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INTEGRATED AMPLIFIER L-550AX

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5.  Pre-out terminal (PRE OUT)

This terminal is used to obtain the output of the preampli-
fier section. A bi-amp connection can be performed with 
a combination of an external power amplifier because this 
terminal always provides output regardless of the separate 
switch setting.

Do not insert shortpin plugs into PRE OUT.
No sound is generated.

6.  Main in terminal (MAIN IN)

Provides input to the main-amplifier section when the 
pre-amplifier and main-amplifier are separated by setting 
the separate switch to on.

7.   Balanced input terminal/INPUT  

(BAL LINE)

Are the balanced input terminals of the LINE level for an XLR 
connector.

8.  Phase inverters (PHASE)

Change the phase when the balance input terminal is used. 
The phase shall be corresponding to the phase of the input 
device.
A: NORMAL position 

 GROUND

 

 COLD (–)

 

 HOT (+)

B: INVERT position 

 GROUND

 

 HOT (+)

 

 COLD (–)

9.  AC inlet (AC IN)

Connects the accessory power cable. The power shall be 
supplied from a household wall socket.

10. Speaker terminals (SPEAKERS)

Connects a speaker system.
The right speaker terminal shall be connected to the R side, 
and the left speaker terminal shall be connected to the L 
side in consideration of the polarity.

General type 
terminal

* It is possible to insert cables from below 

as well as from above.

Summary of Contents for L-550AXII

Page 1: ...Owner sManual INTEGRATED AMPLIFIER L 550AXII...

Page 2: ...Contents Precautions 1 Features of This Unit 2 Names and Functions 4 Connections 12 Operations 16 How to use Remote Control 18 Block Diagram 20 Specifications 21 Before Asking for Repair Services 22...

Page 3: ...en and of the speaker terminals and speaker input terminals of this unit If a large signal is applied to the amplifier with its circuit left short circuited a large current may be passed through the o...

Page 4: ...l push pull output stages Parallel push pull structure of bipolar transistors Pure class A rated output 20 W 20 W 8 High inertia power supply High inertia power supply circuit that combines a large ca...

Page 5: ...onsists of the independent construction of a loopless chassis to eliminate increased ground impedance caused by chassis current 18 mm pitch RCA terminal Introduction of 18 mm pitch all RCA input outpu...

Page 6: ...ted with the remote control 3 Input selector INPUT SELECTOR Selects an input device from the devices such as a CD play er an SACD player a D A converter and a tuner connected to each input terminal Th...

Page 7: ...separate indicator off Uses this unit as a normal integrated amplifier on separate indicator on Feeds external signals from the MAIN IN terminal on the rear panel to the main amplifier section This sw...

Page 8: ...ween right and left channels Rotating this control counterclockwise makes the left sound volume enhanced and rotating the switch clockwise makes the right sound volume enhanced This control shall be s...

Page 9: ...he recorder connected to this unit OFF Does not send recording signals to the record er output terminals on the rear panel When not using the recorder set the recording switch to OFF ON Selects an inp...

Page 10: ...ads the output of the R channel The meters read the level in decibels The meters light when the power is on 3 Subsonic indicator SUBSONIC Lights up when the subsonic switch is on 4 Monaural indicator...

Page 11: ...ights up when the loudness switch is on 8 Line straight indicator LINE STRAIGHT Lights up when the line straight switch is on When the line straight switch is set to on the subsonic monaural and loudn...

Page 12: ...sound crack 3 LINE 1 LINE 2 LINE 3 and LINE 4 input terminals unbalanced LINE 1 LINE 2 LINE 3 and LINE 4 Are used for high level signal inputs from a CD player an SACD player a D A converter a tuner a...

Page 13: ...Balanced input terminal INPUT BAL LINE Are the balanced input terminals of the LINE level for an XLR connector 8 Phase inverters PHASE Change the phase when the balance input terminal is used The pha...

Page 14: ...12 Connections RECORDER SPEAKER SYSTEM A L R L R SPEAKER SYSTEM B CD SACD PLAYER ANALOG PLAYER D A CONVERTER...

Page 15: ...his unit with 2 R and L pin plug cables or balanced cables For LINE 2 LINE 3 and LINE 4 input terminals connection in the same fashion as the LINE 1 terminals provides the reproduction likewise How to...

Page 16: ...14 Connections RECORDER SPEAKER SYSTEM A L R L R SPEAKER SYSTEM B CD SACD PLAYER ANALOG PLAYER D A CONVERTER...

Page 17: ...ug cables is required for recording on the recorder After the connection you can enjoy listening to the sound from the speaker system and record the sound at the same time These output signals for rec...

Page 18: ...the balance control is set to the center position When the line straight switch is set to on the balance con trol does not function How to operate the tone control This unit has the tone control func...

Page 19: ...2 Select a source to be reproduced under timer control with the input selector 3 Adjust the volume level with the volume control 4 Perform time setting for start and stop times with your timer 5 Refe...

Page 20: ...ressing this button again to turn off the monaural switch provides regular stereophonic reproduction When the line straight switch is set to on this switch does not function 4 Separate switch SEPARATE...

Page 21: ...ass on This switch toggles the line straight on and off The line straight indicator lights up when the line straight switch is set to on 10 CD SACD player operation switch CD SACD PLAYER This switch i...

Page 22: ...Speaker selector Protector MUTE SUBSONIC MUTE Pre amp RECTIFIER RECTIFIER RECTIFIER RECTIFIER B1 L B1 R B2 L REG REG For EQ TC Pre amp For Protector For Main Amp For Driver B2 R REG RECTIFIER FUSE Fo...

Page 23: ...y 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 Tone control Max amount of chan...

Page 24: ...ol is set to on Set the mute switch to off No sound is generated on one side The balance control is fully rotated The balance control shall be set to the cen ter position under normal conditions The c...

Page 25: ...INTEGRATED AMPLIFIER L 550AX 23 MEMO...

Page 26: ...24 MEMO...

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Page 28: ...LUXMAN CORPORATION JAPAN AG00987E52A Printed in Japan 1 3 1 Shinyokohama Kouhoku ku Yokohama shi Kanagawa 222 0033 Japan...

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