impedance
and a high signal to noise ratio for the transmission circuits
thanks to the paralleled first stage and Darlington equipped
second stage amplification circuits. Also the input stage error
detection circuits are triple-paralleled to moderate frequency
characteristics and noise.
3 parallel push-pull output stages
3 parallel push-pull structure of bipolar transistors.
Rated output of 110 W+110 W (8Ω)
Highly stable power supply
This unit features a highly enhanced and stable power sup-
ply featuring a large capacity EI core power transformer, four
custom 10,000μF blocking capacitors for the power amplifier
stage.
2
Parallel speaker relays
This unit is equipped with 2 large parallel speaker relays with
a low resistance value to reduce the impedance of the speak-
er output lines.
Beeline construction
LUXMAN's "Beeline" construction ensures that the audio
signal path takes the optimum shortest route from input to
speaker output.
Selector switch IC
Selector switch IC of high sound quality, which is used in the
top-end control amplifier, C-900u, improves the separation
and crosstalk performances.
Schottky barrier diodes
By using Schottky barrier diodes, manufactured by Nihon
Inter Electronics Corporation, this unit achieves higher DC
conversion efficiency in the rectifier circuit and much less
switching noise.
Original LUXMAN's OFC wiring
Our original un-plated OFC wiring with spirally wrapped shield-
ing is used for all internal connections to ensure smooth, pure
signal transmission.
Non-angled circuitry
After careful consideration of the delicate nature of audio sig-
nal flow, non-angled circuit board tracking has been adopted
to achieve smooth signal transmission.