Luxman L-509x amplifier

Features of the Luxman L-509X

 

New LECUA1000 — LUXMAN Electronically Controlled Attenuator 1000 —

New LECUA1000, which is the integration of an amplifier circuit and a high-precision attenuator by electronically-controlled fixed resistance switcheovers is mounted. Further fine sound volume adjustable without deterioration of sound quality from 0 dB through −87 dB

ODNF — Only Distortion Negative Feedback —

The output section features LUXMAN’s original distortion-only negative feedback system which allows for a high speed primary slew rate and ultra-wide audio bandwidth. Only distortion generated in the amplification process is fed back for cancellation. This maintains pure, high quality sound reproduction 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

4 parallel push-pull output stages

4 parallel push-pull structure of bipolar transistors. Rated output of 120 W+120 W (8Ω), 220 W+220 W (4Ω)

Peel coat, PCB

A peel coat PCB is used for the amplifier board to eliminate the dielectric effect of a resist by using gold plating instead of applying a resist on copper foil with 100μm in thickness.

Highly stable power supply

Highly stable power supply circuit that combines a large-capacity EI-core-type power transformer with customizable 10,000μF × 8 capacitor bloc

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

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 shielding is used for all internal connections to ensure smooth, pure signal transmission. Especially 3.5 mm2 heavy wire is used between the amplifier board and speaker output board.

Non-angled circuitry

After careful consideration of the delicate nature of audio signal flow, non-angled circuit board tracking has been adopted to achieve smooth signal transmission

Phono amplifier

This unit is equipped with a phono amplifier that is compatible with the MM/MC cartridge to achieve analog record reproduction in a high-grade level without adding a dedicated phono amplifier.

Separate function

This unit is equipped with a separate switch to separate the pre-amplifier and power-amplifier each other that enables the bi-amp connection adding a power-amplifier and the coexis tence with an AV system.

Loopless chassis structure

This unit features a loop-less chassis, independently constructed to eliminate increases in ground impedance caused by chassis current.

Copper alloy RCA terminals

A copper alloy terminal that has high conductivity equivalent to copper and hardness equivalent to brass is used for LINE-1 input terminal.

18 mm pitch RCA terminal

18 mm pitch RCA input terminals are used (RCA terminals other than LINE-1) to support high sound quality cables with large connectors

Ventilation

Large-sized ventilation mounted on the top panel to enhance the heat radiation efficiency of this unit. The design follows M-900u/70

Cast-iron insulator

For stability and support, this product features cast iron feet with vibration reducing density gradient.

Hairline finish for the top board

Application of surface treatments such as blasted white for the main unit and sophisticated hairline finish for the top board

Large type speaker terminals

Speaker terminals (A and B systems) of inline layout (with same characteristics for right and left), which is compatible with Y lugs to enable easy connection with extra-thick speaker cables.

Headphone output terminal

This terminal allows you to casually enjoy sound with headphones

Needle-type meter

This unit is equipped with needle-type meters lighted with LED, which improves the visibility in the listening room. High visibility thanks to white illumination.

Aluminum remote control

The high-grade remote control, which is encased in aluminum, can control applicable CD/SACD players as well

 

Specifications

Rated Output Power

120 W+120 W (8 Ω)

220 W+220 W (4 Ω

Total Harmonic Distortion

0.007 % (8 Ω, 1 kHz both channels simultaneous drive, line straight on)

0.06 % (8 Ω, 20 to 20 kHz both channels simultaneous drive, line straight on)

Pre-amplifier Input Sensitivity/Impedance

Phono (MM) : 2,5 mV / 47 k Ω

Phono (MC) : 0,3 mV / 100 Ω

Line : 180 mV / 47 k Ω

Monitor : 180 mV / 47 k Ω

Bal. Line : 180 mV / 55 k Ω

Main-amplifier Input Sensitivity/Impedance

Main In : 1.1 V / 47 k Ω

Output Voltage

REC OUT :  180 mV

PRE OUT :  1 V

Signal-to-Noise Ratio

Phono (MM) : 91 dB or more (IHF-A correction, 5 mV input)

Phono (MC) : 75 dB or more (IHF-A correction, 0.5 mV input)

Line : 105 dB or more (IHF-A weighted, input shorted, line straight on)

Frequency Response

Phono (MM) : 20 Hz to 20,000 Hz (±0.5 dB, line straight on)

Phono (MC) : 20 Hz to 20,000 Hz (±0.5 dB, line straight on)

Line : 20 Hz to 100,000 Hz (within –3 dB, line straight on)

Loudness Control :  +7 dB at 100 Hz : +5 dB at 10 kHz

Damping Factor : 370

Power Supply :  220 - 230 V 〜 (50/60 Hz)

Power Consumption:  380 W; 0.5 W (at standby), 150 W (at no input)

Dimensions (W x H x D):  440 (W) x 193 (H) x 463 (D) mm (front side knob with 20 mm and rear side terminal with 37 mm included in depth)

Weight:  29.3 kg (main unit only)