Aiwa AV-D25 User manual

For assistance and information
call toll free I-800-BUY-AIIMA
(United States and Puerto Rico)
88-AR4-903-01
980520ACK-Y-9 R!B

“CAUTION:TO REDUCE THE RISK OF
ELECTRIC SHOCK,
DO NOT REMOVE COVER (OR BACK).
NO USER-SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED
SERVICE PERSONNEL.”
Owner’s record
For your convenience, record the model number and serial
number (you will find them on the rear of your unit) in the space
provided below. Please refer to them when you contact your
Aiwa dealer in case of difficulty.
Model No. Serial No. (Lot No.)
AV-D25
IENGLISH
PRECAUTIONS
Read the Operating Instructions carefully and completely before
operating the unit. Be sure to keep the Operating Instructions
for future reference. All warnings and cautions in the Operating
Instructions and on the unit should be strictly followed, as well
as the safety suggestions below.
Installation
1
2
3
4
5
6
7
Water and moisture —Do not use this unit near water, such
as near abathtub, washbowl, swimming pool, or the like.
Heat —Do not use this unit near heat sources, including
heating vents, stoves, or other appliances that generate heat.
It also should not be placed in temperatures less than 5°C
(41”F) or higher than 35°C (95”F).
Mounting surface —Place the unit on a flat, even surface.
Ventilation —The unit should be situated with adequate
space around it so that proper heat ventilation is assured.
Allow 10 cm (4 in.) clearance from the rear and the top of the
unit, and 5 cm (2 in.) from each side.
-Do not place the unit on a bed, rug, or similar surface that
may block the ventilation openings.
-Do not install the unit in abookcase, cabinet, or airtight
rack where ventilation may be impeded.
Objects and liquid entry —Take care that objects or liquids
do not get inside the unit through the ventilation openings.
Carts and stands —When placed or
mounted on a stand or cart, the unit
should be moved with care.
Quick stops, excessive force, and
uneven surfaces may cause the unit or m3
A~-
cart to overturn or fall.
Wall or ceiling mounting —The unit should not be mounted
on a wall or ceiling, unless specified in the Operating
Instructions.
Electric Power
1
2
3
4
5
Power sources —Connect this unit only to power sources
specified in the Operating Instructions, and as marked on
the unit.
Polarization —As asafety feature, some units are equipped
with polarized AC power plugs which can only be inserted
one way into apower outlet. If it is difficult or impossible to
insert the AC power plug into an outlet, turn the plug over
and try again. If it is not still inserted easily into the outlet,
please call aqualified service technician to service or replace
the outlet. To avoid defeating the safety feature of the
polarized plug, do not force it into apower outlet.
AC power cord
-When disconnecting the AC power cord, pull it out by the
AC power plug. Do not pull the cord itself.
-Never handle the AC power plug with wet hands, as this
could result in fire or shock.
-Power cords should be firmly secured to avoid being
severely bent, pinched, or walked upon. Pay particular
attention to the cord from the unit to the power socket.
-Avoid overloading AC power plugs and extension cords
beyond their capacity, as this could result in fire or shock.
Extension cord —To help prevent electric shock, do not
use apolarized AC power plug with an extension cord,
receptacle, or other outlet unless the polarized plug can be
completely inserted to prevent exposure of the blades of the
plug.
When not in use —Unplug the AC power cord from the AC
power outlet if the unit will not be used for several months or
more. When the cord is plugged in, asmall amount of current
continues to flow to the unit, even when the power is turned
off.

Outdoor Antenna
1Power lines —When connecting an outdoor antenna, make
sure it is located away from power lines.
2Outdoor antenna grounding —Be sure the antenna system
is properly grounded to provide protection against unexpected
voltage surges or static electricity build-up. Article 810 of the
National Electrical Code, ANS1/NFPA70, provides information
on proper grounding of the mast, supporting structure, and
the lead-in wire to the antenna discharge unit, as well as the
size of the grounding unit, connection to grounding terminals,
and requirements for grounding terminals themselves.
Antenna Grounding According to the National Electrical Code
)
(NEC ART 250 PART H)
NEC-NATIONAL ELECTRICAL CODE
Maintenance
Clean the unit only as recommended in the Operating
Instructions.
Damaue Reauirinq Service
Have the unit serviced by aqualified service technician if:
-The AC power cord or plug has been damaged
-Foreign objects or liquid have gotten inside the unit
-The unit has been exposed to rain or water
-The unit does not seem to operate normally
-The unit exhibits amarked change in performance
-The unit has been dropped, or the cabinet has been damaged
DO NOT ATTEMPT TO SERVICE THE UNIT YOURSELF.
Check your unit and accessories
AV-D25 Stereo receiver Remote control
FM antenna AM antenna
Operating Instructions, etc.
TABLE OF CONTENTS
PRECAUTIONS ...................................................................1
PREPARATIONS
CONNECTIONS ..................................................................3
BEFORE OPERATION ........................................................6
SOUND
CUSTOM AUDIO ADJUSTMENT .......................................7
ELECTRONIC GRAPHIC EQUALIZER ..............................8
DSP SURROUND ................................................................8
EIASIC OPERATIONS
SELECTION OF AUDIO/VIDEO SOURCE .........................9
RECORDING AN AUDIO SOURCE .................................10
RAD1O RECEPTION
MANUALTUNING .............................................................11
DIRECTTUNING ...............................................................11
PRESETTING STATIONS .......................m.........................12
DOLBY SURROUND
SELECTING DOLBY PRO LOGIC ...................................13
ADJUSTING SPEAKER LEVEL BALANCE ....................14
TIMER
SETTING THE CLOCK ......................................................15
SETTING THE SLEEP TIMER ..........................................15 ❑
GENERAL
CARE AND MAINTENANCE ............................................16
SPECIFICATIONS .............................................................16
TROUBLESHOOTING GUIDE ..........................................17
PARTS INDEX ...................................................................18
ENGLISH 2

CONNECTIONS CONNECTING EQUIPMENT
Jacks and plugs of the connecting cord are color-coded as
follows:
Before connecting the AC cord Red jacks and plugs :For the right channel of audio signals
The rated voltage of your unit shown on the rear panel is 120 VWhite jacks and plugs: For the left channel of audio signals
AC. Check that the rated voltage matches your local voltage. Yellow jacks and plugs: For video signals
IMPORTANT
Connect the speakers, antennas, and all other external Insert the plugs fully into the jacks. Loose connections may
equipment first. Then connect the AC cord at the end. produce ahumming sound or other noise interference.
*I Be sure to connect the VIDEO OUT terminal of aDVD player
directly to aTV set, not through this unit.Otherwise, the picture
noise may appear when playing the DVDScopy protected.
*2Input sound through the 5.1 INPUT terminals cannot be
recorded. When recording the sound from the DVD player,
connect the AUDIO OUT (DOWN MIXING) terminals of the
DVD player to the VIDEO l/DVD/MD AUDIO IN terminals of
the unit.
*3When connecting amonaural video, use asterao-mono
connecting cord (not supplied).
DVD or Video l/MD player*a
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Turntable
ITape deck
3ENGLISH

~and@ in the illustration correspond to the following details.
I
.■—@Center speaker
CONNECTING SPEAKERS @) Front speakers
Speaker terminals
Connect front speakers (system Aand/or B), acenter speaker,
surround speakers andsubwoofer tothecorresponding speaker
terminalson the unit:
-the front speaker cords to the FRONT SPEAKERS terminals
-the center speaker cord to the CENTER SPEAKER terminals
-the surround speaker cords to the SURROUND SPEAKERS
terminals.
-for more powerful bass, the sub woofer (with abuilt-in amplifier)
cord to the SUPER WOOFER 4jack
Speaker impedance
For all speakers, use speakers of 8ohms or more.
Connecting +to +, –to -terminals
To get the proper sound effect, the speaker terminals on the unit
and the speaker should be connected with proper polarity; the+
terminal on the unit should be connected to the +terminal on
the speaker (and -to –).
m
●Be sure to connect the speaker cords correctly as shown in
the illustration on the right column. Improper connections can
cause shorl circuits in the SPEAKER(S) terminals.
●Do not leave objects generating magnetism near the speakers.
r
Lift up the terminal flap,
insert the speaker cord lead
into the terminal slot, then
close the flap. Check that the
cord is connected securely.
Surround speakers
—-4
LJ\J
Sub woofer Center speaker
ENGLISH 4

POSITIONING THE SPEAKERS
Position the speakers to make the most of the Dolby Digital
Surround (5.1CH), Dolby Pro Logic or DSP effect.
@Front speakers
@Center speaker
Position in the center of the two front speakers. In addition,
position on or below the TV set, if connecting aTV set to the
unit.
@Surround speakers
Place the surround speakers directly to the side of or slightly
behind the listening area. Align them horizontally, about 1
meter (3.2 feet) above ear height.
@Sub woofer
Place the sub woofer in any place between the two front
speakers.
Sound from the surround speakers or center speaker depends
on the setting of the DSP, Dolby Pro Logic and 5.1 CH function.
CONNECTING THE SUPPLIED ANTENNAS @
Connect the FM antenna to the FM 75 Qterminals and the AM
antenna to the AM LOOP terminals.
FM antenna
,>Y
To stand the AM loop antenna on asurface
Fix the claw to the slot as shown in the illustration.
To position the antennas
FM feeder antenna:
Extend this antenna horizontally in aTshape and fix its ends to
the wall.
AM loop antenna:
Position for the best reception.
m
●Do not bring the FM antenna near metal objects or curtain rails.
●Do not bring the AM antenna near other external equipment,
the unit itself, the AC power cord or speaker cords, as noise
will be picked up.
●Do not unwind the AM loop antenna wire.
CONNECTING AN OUTDOOR ANTENNA
For better FM reception, use of an outdoor antenna is
recommended. Connect the outdoor antenna to the FM 75 Q
terminals.
5ENGLISH

ABOUTTHEREMOTE CONTROL BEFORE OPERATION
Inserting batteries
Detach the battery cover on the rear of the remote control and
insert two R6 (size AA) batteries.
R6<AA)
When to replace the batteries
The maximum operational distance between the remote control
and the sensor on the unit should be approximately 5meters
(16 feet). When this distance decreases, replace the batteries
with new ones.
Using the remote control
The instructions in this manual refer mainly to the buttons on the
main unit. Buttons on the remote control with the same names
as those on the main unit can be used as well.
m
●If the unit is not going to be used for an extended period of
time, remove the batteries to prevent possible electrolyte
leakage.
●The remote control may not operate correctly when:
-The line of sight between the remote control and the remote
sensor in the display window is exposed to intense light, such
as direct sunlight.
-Other remote controls are used nearby (those of television,
etc.)
POWER TAPE MONITOR VOLUME
II Function indicators I
PHONES FRONT SPEAKERS A, BFunction
buttons
To turn the unit on
Press one of the function buttons (TUNER, PHONO,
AUX, CD, VIDEO 1/5.1 CH, VIDEO 2or
VIDEO 3) or theTAPE MONITOR button.
When pressing the TUNER button, the previously tuned
station is received (Direct Play Function).
The POWER button is also available.
Operation is possible after four seconds, while the VOL
(volume) level or function name is displayed one after the
other and the selected function indicator flashes.
To select the front speaker system
To use speaker system A: Set the FRONT SPEAKERS Abutton
to sON.
To use speaker system B: Set the FRONT SPEAKERS Bbutton
to sON.
To use both speaker systems: Set both the buttons to sON.
Set the button(s) to .EOFF to turn off the speaker system(s).
m
As the front speaker systems Aand Bare connected in series:
-The sound will be slightly decreased when using both speaker
systems
-No sound can be heard if the FRONT SPEAKERS Aand B
buttons are set to ~ON when only one speaker system is
connected
Using the headphones
Connect headphones to the PHONES jack with astandard stereo
plug (06.3 mm, 1/4 inch). Be sure to set the FRONT SPEAKERS
Aand Bbuttons to 10FF. Otherwise sound is output from the
speakers.
The 5.1 CH function, Dolby Pro Logic or DSP system is
automatically canceled when the headphones are plugged in.
To turn the unit off, press the POWER button.
ENGLISH 6

CUSTOM AUDIO ADJUSTMENT SUPER T-BASS SYSTEM
K‘1
—
VOLUME CONTROL
Turn the VOLUME control on
buttons on the remote control.
1— I
MUTING BALANCE
the unit, or press the VOLUME
The volume level is shown on the display for four seconds. It
can be adjusted between Oand MAX (31). It flashes when being
set over the level 21.
The volume level remains memorized even after the power is
turned off. However, if the power is turned off when the volume
is set to more than 17, it is automatically set to 16 the next time
the power is turned on.
To adjust the Ieft/right balance of the front speakers
Press the BALANCE button to display ‘l_/R OdB. Then press
the DOWNY or UPA button repeatedly within four seconds.
Note that the front speakers balance of the 5.1 CH and Dolby
Pro Logic modes is also changed.
To mute the sound temporarily
Press the MUTING button (-20 dB).
“MUTE ON” appears on the display for four seconds. While
muting the sound, the selected function indicator flashes. Press
the MUTING button again to restore the sound.
The T-BASS system enhances the realism of low-frequency
sound.
Press the T-BASS button.
Each time it is pressed, the level changes. Select one of the
three levels, or the off position to suit your preference.
I
. . .... ......
.... ......
:: .... ......
&+&&+E+- (cancel)
Low-frequency sound may be distorted when the T-BASS system
is used for adisc or tape in which low-frequency sound is
originally emphasized. In this case, cancel the T-BASS system.
SOUND ADJUSTMENT DURING
RECORDING
The output volume and tone of the speakers or headphones
may be freely varied without affecting the level of the recording.
7ENGLISH

ELECTRONIC GRAPHIC
EQUALIZER
GEQ
GiQ
This unit provides the following five different equalization modes.
ROCK: Powerful sound emphasizing treble and bass
POP: More presence in the vocals and midrange
JAZZ: Accented lower frequencies for jazz-type music
CLASSIC: Enriched sound with heavy bass and fine treble
BGM: Calm tone with suppressed bass and treble
Press one of the GEQ (Graphic Equalizer) buttons.
The selected mode name appears on the display for four
seconds, and the selected mode on the display is enclosed with
parentheses.
Selected mode
To cancel the selected mode
Press the selected button again. “GEQ OFF appears on the
display.
To select with the remote control
Press the GEQ button repeatedly until the desired equalization
mode is displayed.
DSP SURROUND
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MANUAL
SELECT
UP>,
DOWN<
DSP DOWNY
The DSP (Digital Signal Processor) surround circuits can recreate
the effect of sounds reflected from walls or ceilings, to obtain
the sound presence of real environments. There are four modes
with matching graphic equalization modes. Equalization modes
are selected automatically and can also be selected or turned
off to suit your preference.
Press one of the DSP buttons (DANCE, LIVE, HALL or
ARENA).
The selected mode name appears on the display for four
seconds, and the selected DSP and matching GEt2 modes on
the display are enclosed with parentheses.
Selected DSP mode
Matching GEQ mode
When the music source is monaural
Select LIVE to obtain asimulated stereo effect. When DANCE,
HALL or ARENA is selected, no sound will be heard from the
surround speakers.
To cancel the selected mode
Press the selected button again. “DSP OFF appears on the
display. Even if canceling the selected DSP mode, the matching
or selected GEQ mode still remains. To cancel both the selected
DSP mode and the matching (or selected) GEQ mode at the
same time, press the DSP/GEQ OFF button.
To select with the remote control
Press the DSP button repeatedly until the desired DSP mode is
displayed.
To adjust the volume and balance of the surround
speakers
Press the MANUAL SELECT button twice or three times, while
the DSP system is turned on, to display “S-R OdB (for right
surround speaker) or “S-L OdB (for left surround speaker). Then
press the DOWNVor UPA button repeatedly within four
seconds.
Note that the surround speakers volume and balance of the 5.1
CH and Dolby Pro Logic modes are also changed.
●The DSP system is automatically canceled:
-when the Dolby Pro Logic is turned on
-when the 5.1 CH function is selected
●The DSP system cannot be turned on:
-while the 5.1 CH function is selected
-while headphones are plugged in
ENGLISH 8

SELECTION OF AUDIO/VIDEO
SOURCE
1
1Select the program source.
Press one of the function buttons or the TAPE MONITOR
button.
To change adisplayed name for the VIDEO 1/5.1 CH
button and VIDEO 2button
When the VIDEO 1/5.1 CH button is pressed, VIDEO 1is
displayed initially. It can be changed to DVD or MD.
With the power on, press the POWER button while pressing the
VIDEO 1/5.1 CH button.
This VIDEO 1/5.1 CH button also works as the 5.1 CH (5.1
INPUT) function switch. While the selected function name
(VIDEO 1, DVD or MD) for the VIDEO 1/5.1 CH button is
displayed, press the button again. The function name will change
to “5.1 CH” and the source connected to the 5.1 INPUT terminals
is selected.
To resume, press the button again so that the selected function
name is displayed.
The displayed name for VIDEO 2button can be changed to
VIDEO 2, LD orTV with the power on, press the POWER button
while pressing the VIDEO 2button.
To adjust the sound level of the connected source
The input sensitivity level of each function (except the TUNER
and 5.1 CH functions) can be adjusted.
When the sound level of the connected source is higher or lower
than that of the TUNER, adjust it as follows.
1Select the function to be adjusted.
Press the function button accordingly and play the source.
Television, etc. IAUX
Com~act disc ICD 2Press the UPA or DOWNV button repeatedly.
Video VIDEO 1/5.1 CH, VIDEO 2,
VIDEO 3I
LD or Cable TV VIDEO 2
MD or DVD VIDEO 1/5.1 CH
The function buttons to be pressed (except PHONO) depend
on the equipment connected to the input terminals on the
rear panel of the unit.
When using aturntable with abuilt-in equalizer amplifier, set the
switch of the equalizer amplifier to off. See the instructions of
the turntable for further information.
2Start the selected program source.
3Adjust the sound.
About the video source to the monitor or TV
Selected VIDEO source
Vl: VIDEO 1, V2: VIDEO 2, V3: VIDEO 3
The level can be adjusted between -6dB (MIN) and +f3dB (MAX)
in 2dB steps. Adjust the level so that the sound is output at the
same level as the TUNER.
●The input sensitivity level of the TUNER or 5.1 CH function
cannot be adjusted.
●That of the TAPE MONITOR cannot be adjusted either.
Even if the TAPE MONITOR is selected and the TAPE
MONITOR indicator turns red, pressing the UPA or DOWNV
button will change the level of the function displayed on the
window.
The selected video source is indicated on the display and the
video signal through the MONITOR VIDEO OUT jack is output
on the TV.
9ENGLISH

TO PLAY ADVD RECORDED IN DOLBY
DIGITAL SURROUND
This receiver has the 5.1 INPUT connectors supporting Dolby
Digital decoder with the 5.1 ch output terminals. When aDVD
player that contains aDolby Digital decoder is connected to the
receiver, you can enjoy theater-quality audio right in your home
when playing discs recorded in Dolby Digital Surround.
1Press the VIDEO 1/5.1 CH button to select the
VIDEO 1(DVD or MD) function.
2Press the VIDEO 1/5.1 CH button again.
“5.1 CH” appears on the display and the DVD player
connected to the 5.1 INPUT terminals is selected as asource.
3Start playing the DVD recorded in Dolby Digital
Surround.
To resume the VIDEO 1, DVD (2 ch stereo) or MD function, press
the VIDEO 1/5.1 CH button again.
m
●The 5.1 CH function is automatically canceled and the VIDEO
1, DVD or MD function is selected:
-when the Dolby Pro Logic is turned on
-when headphones are plugged in
●The 5.1 CH function cannot be selected while headphones are
plugged in.
RECORDING AN AUDIO SOURCE
1
2
3
TAPE MONITOR 1
Select the program source to be recorded.
Press one of the function buttons.
Set the tape deck or MD recorder to the recording
mode.
Start the selected program source.
To monitor recorded sound during recording (when the
connected tape deck is athree-head system)
Press the TAPE MONITOR button. “TAPE ON” appears on the
display for four seconds, and then the source name selected in
step 1comes back on. To cancel the tape monitor, press it again
so that “TAPE OFF appears.
m
●Any sound control system has no effect on recording (see page
7). ❑
●Input sound through the 5.1 INPUT terminals cannot be
recorded. When recording the sound from the DVD player,
connect the AUDIO OUT (DOWN MIXING) terminals of the DVD
player to the VIDEO l/DVD/MD AUDIO IN terminals of the unit.
●When recording sources by the MD recorder connected to the
VIDEO l/DVD/MD AUDIO OUT terminals, select the source
after pressing the VIDEO 2or VIDEO 3button (V2 or V3 should
be displayed).
Recording cannot be done while the VI indication is displayed
on the window.
●Input sound from the tape deck connected to the TAPE
MONITOR IN terminals cannot be recorded.
ENGLISH 10

MANUAL TUNING DIRECT TUNING
1
2
TUNER
12
Press the TUNER button repeatedly to select the
desired band. ~FM--+AM~
The display changes to frequency indications after indicating
band and video source (V1, V2 or V3) for two seconds.
When the TUNER button is pressed while the power is off,
the power is turned on directly.
Press the UPA or DOWNY button to select a
station.
Each time the button is pressed, the frequency changes,
When astation is received, “TUNE” is displayed for two
seconds. During FM stereo reception, (I(O)]) is displayed.
To search for astation quickly (Auto Search)
Keep the UPA or DOWNY button pressed until the tuner starts
searching for astation. After tuning in to astation, the search
stops.
To stop the Auto Search manually, press the UPA or DOWNV
button.
●The Auto Search may not stop at stations with very weak
signals.
When an FM stereo broadcast contains noise
Press the MONO TUNER button on the remote control so that
“MONO appears on the display.
Noise is reduced, although reception is monaural.
To restore stereo reception, press the button so that “MONO
disappears.
DOWN7, UPA
Numbered
buttons
When you know the frequency of the desired station, you can
tune in directly to the station.
1
2
3
Press the TUNER button to select aband.
Press the TUNER button and hold it down until
(’ “flashes on the display (Direct Tuning Mode).
.....
Press the appropriate numbered buttons to tune
in to the desired station.
Example:
To tune in to 106.50 MHz, press 1, 0, 6, 5 and Obuttons.
To tune in to 95.20 MHz, press 9, 5, 2 and Qbuttons,
To cancel the Direct tuning mode
Press the UPA or DOWNT button.
When using the remote control
Carry out steps 1 and 2 above, and press the numbered buttons
on the remote control to tune in to the desired station.
m
●When entering afrequency out of tuning range, the value
flashes for two seconds and then goes off. Check the frequency
and repeat step 3correctly.
●When entering afrequency not covered by the tuning interval,
the value is automatically rounded up or down to the closest
one covered by it.
To change the AM tuning interval
The default setting of the AM tuning interval is 10 kHz/step. If
you use this unit in an area where the frequency allocation
system is 9kHz/step, change the tuning interval.
Hold down the TUNER button and press the POWER button
immediately. Note that the unit is set to the Direct Tuning mode
if the TUNER button is pressed and held down for about half
asecond.
To reset the interval, repeat this procedure.
I1ENGLISH

PRESETTING STATIONS PRESET NUMBERTUNING
Numbered
buttons
TUNER
BAND
The unit can store atotal of 32 preset stations. When astation is
stored, apreset number is assigned to the station. Use the preset
number to tune in to apreset station directly.
1
2
3
Press the TUNER button to select the band, and
press the UPA or DOWNY button to select a
station. Direct tuning is also available.
Press the SET button to store the station.
Apreset number assigned to the station, beginning from 1in
consecutive order for each band, flashes in the display for
two seconds.
Repeat steps 1and 2.
No ‘more stations will be stored if atotal of 32 stations have
already been stored for all the bands.
m
1Press the TUNER button to select aband.
2Press the numbered buttons to select apreset
number.
Example:
To select preset number 25, press 2 and 5.
To select preset number 7, press Oand 7.
To clear apreset station
Select the preset number of the station to be cleared .Then, press
the SET button, and press the SET button again within four
seconds.
The preset numbers of all other stations in the band with higher
numbers are decreased by one.
When using the remote control
Press the TUNER BAND button to select aband, then press the
numbered buttons to select apreset number.
When the AM tuning interval is changed, all preset stations are
cleared. The preset stations have to be set again.
ENGLISH 12

This unit is equipped with the Dolby Pro Logic decoder and also
supports the Dolby Digital decoder with the 5.1 ch output
terminals.
The unit and the center and surround speakers (standard) assure
full-scale home theater sound. When playing back discs or video
software that have been recorded in Dolby Pro Logic or Dolby
Digital Surround, astonishingly realistic sound surrounds the
listener to create anew level of audio/visual entertainment.
Independent control of the five channels allows the listener to
enjoy the same type of sound reproduction experienced in movie
theaters. Voices are reproduced in the front and center sound
field, while ambient sounds like cars and crowds are reproduced
on all sides of the listener for an incredibly lifelike audio/video
experience. Please read the following carefully to “tune” the
system’s output to match the characteristics of your listening
space.
Check the following:
●Before enjoying the DOLBY SURROUND sound, adjust the
proper balance of the speaker sound levels (see page 14).
●Make sure the speakers are properly connected and positioned
(see pages 3,4 and 5).
●Make sure the TV set and video unit are properly connected
(see page 3). “
●Make sure the disc and video tape, etc., support Dolby Pro
Logic or Dolby Digital Surround.
SELECTING DOLBY PRO LOGIC
TO SELECT ADOLBY PRO LOGIC MODE
1,?
1
2
Press the DOLBY SURROUND button repeatedly
to select the appropriate mode.
When selecting the DOLBY PRO LOGIC or 3STEREO mode,
the indicator lights up, and the selected mode name runs
through on the display. Each time the button is pressed, the
mode changes as shown below.
rDOLBY PRO LOGIC~ 3STEREO
DOLBY PRO LOGIC OFF(cancel) J
Press the DOLBY SURROUND button again and
The optimal Dolby Pro Logic mode depends on the type and
placement of the speakers. It is recommended that the optional
Aiwa speakers should be used for all channels, for example, the
SX-R1 200 for surround speakers, the SX-C1 200 for acenter
speaker and the SX-AV1 200 for front speakers. Check your
current type and placement of the speakers and select the
recommended Dolby Pro Logic mode accordingly.
The recommended mode
Center speaker
Larger-size Smaller-size No speaker
Surround speaker DOLBY PRO DOLBY PRO PHANTOM
(Rear speaker) LOGIC-WIDE LOGIC-NORMAL
No surround 3STEREO- 3STEREO- —
speaker WIDE NORMAL
PHANTOM mode: Select this mode when the center speaker is
not connected. All center channel signals are redistributed to
the left and right channel speakers.
3STEREO mode: Select this mode when the surround speakers
are not connected.
hold it down until the center speaker mode to be
selected appears.
When selecting the DOLBY PRO LOGIC mode in step 1:
“NORMAL!’, “WIDE and “PHANTOM” appear in turn.
When selecting the 3STEREO mode in step 1:
“NORMAL’ and “WIDE” appear one after the other.
m
●Depending on the sound source or listening condition, surround
effect may not be obtained even when the Dolby Pro Logic is
set to on.
●The full Dolby Pro Logic effect cannot be obtained when using
the software without IIEIIDDIBVSU-WWJImark. In this case, use
the DSP surround system instead (see page 8).
●The Dolby Pro Logic system is automatically canceled:
-when the DSP system is turned on
-when the 5.1 CH function is selected
-when headphones are plugged in
●The Dolby Pro Logic cannot be set to on while headphones
are plugged in.
13 ENGLISH

ADJUSTING SPEAKER LEVEL
BALANCE
13
1
2,4
3
The unit is equipped with abuilt-in test signal generator called a
noise sequencer for easy balance adjustment of all five channels.
The sequencer outputs anoise signal that “travels” from channel
to channel, enabling the simple adjustment of sound level to
achieve the same apparent loudness, at your listening position,
from each channel.
1Select the Dolby Pro Logic mode according to
your current type and placement of the speakers.
(See page 13.)
2Press the MANUAL SELECT button and hold it
down for about two seconds until “L/R OdB”
appears.
Anoise signal is sent to each channel in turn as follows:
DOLBY PRO LOGIC NORMAL or WIDE mode
+
IJR OdB(Left front speakerT1
+
CEN OdB (Center speaker)
4
UR OdB (Right front speaker)*l
+
S-R OdB (Right surround speaker)”z
4
S-L ?dB (Left surround speaker)* 2
DOLBY PRO LOGIC PHANTOM mode
rUR OdB*l +UR OdB*l
S-L 0dB*2~ S-R 0dB*2 d
3STEREO NORMAL or WIDE mode
~UR OdB*’+ CEN OdB +UR 0dB*17
3
4
Adjust the sound level of the center and surround
speakers.
While “CEN”, “S-L’ or “S-R” flashes in the display, press the
UPA or DOWNY button so that the sound level of the center
or surround speakers matches that of the front speakers.
The balance of the front speakers can be adjusted as well
while “UR is displayed.
Press the MANUAL SELECT button again to stop
the noise signal.
m
When adjusting the speakers level balance of the Dolby Pro
Logic, those of the DSP and 5.1 CH modes are also changed.
About the channels
The left and right speakers create the stereo effect.
The center speaker helps achieve precise sound positioning
over abroad sound field.
The rear-mounted surround speakers enhance the “depth” of
the sound field.
To change the surround speakers delay time of the Dolby
Pro Logic mode
The surround speakers reproduce sounds asplit second after
the front speakers. The delay is initially set to 20 ms
(milliseconds).
To change this standard delay time, press the MANUAL SELECT
button repeatedly so that “SUR” is displayed. Then, press the
UPA or DOWN~ button. Each time one of the buttons is
pressed, the delay time changes as shown below.
+15ms-20’ms 4+30ms +
To adjust the speakers level balance while listening to
the source (Dolby Pro Logic and 5.1 CH modes)
The speakers level balance can be changed after adjusting it
with the noise sequencer. The balance can be changed whenever
the Dolby Pro Logic system is turned on or the 5.1 CH function
is selected.
1
2
3
Play adisc or video software recorded in Dolby Pro Logic or
Dolby Digital Surround.
Press the MANUAL SELECT button repeatedly so that ‘W!”,
“CEN”, “S-P’ or “S-R appears on the display.
Press the UPA or DOWNV button while the speaker name
to be adjusted is displayed.
‘1 “L” or “R flashes to indicate one of the front speakers from which
the noise signal is output.
*2 The noise signal is output from the L and Rsurround speakers at
the same time.
ENGLISH 14

SETTING THE CLOCK SETTING THE SLEEP TIMER
1,3,5
2,4
CLOCK
When the AC cord is connected for the first time, the clock on
the display flashes.
Set the time aa follows while the power is off.
1
2
3
4
5
Press the SET button.
The hour flashes.
Press the DOWN7 or UPA button to designate
the hour.
Press the SET button to set the hour.
The hour stops flashing and the minute starts flashing,
Press the DOWNY or UPA button to designate
the minute.
Press the SET button to set the minute.
The minute stops flashing on the display and the clock starts
from 00 second.
To correct the current time
Press the POWER button to turn the unit off. Press the SET
button and carry out steps 1to 5above.
To display the current time
Press the CLOCK button on the remote control. The clock is
displayed for 4seconds.
To switch to the 24-hour standard
Press the POWER button while pressing the UPA or DOWNY
button while the current time is displayed.
Repeat the same procedure to restore the 12-hour standard.
If the clock display flashes while the power is off
This is caused by apower interruption. The current time needs
to be reset.
If power is interrupted for more than approximately 24 hours, all
settings stored in memory after purchase need to be reset.
1
2
The receiver can be automatically turned off at aspecified time.
Use the remote control.
1Press the SLEEP button.
2Press the UPF or DOWN< button within
four seconds to specify the time until
the power is turned off.
Each time the button is pressed, the time changes between 5
and 240 minutes in 5-minute steps.
Specified time
To check the time remaining until the power is turned off
Press the SLEEP button once. The remaining time is displayed
for four seconds.
To cancel the sleep timer
Press the SLEEP button twice so that “SLEEP on the display
disappears.
15 ENGLISH

CARE AND MAINTENANCE SPECIFICATIONS
Occasional care and maintenance of the unit is needed to
optimize the performance of your unit.
To clean the cabinet
Use asoft dry cloth.
If the surfaces are extremely dirty, use asoft cloth lightly
moistened with mild detergent solution. Do not use strong
solvents, such as alcohol, benzine or thinner as these could
damage the finish of the unit.
FM tuner section
Tuning range 87.5 MHz to 108 MHz
Usable sensitivity 13.2 dBf
(IHF)
Antenna terminals 75 ohms (unbalanced)
AM tuner section
Tuning range 530 kHz to 1710 kHz (10 kHz step),
531 kHz to 1602 kHz (9 kHz step)
Usable sensitivity 350 pV/m
Antenna Loop antenna
Amplifier section
Power output [Stereo Mode]
Front
65 watts per channel, Min. RMS at 8
ohms, from 40 Hz to 20 kHz, with no
more than 0.97. Total Harmonic
Distortion
[Dolby Pro Logic or 5.1 CH Mode]
Front
50 watts per channel, Min. RMS at 8
ohms, from 40 Hz to 20 kHz, with no
more than 0.9% Total Harmonic
Distortion
Rear (Surround)
25 watts per channel, Min. RMS at 8
ohms, 1kHz, with no more than 0.9°L
Total Harmonic Distortion
Center
50 watts, Min. RMS at 8ohms, 1kHz,
with no more than 0.97. Total
Harmonic Distortion
Total harmonic 0.08 %(40 W, 1kHz, 8ohms, Front)
distortion
Inputs AUDIO IN
PHONO: 2.5 mV, adjustable (47
kohms)
CD: 200 mV, adjustable (47
kohms)
TAPE MONITOR: 300 mV (47
kohms)
VIDEO l/DVD/MD, VIDEO 2/LD/
TV, VIDEO 3, AUX: 200 mV,
adjustable (47 kohms)
5.1 INPUT
FRONT, CENTER: 450 mV (47
kohms)
SURROUND: 300 mV (47
kohms)
SUB-WOOFER: 400 mV (47
kohms)
VIDEO IN: 1Vp-p (75 ohms)
ENGLISH t6

outputs AUDIO OUT (REC OUT): 200 mV (1
kohm)
VIDEO OUT (MONITOR): 1Vp-p (75
ohms)
SUPER WOOFER: 1.2 V
FRONT SPEAKERS IMP: 8Q
(front speakers Aand B): accepts
speakers of 8ohms or more.
SURROUND SPEAKERS IMP: 8f2
(surround speakers): accepts
speakers of 8ohms or more
CENTER SPEAKER IMP: 8Q: accepts
aspeaker of 8ohms or more.
PHONES (stereo jack): accepts
headphones of 32 ohms or more
Muting –20 dB
General
Power requirements 120 VAC, 60 Hz
Power consumption 135W
Dimensions 430 x155x 351 mm
(W XHXD) (17 x61/8 X137/8 in.)
Weight 9.4 kg (20 lb 12 OZ.)
Specifications and external appearance are subject to change
without notice.
DOLBY PRO LOGIC
Manufactured under license from Dolby Laboratories Licensing
Corporation.
“DOLBY” the double-D symbol 00 and “PRO LOGIC”
trademarks of Dolby Laboratories Licensing Corporation. are
TROUBLESHOOTING GUIDE
If the unit fails to perform as described in these Operating
Instructions, check the following guide.
GENERAL
There is no sound.
●Is the AC cord connected properly?
●Is there an incorrect connection? (+ page 3)
●There may be a short circuit in the speaker terminals.
+Disconnect the AC cord, then correct the speaker
connections.
●Was an incorrect funetion button pressed?
●Are the FRONT SPEAKERS Aand Bbuttons set correctly?
(+ page 6)
Sound is emitted from one speaker only.
●Is the BALANCE set appropriately?
●Is the other speaker disconnected?
Sound is heard at avery low volume.
●Has the MUTING button been pressed?
An erroneous display or amalfunction occurs.
~Reset the unit as stated below.
TUNER SECTION
There is constant, wave-like static.
●Is the antenna connected properly? (+ page 5)
●Is the FM signal weak?
+Connect an outdoor antenna.
The reception contains noise interference or the sound is
distorted.
.Isthe system picking up external noise or multipath distortion?
+Change the orientation of the antenna.
+Move the unit away from other electrical appliances.
To reset
If an unusual condition in the display window or malfunction
occurs, reset the unit as follows.
1Press the POWER button to turn off the power.
2Press the POWER button while pressing the SET button.
Everything stored in memory after purchase is canceled.
If the power cannot be turned off in step 1because of a
malfunction, reset by disconnecting the AC cord and carry out
step 2.
17 ENGLISH

PARTS INDEX
Instructions about each part on the unit or remote control are
indicated on the pages listed below.
~a;~habetical order)
AUX
BALANCE
CD
CLOCK
DOLBY SURROUND
DOWN V(<)
DSP
FRONT SPEAKERS A, B
GEQ
MANUAL SELECT (TEST)
MONO TUNER
MUTING, MUTE
PHONES
PHONO
POWER
SET
SLEEP
TAPE MONITOR
T-BASS
TUNER (TUNER BAND)
UP A(P)
VIDEO 1/5.1 CH
VIDEO 2
VIDEO 3
VOLUME (V, A)
Pages
6, 9
7
6, 9
15
13, 14
8,11,12,14,15
8
6
8
8, 14
11
7
6
6, 9
6,11,15
12, 15
15
6,9,10
7
6,9,11,12
8,11,12,14,15
6,9,10
6, 9
6,9
7
ENGLISH18

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Anotacion del propietario
Para su conveniencia, anote el ntimero de modelo yel numero
de serie (Ios encontrara en el panel trasero de su aparato) en el
espacio suministrado mas abajo. Mencionelos cuando se ponga
en contacto con su concesionario Aiwa en caso de tener
dificultades.
N.” de modelo N.” de serie (N.” de Iote)
AV-D25
PRECAUCIONES
Antes de utilizar la unidad, lea cuidadosa ycompletamente este
manual instrucciones. Guarde el manual de instrucciones para
futuras referencias. Todos Ios avisos yprecauciones del manual
de instrucciones yde la unidad deberan seguirse estrictamente,
asi como Ias sugerencias de seguridad indicadas acontinuaci6n.
Instalacion
1
2
3
4
5
6
7
Agua yhumedad —No utilice esta unidad cerca del agua,
como al Iado de una bafiera, un Iavabo, una piscina, etc.
Calor —No utilice esta unidad cerca de fuentes termicas,
como salidas de calefaccion, estufas, ni demas aparatos que
generen calor.
Tampoco debera someterse atemperatures inferiors a5°C
(41“F) ni superiors a35°C (95°F).
Superficie de montaje —Coioque la unidad sobre una
superficie plana ynivelada.
Ventilation —La unidad debera colocarse donde tenga
espacio suficiente asu airededor para asegurar su ventilation
adecuada. Deje un espacio Iibre de 10 cm en la parte posterior
ysuperior de la unidad, yde 5 cm acada Iado.
-No la coloque sobre una cama, una alfombra, ni nada similar
que pueda bloquear Ias aberturas de ventilaci6n.
-No la instaie en una Iibreria, un armario, ni un bastidor
cerrado, donde la ventilation podria ser deficient.
Entrada de objetos yIiquidos —Tenga cuidado de que en
el interior de la unidad no entren objetos pequefios ni Iiquidos
atraves de [as aberturas de ventilation.
Carritos yestantes —Cuando haya colocado omontado la
unidad sobre un estante o un carrito,
debera moverla con cuidado.
Las paradas repentinas, la fuerza
excesiva, oIas superficies desiguales
podrian causar el vuelco ola caida de la @!!!l 3
A&-
combinacion de la unidad yel carrito.
Montaje en una pared oen el techo —La unidad no debera
montarse en una pared ni en el techo, amenos que se
especifique en el manual de instrucciones.
Eneraia electrica ~
1
2
3
Fuentes de alimentacion —Conecte esta unidad solamente
aIas fuentes de alimentacion especificadas en Ias
instrucciones de manejo, ycomo esta marcado en la unidad.
Polarization —Como medida de seguridad, algunas
unidades disponen de enchufes de alimentacion de CA
polarizados que solamente podran insertarse de una forma
en el tomacorriente de la red. Si es dificil oimposible insertar
el enchufe de alimentacion de CA en un tomacorriente de la
red, dele la vuelta eintentelo de nuevo. Si sigue sin poder
insertarse bien, Ilame a un tecnico de servicio cualificado para
que reemplace el tomacorriente, para evitar anular la funcion
de seguridad del enchufe polarizado, no 10inserte ala fuerza
en un tomacorriente.
Cable de alimentacion de CA
-Para desconectar el cable de alimentacion, tire del enchufe
de CA. No tire del propio cable.
-No tome nunca el cable de alimentacion de CA con Ias
manes htimedas, ya que esto podria resultar en incendios
odescargas electrical.
-No pise el cable de alimentacion ni 10 pine con objetos
colocados encima ocontra el, ya que podrian producirse
incendios odescargas electrical.
-Evite sobrecargar Ios tomacorrientes yIos cables
prolongadores por encima de su capacidad, ya que esto
podria resultar en incendios odescargas electrical.
IESPAfiOL