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The realisation of a desirable ideal the ultimate refinement of separates in a single unit.
An integral part of the design of the L-509X is LUXMAN's original ODNF* amplification feedback circuit, featuring a high-speed primary slew rate, an ultra-wide bandwidth and a low level of distortion that is achieved by feeding back only the distorted components of the audio signal from the output of the amplification circuit. The L-509X is equipped with the latest Version 4.0 ODNF providing a dramatic enhancement of accuracy in distortion detection due to the triple-paralleled first stage error detection circuit. Lower impedance and a higher signal to noise ratio have been achieved due to the paralleled first stage and Darlington equipped second stage amplification circuit. A 3-stage Darlington circuit and a 4-parallel push-pull structure is used for the output stage, similar to the M-700u power amplifier. This achieves output at 120W+120W(8Ω) and 220W+220W(4Ω), enabling the L-509X to drive speakers powerfully with rich dynamics and full expression. *ODNF stands for “Only Distortion Negative Feedback”.
The L-509X features a top panel with a beautiful hair-line finish and widened venting to improve heat dissipation. The loop-less chassis structure restricts any increase in ground impedance. Analog level meters, illuminated with white LEDs, add to the elegant and stylish appearance.
The L-509X is equipped with a high-quality phono amplifier, compatible with MM and MC cartridges. This model offers all the functions that a high quality integrated amplifier should, including bass and treble tone controls, L/R balance adjustment controlled by LECUA, pre/power separation function, volume control and headphone output, all integrated into a single unit without compromising sound quality.
High quality RCA terminals, made of copper alloy, are used for the LINE-1 inputs of the L-509X, combining the beneficial conductivity of copper and durability of brass. The L-509X features many custom-made components befitting a flagship model, such as the robust power supply and high-grade specker terminals that are compatible with Y-connectors.
Thorough vibration countermeasures have been taken, using cast iron feet with a density gradient to eliminate resonance. The high grade, aluminium body remote control is also supplied as standard.
The highly stable power supply circuit developed for the L-509X features a 600 VA EI-core-type power transformer and independent left and right channel large capacity blocking capacitors (10,000μFx4 per channel). This generous custom specification ensures that the power supply unit will not be affected by any load fluctuation.
The L-509X is equipped with a discrete buffer circuit that is equivalent to the type used in the high-end LUXMAN C-900u separate amplifier. The clarity of the audio signal is preserved by this circuit whilst at the same time the following power amplification stage's driving force is significantly increased.
The use of crack-resistant peel coat PCBs for the amplifier boards prevent the quality of audio signals being adversely affected. This product prioritizes audio quality in features such as the non-angled, direct wiring pattern, known as the original LUXMAN’s Beeline construction, ensuring smooth signal transmission via the optimum shortest route.
Large-capacity, low resistance speaker relays are connected in parallel, enabling loss-less transmission of the powerful driving force that is generated by the generous power supply circuit and the amplifier output section of the L-509X. The use of 3.5mm2 cabling for the amplifier board output and the unit's damping factor of 370 enables the L-509X to drive all kinds of speakers accurately.
LUXMAN's New LECUA1000 is at the heart of the preamp section and the volume adjustment control of the L-509X. This computerized attenuator is integrated with the amplification circuit, a feature integral to the high-end LUXMAN C-900u control amplifier. LECUA provides an ideal level control system which allows smooth and fine adjustment of the volume over 88 steps, thereby minimising the deterioration of audio quality at any point of the volume adjustment range. An advancement of the New LECUA1000 is the 3D design layout. The attenuator circuit board is directly connected to the amplification circuit board. Signal routing has been minimized andefficiency has been successfully enhanced. In addition, this design is extremely resistant to external vibration and eliminates changes in audio quality over the volume control range. The robust nature of this system ensures longevity and durability. *LECUA stands for “Luxman Electronically Controlled Ultimate Attenuator”.
|Rated output||120W + 120W (8Ω),|
220W + 220W (4Ω)
|Input sensitivity/input impedance||PHONO (MM): 2.5mV/47kΩ|
PHONO (MC): 0.3mV/100Ω
|Output voltage||REC OUT: 180mV, PRE-OUT: 1V|
|Frequency response||PHONO: 20Hz to 20kHz (±0.5dB)|
LINE: 20Hz to 100kHz (within -3dB)
|Total harmonic distortion||0.007% or less (8Ω, 1kHz)|
0.06% or less (8Ω, 20Hz to 20kHz)
|S/N ratio (IHF-A)||PHONO (MM): 91dB or more|
PHONO (MC): 75dB or more
LINE: 105dB or more
|Volume adjustment||New LECUA1000|
|Amplification circuit||ODNF 4.0|
|Output configuration||Bipolar 4-parallel push-pull|
|Max. amount of tone control||BASS: ±8dB at 100Hz|
TREBLE: ±8dB at 10kHz
|Power supply||230V~(50Hz) /115V~(60Hz)|
150W (under no signal),
0.5W (at standby)
|External dimensions||440(W) x 193(H) x 463(D) mm|
front side knob of 20mm
and rear side terminal of 37mm included in depth
|Net weight||29.3kg (main unit)|
|Accessories||Remote control (RA-17A)|
|Speaker terminal Supported Y-lug terminal dimension||Width of part a: 16mm or less|
Width of part b: 7mm or more
* Connection may not be performed
depending on the shape of the
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