Luxman L-505-U Owners Manual

INTEGRATED AMPLIFIER

L-505u

Owner`s Manual

Contents

Precautions...................................................................................................................3

Names and Functions...................................................................................................4

Connections................................................................................................................10

Operations ..................................................................................................................12

How to use remote control..........................................................................................14

L-505u Block Diagram ................................................................................................15

Specifications..............................................................................................................16

Before asking for repair services ................................................................................17

Precautions

Installation place

This unit shall be installed in a well-

ventilated and effectively heat-

released place.

Especially, installation of this unit

where direct sunlight is present,

where the temperature rises exces-

sively high such as close to a heater,

or where it is humid or dusty may

cause a malfunction even if heat is

efficiently released. Therefore, do not

install this unit in such places.

Ventilation holes

If the amplifier is installed on a rack or

the like, secure ample space for cool-

ing and leave the door open. Do not

pile up other things on the amplifier

and never put articles on it. Failure to

observe this may cause a malfunction.

Note:

For heat dispersal, do not install this

equipment in a confined space such

as a book case or similar unit.

* Note

* *

Wall

Precautions in connecting with other components

When connecting this unit to input

devices such as a CD/DVD player, a

tuner, and a recorder, be sure to turn

off the power of this unit and all other

connected devices. Failure to observe

this may generate a strong noise

resulting in speaker damage or cause

a malfunction.

The pin-plug to be inserted in each

input terminal of this unit shall be

pushed in firmly. If the grounding ter-

minal is inadequately connected, nois-

es including hum may be generated,

resulting in an adverse S/N ratio.

Cautions in connecting speakers

When making speaker system con-

nections, exercise extra care not to

short-circuit between ! and @ of the

speaker terminals and speaker input

terminals of this unit. If a large signal

is applied to the amplifier with its cir-

cuit left short-circuited, a large current

may be passed through the output cir-

cuit and cause a malfunction.

The sound is not generated shortly after the power supply is turned on.

This amplifier is equipped with a time

muting circuit in order to separate the

output circuit. Therefore, no sound is

generated shortly after the power sup-

ply is turned on.

If the volume control is moved to a

high sound level before the time mut-

ing circuit is canceled, a large sound

is suddenly generated. Please be

advised that the volume control shall

be set to a low level at first and adjust-

ed after sound comes out of the

speakers.

Protection circuit

This product is equipped with the pro-

tection circuit that is activated upon

detection of overcurrent, abnormally

high temperature, and DC drift to pro-

tect the amplifier and speakers. When

the protection circuit is activated, the

output to the speaker terminal is shut

off and the standby indicator blinks to

show that this unit is in the muting

state. If the protection circuit is fre-

quently activated after a lapse of a

certain time and turning on the power

again, please consult your dealer.

Batteries

Caution:

Batteries used for remote controller

shall not be exposed to excessive

heat such as sunshine, fire or the like.

Repair and adjustment

When repairs or adjustments are

needed, please ask the dealer where

you bought the unit.

Cleaning

For cleaning, use a piece of soft cloth

to wipe the unit such as cleaning cloth

available on the market. If the unit has

become remarkably dirty, remove the

dirt with soft cloth absorbing a small

amount of neutral detergent, and then

wipe the unit with dry cloth. Do not

use a solvent like benzine or thinner

because such a substance can dam-

age the exterior.

Names and Functions

Front panel

56 78

1. Power switch (stand by/on)

Toggles the power on and off.

When wiring or connection is per-

formed, be sure to turn off this

switch.

2. Operation indicator (OPERATION)

Blinks in the time muting mode

when the power switch is turned on

and lights up when the operation

state is activated afterward. This

indicator blinks when the unit is in

the muting mode or when the vol-

ume is adjusted with the remote

control.

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3. Input selector (INPUT SELECTOR)

Selects an input device from the

devices such as a CD/DVD player

and tuner connected to each input

terminal. The input selector has 8

positions consisting of bal. line, line-

4, line-3, line-2, line-1, rec-1, rec-2,

and phono that correspond to each

input terminal on the rear panel. The

knob is rotated to light the input

indicator of the input device to be

selected.

4. Input indicator

Lights up at the input device to be

selected with the input selector or

remote control.

Names and Functions

5. Phono MC cartridge on/off switch (phono MC)

Changes the gain level of the

equalizer amplifier (amplifier circuit

required to play an analog record).

MC : ON is selected by pressing

this switch when MC (mov-

ing coil) type cartridge of low

output voltage is used.

Be aware that the sound vol-

ume becomes higher and

unbalanced sound without

high frequencies is generat-

ed owing to the impedance

when “MC” is selected dur-

ing use of the MM type car-

tridge.

MM : OFF is selected when MM

(moving magnet) type car-

tridge of high output voltage

is used.

6. Power meters

The left meter reads the output of

the L channel, and the right meter

reads the output of the R channel.

The meters read the level in deci-

bels.

The meters light when the power is

on.

7. Remote sensor (remote sensor)

Receives signals from the accesso-

ry remote control.

8. Standby indicator (stand by)

Lights when the AC plug is plugged

into a wall socket and the power

switch is set to off.

This indicator turns off when the AC

plug is disconnected from the wall

socket or the power switch is set to

on. This indicator blinks when the

protection circuit is activated.

9. Volume control (VOLUME CONTROL)

Adjusts the sound volume. Sound

is not generated when this control

is rotated counterclockwise to the

end, and then, the sound volume

gradually becomes higher when the

control is slowly rotated clockwise.

10. Separate switch (separate)

Separates the pre-amplifier and

main-amplifier each other.

: Uses this unit as a normal

pre-main amplifier.

: Feeds external signals from

the MAIN IN terminal on the

rear panel to the main-ampli-

fier section.

When the separate switch is set to

on, the volume control of this unit

cannot adjust the volume of the

speakers connected to this unit.

Volume adjustment shall be per-

formed at the input device side such

as the control amplifier connected to

the MAIN IN terminal.

Entry of direct output into the MAIN

IN terminal from a CD/DVD player

or other devices that cannot adjust

sound volume constantly provides

a full power state and accordingly

results in the risk of speaker dam-

age.

For such input devices, be sure to

use a control amplifier equipped

with sound volume adjustment

function as a relay, generate sound

through the speakers with volume

lowered, and adjust the volume to

your favorite level.

Names and Functions

Front panel

56 78

11. Subsonic (subsonic)

Cuts ultra-low frequencies out of

audible range to prevent ultra-low

range noise from adversely affecting

audible range. This function is signif-

icantly effective especially when a

record is warped or a woofer is

shaking owing to ultra-low range

vibration.

: Subsonic off

: Subsonic on

12. Line straight (line straight)

Enhances the purity of the sound

quality by bypassing the balance

control circuit, tone control circuit, or

the like.

: Line straight off/bypass off

: Line straight on/bypass on

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13. Balance (BALANCE)

Adjusts the balance of sound vol-

ume between right and left chan-

nels.

Rotating this switch counterclock-

wise causes the left sound volume

to be enhanced, and rotating the

switch clockwise causes the right

sound volume to be enhanced.

This switch shall be set to the cen-

ter position under normal condi-

tions, and rotated to make adjust-

ment if necessary.

When the line straight switch is set

to on, this switch does not function.

When the line straight switch is set

to on, the balance control and tone

control cannot be adjusted and the

mode selector does not function.

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