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DESIGNATIONS AND FUNCTIONS OF PANEL CONTROLS
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POWER (Power Switch)
When the power switch is turned ON ( -= ), the MUTE/STAND-
BY LED @ lights.
When the power switch is turned ON, power is supplied to the
unit. It takes a few seconds after the power is turned on for the
unit to warm up. This is due to the built-in muting circuit that
eliminates noise during the on/off operation. -
PHONES (Headphone Jack)
This jack is used to plug in the headphones.
SPEAKERS (Speaker Selection Switch)
The PMA-925R/725R
can be connected to two speaker sys-
tems: speaker system A and speaker system B.
When A is pressed, the speaker system connected to speaker
output terminals A operates,
When B is pressed, the speaker system connected to speaker
output terminais B operates.
When A and B are pressed on together, bath speaker systems
operate simultaneously, When the A and B switches are both off
tin the out position}, there is no output from the speaker termi-
nals. This setting is used to listen to playback through the head-
phones.
LOUDNESS (Loudness Switch)
When the volume is low, itis difficult for the human ear to clearly
distinguish notes in the low and high frequency ranges. The loud-
ness switch allows a simple "one-touch" correction of this diffi-
culty. Press the loudness switch ON ( -«. ) when listening to mu-
sit at a low volume. The low notes and high notes will be
corrected to produce a natural sound.
BALANCE (Balance Control)
This knob is used to adjust the balance between the left and right
channels. When it is set to the center position, the amplitude of
the amplifier is equal on both sides. It there is a difference in the
feft and right channel output voltages for a cartridge, move the
knob to the left and the right to adjustit. If the volume on the right
side is too low, turn the knob to the right ( "¥ ). If the volume on
the left side is too low, turn the knob to the left ( # ). This wilt
achieve an even balance on the left and right sides.
VOLUME (Volume Control)
This knob controls the overall volume level.
Turn the knob to the night ( "¥ } to raise the volume and to the
lett (#7 ) to lower it.
BASS (Bass Control)
This knob is used to control the bass quality of the sound.
\When the knob is set at the center position, the frequency char-
acteristics are flattened in the range below 1000 Hz. The bass
is emphasized as the knob is moved off center to the right ( WwW,
and reduced as it 1s moved to the left (# )
When volume contro! @ is set to the right of the center position,
the effect of the other controls 1s reduced:
TREBLE (Treble Control}
This knob ts used to control the treble quality of the sound
When the knob is set at the center position, the frequency char-
acteristics are flattened in the range above 1000 Hz. The treble
is emphasized as the knob is moved off center to the right ( ¥ },
and reduced as it is moved to the teft (¥ }
When volume control @ is set to the right of the center position,
the effect of the other controis is reduced
SOURCE DIRECT (Source Direct Switch)
The controls (BALANCE, LOUONESS, and TONE) can be used
when this switch is in the OFF (IL ) position.
When set to the ON (=. } position, the above controls are by-
passed and the signals are input directly to the volume control
cifcuit, providing high quality sound.
REC OUT SELECTOR (Rec Out Select Switch)
Use this switch to select the recording component.
@
PHONO:
Used to recording from the turntable.
e
CD:
Used to recording from the CD player.
@
TUNER:
Used to recording from the tuner
@
AUX:
Used to recording component that con-
nected to the AUX terminal.
®
DAT/TAPE-1
p> 2: Used to recording from the tape deck
connected to the OAT/TAPE-—1 jacks
@
DAT/TAPE-2
} 1: Used to recording from the tape deck
connected to the DAT/TAPE-2 jacks.
REMOTE SENSOR (Remote Control Sensor)
This sensor receives the infra-red light transmitted from the
wireless remote control unit.
For remote control, point the wireless remote control unit to-
wards the sensor.
MUTE / STANDBY LED
This LEO flashes while the muting circuit is activated when the
power is turned on and when muting is turned on from the re-
mote control unit, and remains sit (without flashing) whiie the
power is on.
INPUT SELECTOR (Input Select Switch)
Use these to select the program source.
When the button for the desired program source is selected, its
LED lights. One program source only can be selected at a time,
as follows:
@
PHONO:
Used to select the output from a turstable
that is connected to the PHONO terminal.
Use the PHONO switch @ (Rear Panel Side)
to switch the sensitivity to corraspond to the
cartridge type being used.
e co:
Used to listen a compact disc player or other
component that is connected to the CD ter-
minal.
@
TUNER:
Used
to play a component
such
as an
FM/AM tuner or a TV tuner that is connected
to the TUNER terminal
@
AUX:
Used to play a component such as a Hi F: vid-
0 piayer, TV tuner, 8-track tape player or
tape deck that is connected to the AUX termi.
nal.
@
DAT/TAPE-1:
Use this Position when using the tape deck,
etc., connected to the DAT/TAPE-1 jacks.
@
DAT/TAPE-2:
Use this Position when using the tape aeck,
etc., connected to the DAT/TAPE-2 jacks.
®
PHONO
(Cartridge Selection Switch): Rear Panel
Side
This switch is set according to the type of player cartridge to be
used,
@
MC (-® |; Used when an MC {moving-coil) cartridge with
an output of jess than 0.5 mV is used
@
=MM {= ): Used when an MM (moving-magnet) cartridge
with an output of 2 mV or more is used.
®
AC OUTLETS: Rear Panel! Side
@
For U.S.A., Canada, and Taiwan R.O.C. madels.
AC outlets ara used for connecting amplifier component
units, such as tuner, turntable, tape deck, etc.
e@ SWITCHED (Total capacity: 120 WI:
These outlets are turned ON/OFF
when main power
switch and POWER button on the Remote Control Unit
is turned on/off
@
UNSWITCHED (Capacity: 240 W)
This outlet is always ON whether power switch is on or
OFF
e@
For Europe (except the U.K.), Asia and Hong Kong mod-
els.
AC outlets are used for connecting amplifier component
units, Such as tuner, turntable, tape deck, ete.
@
SWITCHED {Total capacity: 100 W):
These outlets are turned ON/OFF when main power
switch and POWER button on the Remote Control Unit
is turned on/off.
®@ UNSWITCHED (Capacity: 100 WI
This outlet is always ON whether power switch is on or
OFF
OPERATION
PREPARATION
1. CHECKING CONNECTIONS
®
Make sure that all the connections are proper by referring to the
back panel. (Fig. 2, 3)
@
Check the polarity (positive and negative) of connections, and
the directivity of stereo separation (right cord to right channel ter-
minat, and left cord to left channel terminal).
@
Check the directivity of pin cord connection.
2. SETTING OF EACH KNOB
@
Turn the volume control knob counterclockwise, to "0"
@
Set the rotary knob to "flat".
@
Set SOURCE DIRECT and LOUDNESS to "OFF { -@.}".
Atter checking the above items, turn on the power, the amplifie: is set
in the ready mode in a few seconds.
PLAYING A RECORD
1. Set the INPUT SELECTOR switch to "PHONO".
2. Operate the turntable and play the record.
3.
Turn the volume and tone controls to yield an appropriate volume
and sound quality.
PLAYBACK OF CD PLAYER
1. Set the (NPUT SELECTOR switch to "CD".
2. Operate the CD player.
3. Turn the volume and tone controls to yield an appropriate volume
and sound quality.
RECEPTION OF RADIO PROGRAMS
1. Set the INPUT SELECTOR switch to "TUNER".
2. Operate the tuner to receive a radio program.
3. Turn the volume and tone controls to yield an appropriate volume
and sound quality.
CONNECTIONS OF AUDIO EQUIPMENT TO AUX TERMINALS
1, Set the INPUT SELECTOR switch to "AUX" Position,
2. Operate the Audio equipment Systems.
3. Turn the volume and tone controls to yield an appropriate volume
and sound quahty.
PLAYBACK WITH TAPE DECK
1. Set
the
INPUT
SELECTOR
switch
to
"DAT/TAPE-1"
or
"DAT/TAPE-2",
2. Operate the Tape Deck.
3. Turn the volume and tone controis to yield an appropriate volume.
and sound quality.
RECORDING WITH TAPE DECK
1. Setthe REC OUT SELECTOR to the program source you wish to re-
cord.
2. Start the playback of the program source.
3. Start recording with the component connected to "DAT/TAPE-1"
or
"DAT/TAPE-2".
@
in the PMA-925R/725R, the REC OUT signal and the speaker
(headphone) signal are output via separate circuits so that knobs and
switches retated to the tone and volume have no effect whatsoever
on the sound that is recorded. Also, since the recording function is
selected by the REC OUT SELECTOR, the free program source can
be played through the speakers (or headphones) even during re-
cording.
® MONITORING THE RECORDING
A recording in progress can be monitored if a tape deck with three
individual heads for recording and playback is used. A tape deck in
which a common head is used for both recording and playback can-
not be used to monitor recording. When a recording is being made
using DAT/TAPE-1, selecting DAT/TAPE-1 with the INPUT SELEC-
TOR will engage tha RECORDING MONITOR and pemit a check of
the recording condition,
CAUTION
Protective Circuit
This satis equipped with a high speed protective circuit. This cir-
cuit protects the internal circuitry from damage due to large cur-
rents flowing when the speaker jacks are not completely con-
nected or when an output is generated by a short circuit. This
protective circuit's operation cuts off the output to the speak-
ers. In such a case, be sure to turn the power to the set off and
check the connections to the speakers. Then turn the power on
again. After muting for several seconds, the set will operate nor-
mally.
NOTE
@
This amplifier has a full memory back-up system. When the power
is turned on, INPUT SELECTOR @ are set to the last mode set be-
fore the power was turned off
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