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

Features of This Unit

New LECUA 1000 — LUXMAN Electronically
Controlled Ultimate Attenuator 1000
New LECUA 1000 attenuator is integrated into the amplifier
circuitry. Electrically controlled fixed resistance switching
enables fine sound volume adjustments from 0 dB through
–87 dB with no deterioration in sound quality over the full
range of the volume control.
LIFES — Luxman Integrated Feedback
Engine System —
ODNF, LUXMAN's original amplification feedback circuitry,
has been renewed, and LIFES, our newly developed feedback
engine, is incorporated right at the heart of this amplifier,
developing a richer sound quality.
Through adopting a dual FET into the input section of the sub
amplifier, which detects the distortion of the sound signal,
and adopting a dual transistor in the cascode circuit and cur-
rent mirror circuit, sound quality has been improved through-
out the amplification circuit with straightforward sound quality
that seems to be created with a non-feedback amplifier and
excellent high frequency characteristics thanks to the NFB.
Triple-paralleled push-pull output stages
Triple-paralleled bipolar transistors in push-pull configuration
are used in the final output amplification stage providing a
rated output of 110W+110W (8Ω) or 210W+210W (4Ω).
Highly stable power supply
The unit's highly stable power supply circuitry features a
large capacity EI-core-type power transformer with 8 custom
designed 10,000 μF blocking capacitors.
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 speaker
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
The selector switch IC, as used in our high-end C-900u con-
trol amplifier, supports high quality audio and improves input
separation and crosstalk performance.
Schottky barrier diodes
By using Schottky diodes, manufactured by KYOCERA
Corporation, this unit achieves very high DC conversion
efficiency in the power rectifier circuitry and much less
switching noise.
LUXMAN's original OFC wiring
Our original OFC cable, with non-plated core wire, is used for
internal wiring to achieve smooth signal transmission.
Non-angled circuitry
After carefully considering the delicate nature of the audio sig-
nal flow, non-angled circuit board tracking has been adopted
to achieve smooth signal transmission.