Luxman C-700u User manual

Owner`s Manual
LUXMAN CORPORATION, JAPAN
CONTROL AMPLIFIER
C-700u

Contents
Precautions ············································································································· 1
Features of This Unit································································································ 2
Names and Functions······························································································ 4
Connections ·········································································································· 12
Operations············································································································· 16
How to use Remote Control ·················································································· 18
Block Diagram······································································································· 24
Specifications ········································································································ 27
Before Asking for Repair Services·········································································· 28

CONTROL AMPLIFIER C-700u
1
Precautions
Installation place
Install this unit in a location where good ventilation and heat
radiation is assured.
Especially, installation of this unit where direct sunlight is
present, where the temperature rises excessively 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.
Note:
For heat dispersal, do not install this equipment in a confined
space such as a book case or similar unit.
Precautions in connecting with other
components
When connecting this unit to input/output devices, be sure to
turn off the power switches of this unit and all other connect-
ed units. Failure to observe this may generate a strong noise
resulting in speaker damage or a malfunction.
The pin-plugs to be inserted in the input and output terminals
of this unit shall be pushed in firmly. If the grounding termi-
nal is inadequately connected, noises including hum may be
generated, resulting in an adverse S/N ratio.
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 supply is turned on.
If the volume control is set to a high sound level before the
time muting 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 adjusted after the sound comes
out of the speakers.
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 repair and 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. When the dirt is hard to remove, use a small
amount of neutral detergent to wipe, and then wipe the unit
with dry cloth. Do not use a solvent like benzine or thinner
because such a substance can often damage the exterior.
* Note
Wall
* *
*

2
Features of This Unit
LECUA1000 — LUXMAN Electric
Controlled Ultimate Attenuator 1000
Application of the system to obtain attenuation by combining
2 fixed resistances connected in series has improved the effi-
ciency of the LECUA1000 attenuator used in C-1000f.
The shortest signaling route has been achieved by the ampli-
fier circuit thanks to the 3D structure of the mounting boards.
Controlling LECUA1000 to the level equal to the volume po-
sition detected by a microprocessor has achieved the oper-
ation feeling similar to our conventional sliding-type volume
controls.
ODNF - Only Distortion Negative Feedback -
The amplification feedback circuit that has acquired the high-
speed primary slew rate and ultra-wide bandwidth by feeding
back only distortion components generated during amplifica-
tion for the main amplifier to maintain the pure sound quality
that is almost non-feedback.
With ODNF’s latest version 4.0, in the amplification circuit,
the first stage is 4-parallelized and the second stage is con-
nected with Darlington. Due to these improvements, the low
impedance and high S/N ratio of the transmission circuit have
become possible.
In addition, the input stages of the error detection circuit are
3-parallelized to improve distortion and noise.
High-inertia power supply
High-inertia power supply circuit that combines a large-ca-
pacity OI-core-type power transformer with customizable ca-
pacitor blocks.
Schottky barrier diode
In the power supply rectifier circuit, schottky barrier diode
manufactured by Nihon Inter Electronics Corporation that has
less switching noises and higher conversion efficiency to the
DC voltage is applied.
LUXMAN’s original OFC wires
Our original OFC wires are used in the internal wiring to
achieve smooth signal transmission thanks to the spiral wrap
shielding on each core and the non-plating processing on the
core wire.
Loopless chassis
The independent construction of a loopless chassis structure
eliminates the rise of increased ground impedance caused by
chassis current.
AC inlet
This inlet enables the connection with an external power ca-
ble.

CONTROL AMPLIFIER C-700u
3
Zoom function
When the ZOOM button on the remote control is pressed, the
current volume level is enlarged on the display.
Dimmer function
The brightness of the display window can be switched over
in 4 steps.
Round pattern board
In consideration of the delicate audio signal flow, circuit
boards are round-patterned for the smooth current flow.
Input/output terminals
Introduction of 18 mm pitch RCA input terminals and an XLR
terminal manufactured by Neutrik allows even a high-perfor-
mance line cable with large plug to be connected.
Remote control (RA-22)
The remote control is encased in aluminum. Tactile switches
will satisfy users with “clicking” key touch.
Cast-iron insulator
The gradation cast-iron insulator that clears unnecessary ex-
ternal vibration and strongly supports the weight of this unit
is equipped.
External pre-input terminal
External pre-input terminal is equipped to select an input from
external pre-amplifier or AV amplifier etc.
Selector relay
Selector relay with high sound quality used in Luxman ampli-
fiers enhances the separation and crosstalk performances.

4
Names and Functions
1. Operation switch (OPERATION)
Turns this unit from the standby state to operation state.
When the main power switch on the rear panel is turned on
to set this unit to the standby state and this switch is turned
on, this unit is set to the operation state.
Pressing this switch again at the operating state turns the
unit to the standby state.
2. Operation indicator (OPERATION)
Blinks during warm-up when the operation switch is turned
on and lights up when the operation state is activated af-
terward.
3. Input selector (INPUT SELECTOR)
Selects the unbalanced input terminal or balanced input ter-
minal, both of which are located on the rear panel.
• Input transition by rotating clockwise:
LINE-1→LINE-2→LINE-3→LINE-4→LINE-5→BAL LINE-1
→BAL LINE-2→LINE-1...
• Input transition by rotating counterclockwise:
LINE-1→BAL LINE-2→BAL LINE-1→LINE-5→LINE-4→
LINE-3→LINE-2→LINE-1 …
Factory default: LINE-1
During input selecting operation, input/output muting circuit
is in operation and the unit will be on mute.
4. Display window
Displays the operation status of this unit.
This display window is composed of 8 indicators, input dis-
play, and volume display.
5. Volume control (VOLUME CONTROL)
Adjusts the sound volume.
When this control is rotated counterclockwise to the end,
the unit is on mute. The sound volume gradually becomes
higher when the control is rotated clockwise as follows:
mute→-87 dB→-86 dB→..→0 dB in steps of 1 dB.
67891213 1011
51 2 43
Front panel

CONTROL AMPLIFIER C-700u
5
6. External pre switch (EXT PRE)
Input selector switch to select the external pre-input termi-
nal (EXT PRE) on the rear panel
ON: Outputs sound signals connected to EXT Pre terminal
(pre-amplifier, AV amplifier etc.) directly.
OFF: Plays back a sound source selected by the input se-
lector.
Holding down the switch for approx. 1 second toggles the
external pre switch ON and OFF.
When the external pre switch is set to ON, the external pre
indicator lights up.
When the main power switch is turned off or this unit is
in the standby state, external pre-input signals are always
provided from the unbalanced output terminal regardless of
this switch setting. The input signals connected to the ex-
ternal pre-input terminal are not provided from the balanced
output terminal.
When the external pre switch is set to ON, the volume con-
trol of this unit cannot adjust the sound volume.
Volume adjustment shall be performed at the input device
side such as the pre-amplifier connected to the external
pre-input terminal.
If a device that has no volume adjustment function such as
a CD player is connected to the external pre-input terminal,
the volume control of this unit cannot function, and there-
fore, sudden loud sound may be generated when the exter-
nal pre-input is selected, which may cause hearing loss or
damage to the speakers.
For such input devices, be sure to use a pre-amplifier or the
like equipped with the sound volume adjustment function.
After checking the sound through the speakers with volume
lowered, adjust the volume to your favorite level.
When changing the connected devices, be sure to turn off
the main power switch or set the unit to the standby state.
7. Output mode selection switch
(OUTPUT MODE)
Selects an output mode from the following 3 kinds: unbal-
anced output, balanced output, and both (unbalanced +
balanced) output.
By pressing this switch, the output changes as follows: UN-
BAL→BAL→BOTH→UNBAL ...
• Unbalanced output (UNBAL)
Sound comes out from LINE-1 and LINE-2.
• Balanced output (BAL)
Sound comes out from BAL LINE-1 and BAL LINE-2.
• Both output (BOTH)
The unbalanced outputs, LINE-1 and LINE-2, and the
balanced outputs, BAL LINE-1 and BAL LINE-2, provide
audio output.
Factory default: Unbalanced output (UNBAL) mode
The input/output muting circuit is activated to mute sound
during selecting an output mode.
Every output mode can store preset values, respectively.
Refer to the descriptions about presetting on pages 20 to
21 for presetting.
8. Balance control (BALANCE)
Adjusts the balance of sound volume between right and left
channels.
Rotating this control counterclockwise makes the left sound
volume enhanced, and rotating this control clockwise
makes the right sound volume enhanced.
This control shall be set to the center position under normal
conditions, and rotate to make adjustment if necessary.
The adjustable value for right/left balance is up to -6 dB for
right and left each.
9. Remote sensor (REMOTE)
Receives signals from the remote control.

6
Names and Functions
10. Tone control for treble
TONE CONTROL (TREBLE)
Controls the frequency characteristics in the high-frequency
range.
When this control is set to the center position, flat frequency
characteristic is obtained. Rotating this control clockwise
makes the high-frequency range enhanced, and rotating
this control counterclockwise makes the high-frequency
range attenuated.
This control does not function when the line straight switch
is set to ON.
11. Tone control for bass
TONE CONTROL (BASS)
Controls the frequency characteristics in the low-frequency
range.
When this control is set to the center position, flat frequency
characteristic is obtained. Rotating this control clockwise
makes the low-frequency range enhanced, and rotating this
control counterclockwise makes the low-frequency range
attenuated.
This control does not function when the line straight switch
is set to ON.
12. Line straight switch (LINE STRAIGHT)
This switch is used to increase the purity of the sound qual-
ity by bypassing (skipping) the tone control circuit.
By pressing this switch, line straight setting toggles be-
tween ON and OFF repeatedly.
The line straight indicator lights up when the line straight
switch is set to ON.
When the line straight switch is set to ON, the tone control
and loudness do not function.
13. Monitor switch (MONITOR)
This switch is to activate the monitor input terminal.
ON: Plays back a source from the recorder.
OFF: Plays back a sound source selected by the input se-
lector.
By pressing this switch, the monitor switches from on to off.
Front panel
67891213 1011
51 2 43

CONTROL AMPLIFIER C-700u
7

8
Names and Functions
1. Input indicator (IN:)
Displays the input terminal selected by the input selector or
the remote control.
2. Volume indicator (VOL:)
Indicates the current volume level in steps of 1 dB.
• “- -” shows the mute state. No sound is generated.
• The minimum volume level shown is “–87 dB”, and the
maximum volume level shown is “0 dB”.
3. Loudness indicator (LOUDNESS)
Lights up when the loudness switch on the remote control
is set to ON.
4. Balance indicator (BAL)
Lights up when the balanced output terminal is selected for
the output mode.
5. Standby indicator (STAND BY)
Lights up when the main power switch on the rear panel is
turned on and the operation switch is turned off.
When the operation switch is turned on or when the main
power switch is turned off, this indicator turns off.
6. Unbalance indicator (UNBAL)
Lights up when the unbalanced output terminal is selected
for the output mode.
7. Remote sensor (REMOTE)
Receives signals from the remote control.
Display window
6 75 9
1
3
2
411108

CONTROL AMPLIFIER C-700u
9
8. Rec out indicator (REC)
Lights up when the rec out is activated by the preset func-
tion of the remote control.
9. Balanced phase inversion indicator
(BAL INVERT)
Lights up when the phases of the balanced input and bal-
anced output are inverse against the preset state of this
unit.
10. External pre indicator (EXT PRE)
Lights up when the external pre switch is set to ON.
11. Line straight indicator (LINE STRAIGHT)
Lights up when the line straight switch is set to ON.
When the line straight switch is set to ON, the loudness
function cannot be operated from the accessory remote
control. If the loudness switch is pressed, the line straight
indicator blinks for 3 seconds to show that this operation
cannot be performed.
Perform the loudness function after setting the line straight
switch to OFF.
The loudness function can be toggled ON and OFF only with
the accessory remote control (RA-22).

10
Names and Functions
1. Unbalanced input terminals/INPUTS
(LINE-1, LINE-2, LINE-3, LINE-4, LINE-5)
RCA terminals to input unbalanced audio signals of a line
level
Connect these terminals to an unbalanced output of an in-
put device such as a CD player with a pin-plug cable.
Audio signal inputs are selected by the input selector and
delivered.
LINE-1, LINE-2, LINE-3, LINE-4 and LINE-5 are equivalent
in quality.
2. Record output terminal (REC OUT)
RCA terminal to output audio signals of an input device se-
lected by the input selection switch.
Connect this terminal to a line input of a recorder with a
pin-plug cable.
Output audio signals are not affected by the tone control
function, volume control function, or LR balance function.
This output terminal can be toggled on and off with use of
the preset function of the remote control.
Factory default: Rec out on
3. Monitor input terminal (MONITOR)
RCA terminal to input audio signals of a recorder.
Connect this terminal to a line output of a recorder with a
pin-plug cable.
Audio signal input is selected by the monitor switch and
delivered.
Factory default: Monitor off
4. Unbalanced output terminals/OUTPUTS
(LINE-1, LINE-2)
RCA terminals to output unbalanced audio signals of this
unit.
Connect these terminals to an unbalanced input of an out-
put device such as a power amplifier with a pin-plug cable.
Audio output signals are selected by the output mode se-
lection switch.
LINE-1 and LINE-2 are equivalent in quality.
Factory default output mode: Unbalanced (UNBAL)
1
8 710
2 6
3 4 5
11 9
Rear panel

CONTROL AMPLIFIER C-700u
11
5. External pre-input terminal
(EXT PRE IN)
RCA terminal to input output signals from an external
pre-amplifier or an AV amplifier
This terminal is connected to unbalanced output terminal
directly and outputs the signal connected to ext pre in.
External pre-input signals are not affected by the volume
control of this unit.
6. Remote output terminals
(REMOTE OUT)
If a power amplifier (e.g. M-700u) equipped with a dedicat-
ed remote input terminal is connected to this remote output
terminal with a dedicated remote cable, the power of the
power amplifier provided the signal can be turned on and
off by the operation switch of this unit.
ON signals from the remote output terminals are transmit-
ted in a certain period of time after pressing the operation
switch of this unit. Therefore, the power amplifier provided
the signal is activated after the time elapsed that consists of
the muting time of the power amplifier and this transmission
delay time.
The remote output terminals 1 and 2 can turn on and off 2
units of power amplifiers at the same time.
Refer to the owner’s manual of a signal-receiving power
amplifier for available operation settings of the signal-receiv-
ing power amplifier.
7. AC inlet (AC IN)
Connects the accessory power cable.
The power shall be supplied from a household wall socket.
8. Main power switch (MAIN POWER)
Turns this unit to the standby state.
When this switch is set to ON, the standby indicator on the
front panel lights up and shows that this unit turns to the
standby state.
When this switch is set to OFF, the standby indicator on the
front panel turns off to show that the main power is turned
off.
9. Balanced output terminals/OUTPUTS
(BAL LINE-1, BAL LINE-2)
XLR connector terminal to output balanced audio signals
from this unit
Connect these terminals to a balanced input of an output
device such as a power amplifier with a balanced cable.
Audio output signals are selected with the output mode se-
lection switch.
BAL LINE-1 and BAL LINE-2 are equivalent in quality.
Factory default output mode: Unbalanced (UNBAL)
10. Signal ground (ground terminal)
(SIGNAL GROUND)
Ground terminal for devices to be connected to this unit.
This terminal is used not for safety but for noise reduction
when other devices are connected.
11. Balanced input terminals/INPUTS
(BAL LINE-1, BAL LINE-2)
XLR connector input terminal to receive balanced audio sig-
nals of a line level.
Connect these terminals to a balanced output of an input
device such as a CD player with a balanced cable.
Incoming audio signals are selected with the input selector
and delivered.
BAL LINE-1 and BAL LINE-2 are equivalent in quality.

12
Connections
Normal stereo playback
CD/SACD PLAYER
L R
L R L R
L R L R
POWER AMP 1
POWER AMP 2
L R
L R L R L R
SPEAKER SYSTEM 1
L R
SPEAKER SYSTEM 2
L R
REMOTE REMOTE
CD/SACD PLAYER RECORDER
L R

CONTROL AMPLIFIER C-700u
13
Before Connecting
Before connecting other devices, connect the jack side of the
accessory power cable to the AC inlet of this unit.
Before connection, turn off the main power switch of this
unit and the power of all other connected devices to prevent
unexpected accidents that may be caused by noise.
How to connect power supply
Use the accessory power cable and insert the AC plug in an
outlet on the wall in the room where the unit will be installed.
How to connect the input terminals to
input devices such as a CD player
Connect the output terminals of an input device such as a CD
player to the input terminals of this unit with pin-plug cables
or balanced cables.
In connecting, take great care not to connect the right and
left channels reversely. If these are connected reversely the
localization of sound images is deteriorated and proper play-
back is not acquired.
In case of using pin-plug cables, If the ground side of pin-plug
cable is floating, it may cause generation of noises like hum,
deterioration of S/N ratio. Be sure to insert the plug securely.
How to connect the output terminals to
output devices such as a power amplifier
Connect between the input terminals of an output device
such as a power amplifier and the output terminals of this unit
with pin-plug cables or balanced cables.
In connecting, take great care not to connect the right and
left channels reversely. If these are connected reversely the
localization of sound images is deteriorated and proper play-
back is not acquired.
In case of using pin-plug cables, If the ground side of pin-plug
cable is floating, it may cause generation of noises like hum,
deterioration of S/N ratio. Be sure to insert the plug securely.
How to connect the remote output
terminal to a power amplifier
Connect the remote input terminal of a power amplifier such
as Luxman M-700u to the remote output terminal of this unit
with the dedicated remote cable (no polarity) attached to the
power amplifier.
Through the connection, the power of the power amplifier can
be turned on and off by the operation switch of this unit.
Two (2) remote output terminals are available, and both ter-
minals provide the same signals. Use them according to your
taste.
Use the dedicated remote cable only for the connection be-
tween Luxman control amplifiers and Luxman power amplifi-
ers. Connection to such a terminal that the remote output of
this unit is short-circuited may cause a malfunction.
When this unit is connected to an output device, turn off the
main power switch of this unit or turn this unit to the standby
state to protect the amplifier and speakers from excessive
input, and turn off the power of the input/output devices con-
nected to this unit. After connection, confirm that connec-
tions are appropriately done and turn this unit and the input/
output devices to the operating state.
How to connect a recorder
Connect the input terminals of a recorder to the record output
terminals of this unit with pin-plug cables.
Through the connection, while listening to a sound source
selected by the input selector, it is possible to record the lis-
tening source at the same time. Next, connect the output
terminals of the recorder to the monitor input terminals of this
unit with pin-plug cables. Then, press the monitor switch of
this unit, it is possible to listen the recorded source and check
the recording condition at the same time.
In connecting, take great care not to connect the right and
left channels reversely. If these are connected reversely the
localization of sound images is deteriorated and proper play-
back is not acquired.
If the ground side of pin-plug cable is floating, it may cause
generation of noises like hum, deterioration of S/N ratio. Be
sure to insert the plug securely.

14
Connections
External pre playback
L R
POWER AMP 1 POWER AMP 2
SPEAKER SYSTEM 1
L R
SPEAKER SYSTEM 2
L R
REMOTE REMOTE
AV AMP/PRE AMP
L R L R

CONTROL AMPLIFIER C-700u
15
External pre playback
Connection of external pre-input terminal
to input devices such as an AV amplifier
When this unit is used through the external pre-input, only the
unbalanced output terminal is valid as an output terminal of
this unit. There is no output at the balance output terminal.
When the main power switch is turned off or this unit is in the
standby state, external pre -input signals are always provided
from the unbalanced output terminal regardless of the exter-
nal pre switch setting.
Connect the pre-out terminal of an input device such as an
AV amplifier and a pre-amplifier to the external pre-input ter-
minal of this unit with a pin-plug cable.
In connecting, take great care not to connect the right and
left channels reversely. If these are connected reversely the
localization of sound images is deteriorated and proper play-
back is not acquired.
If the ground side of pin-plug cable is floating, it may cause
generation of noises like hum, deterioration of S/N ratio. Be
sure to insert the plug securely.
When the external pre switch is set to ON, the volume control
of this unit cannot adjust the sound volume.
It is necessary to adjust the volume at the input device’s side
(AV amplifier, pre-amplifier etc.) connected to the ext pre-in-
put terminal.
If a device that has no volume adjustment function such as
a CD player is connected to the external pre-input terminal,
the volume control of this unit cannot function, and there-
fore, sudden loud sound may be generated when the external
pre-input is selected, which may cause hearing loss or dam-
age to the speakers.
For such input devices, be sure to use a pre-amplifier or the
like equipped with the sound volume adjustment function.
After checking the sound through the speakers with volume
lowered, adjust the volume to your favorite level.

16
Operations
Before operation
1. Be sure that the connections are correctly performed.
(Normal playback cannot be achieved with wrong con-
nections of R and L.)
2. When the power is turned on or off or the input selector
is changed over, set the volume control to the minimum
position in advance.
Playback procedure
1. Press the operation switch to turn on the switch after
ensuring that the volume control is set to the minimum
position.
2. Select a playback source by the input selector.
3. Adjust the sound level by the volume control.
4. Operate the line straight switch, balance control, tone
control, and the like according to the playback source.
How to operate line straight switch
The line straight switch is used to play back with the short-
est signaling route for enhancing the purity of the source
selected with the input selector. When this switch is set to
ON, the tone control and loudness are bypassed.
How to operate balance control
The balance control is used to adjust the balance of sound
volume between right and left channels.
When the balance adjustment is not required, the balance
control is set to the center position.
How to operate the tone control
This unit has the tone control function for the low-frequency
and high-frequency ranges.
The low-frequency range type works in the 300 Hz or lower.
The tone control is set to flat frequency characteristic at the
center position. Rotating the control clockwise makes the
low–frequency range enhanced, and rotating the control
counterclockwise makes the low-frequency range attenu-
ated.
The high-frequency range type works in the 3 kHz or higher.
The tone control is set to flat frequency characteristic at the
center position. Rotating the control clockwise makes the
high–frequency range enhanced, and rotating the control
counterclockwise makes the high-frequency range attenu-
ated.
For both the low-frequency and high-frequency ranges, the
right and left channels interlockingly function.
When the line straight switch is set to ON, the tone control
does not function.
How to record a source
1. Select a source to be recorded with the input selector.
2. Activate the rec out by the preset function of the remote
control.
3. Play the source to be recorded and set the recorder to
the recording state.
* Operation of the tone control or balance control does not
affect the recording signals.
* Rec out functions when the power is turned on.

CONTROL AMPLIFIER C-700u
17
Memory
This unit memorizes the following items when the operation
switch is set to OFF or the main power switch is set to OFF:
Item Default
INPUT Selected source
OUTPUT MODE Selected mode
BAL PHASE INPUT-1, 2 : 3±, 2±
OUTPUT : 3±, 2±
BAL INVERT NORMAL / INVERT
DIMMER Normal light/dim/very dim/
light off
ZOOM ON / OFF
LOUDNESS ON / OFF
LINE-STRAIGHT ON / OFF
EXT PRE ON / OFF
MONITOR ON / OFF
REC OUT ON / OFF
Memory reset
The following operations restore all the settings to the factory
defaults.
(1) Turn this unit to the standby state.
(2) Hold down the operation switch on the main unit for 5
seconds or more and press the dimmer switch once while
holding down the operation switch.
That’s all for memory reset.
Factory default
Item Default
INPUT LINE-1
OUTPUT MODE UNBALANCE
BAL PHASE INPUT-1, 2 : 3+, 2−
OUTPUT : 3+, 2−
BAL INVERT NORMAL
DIMMER MAX (under normal conditions)
ZOOM OFF
LOUDNESS OFF
LINE-STRAIGHT OFF
EXT PRE OFF
MONITOR OFF
REC OUT ON
Inhibition and caution
When a setting cannot be changed, an error message as fol-
lows is displayed:
Display Caution
UNBALANCE
MODE!!
When the input and output are
both unbalance, the balanced
phase cannot be inverted.
STRAIGHT
ON!!
When the line straight is set to
ON, loudness cannot be selected.
EXT PRE
MODE!!
When the external pre is set to
ON, mute cannot be selected.
EXT PRE
MODE!!
When the external pre is set to
ON, the output mode cannot be
changed.

18
How to use Remote Control
Remote controller (RA-22)
1
2
3
5
6
8
7
10
9
11
13
4
12
1. Operation switch (OPERATION)
Turns this unit from the standby state to operation state.
When the main power switch on the rear panel is turned on
to set this unit to the standby state and this switch is turned
on, this unit is set to the operation state.
Pressing this switch again at the operating state turns the
unit to the standby state.
2. Input selector
(LINE-1, LINE-2, LINE-3, LINE-4, LINE-5,
BAL-1, BAL-2)
Selects the unbalanced input terminal or balanced input ter-
minal, both of which are located on the rear panel.
During input selecting operation, input/output muting circuit
is in operation and the unit will be on mute.
3. Monitor switch (MONITOR)
This switch is to activate the monitor input terminal.
ON: Plays back a source from the recorder.
OFF: Plays back a sound source selected by the input se-
lector.
By pressing this switch, the monitor switches from on to off.