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REAR-PANEL CONNECTIONS  9

¡ Remote IR Input: Connect the output of a
remote infrared sensor or the remote control
output of another compatible Harman Kardon
product to this jack. This will enable the remote
control to operate even when the front-panel
Remote Sensor Û is blocked. This jack may
also be used with compatible IR remote control
based automation systems.

™ Remote IR Output: Connect this jack to
the IR input jack of another compatible Harman
Kardon remote controlled product to have the
built-in remote sensor Û on the CDR 25 pro-
vide IR signals to other compatible products.

£ Analog Output: These jacks carry the out-
put signal from the deck currently playing.
Connect them to the Tape Play/In input jacks
on a receiver, preamp or processor.

¢ Analog Input: These jacks accept the
analog signals that are used for CD recordings.
Connect them to the Tape Rec outputs on a
receiver, preamp or processor.

∞ Coaxial-Digital Output: This jack carries
the coaxial digital-audio output signal from the
deck currently playing. Connect it to a 
coaxial-digital input on a receiver, processor or
digital decoder.

§ Coaxial-Digital Input: This jack accepts
the digital-audio input signal from a compatible
digital audio product and should be connected
to a coaxial-digital output on a CD, MD or DVD
player or an A/V receiver or processor.

IMPORTANT NOTE: The coaxial digital outputs
and inputs should only be connected to digital
input or output jacks. Even though they use the
same RCA type connector as standard analog
audio connections, DO NOT connect them to
conventional analog input or output jacks.

¶ Optical-Digital Input: This jack accepts
the digital-audio input signal from a compatible
digital audio product, and should be connected
directly to the optical-digital output on a CD, MD
or DVD player or an A/V receiver or processor.

• Optical-Digital Output: This jack carries
the optical digital audio output signal from the
desk currently playing. Connect it to an optical-
digital input on a receiver, processor or digital
decoder.

ª AC Power Cord: Connect this plug to an
AC outlet. If the outlet is switch controlled, make
certain that it is in the ON position.

£

ª

AC 120V  60Hz  20W

MODEL NO. CDR 25

HARMAN KARDON
NORTHRIDGE
CALIFORNIA. USA

¢

∞

§

¶

•

¡

™

¡ Remote IR Input
™ Remote IR Output 
£ Analog Output

¢ Analog Input
∞ Coaxial-Digital Output
§ Coaxial-Digital Input

¶ Optical-Digital Input
• Optical-DIgital Output
ª AC Power Cord

10 REMOTE CONTROL FUNCTIONS

0 Power-On Button

1 Play Deck (CDP) Display Control

2 Play Deck (CDP) Open

3 Play Deck (CDP)Select

4 Program

5 Previous-Track Skip

6 Repeat

7 Clear

8 Reverse Search

9 Play/Select

A Random Play

B Dub

C Automatic/Manual Track Increment Selector

D Track Increment

E Finalize

F Numeric Keys

G Continuous Play

H Power Off

I Speed Select

J Record Button

K Erase Button

L Input Select

M CD Sync

N Stop

O Pause

P Forward Search

Q A-B Repeat

 Next Track/Skip

 Record Deck (CDR) Select 

 Record Deck (CDR) Open

  Record Deck (CDR) Display Control

ON

OFF

SEARCH

PLAY

SEARCH

STOP

PAUSE

PROG.

CLEAR

PREV

NEXT

POWER 

REPEAT

A – B

  

TR INCR FINALIZE

INPUT

ERASE

CD SYNC

REC

l

a

b

c

d

g

h

i

e

k

j

m

n

o

AUTO/MAN DUB

1

2

3

4

7

5

6

8

9

0

I

J

K

M

SPEED

L

N

TIME

CD

R

T

IM

E

C

D

P

p

Q

O

P

f

C

ON

TINUOU

S

IMPORTANT NOTE: Some of the remote’s func-
tions including Play, Pause, Stop, Search, Next
and Previous Track, are shared between the two
decks. Always remember to press the CDP
Select button 

3 to use the remote to con-

trol the Play Deck, or press the CDR Select
button 

 to control the Record Deck.

When you press one of these buttons, an indica-
tion of CDP or CDR will appear in the appro-
priate Information Display K.

REMOTE CONTROL FUNCTIONS  11

0 Power-On Button: Press this button to
turn the CDR 25 on. Note that in order for this
control to function, the Front-Panel Power
Switch 1 must first be pressed so that the unit
is in the Standby mode.

1 Play Deck (CDP) Display Control: Press
this button to cycle through the various time dis-
play options for the disc in the Play Deck 3.
See page 17 for more information on time-dis-
play options.

2 Play Deck (CDP) Open: Press this button
to open the Play Deck 3.

3 Play Deck (CDP) Select: Press this button
to control or program the functions of the disc in
the Play Deck 3.

4 Program: Press this button to begin the
programming sequence for one of the CD decks.
See page 18 for more information on program-
ming the CDR 25.

5 Previous-Track Skip: Press this button to
skip backwards to the beginning of the track
currently being played. Press it a second time to
move back to the beginning of each previous
track.

6 Repeat: Press this button once to repeat
the current track. To repeat an entire disc, press
the button twice.

7 Clear: Press this button to clear an item in
a program sequence. See page 18 for more infor-
mation.

8 Reverse Search: Press this button to play
the selected disc in reverse to locate a desired
passage.

9 Play/Select: This button has two functions.
It will most often be used as a standard play
button, but when setting up certain record func-
tions, it is also used as an Enter or Select button.

A Random Play: When the CD Deck is
stopped, press this button to begin random play
of all tracks on a disc.

B Dub: Press this button to begin a dub. See
page 19 for more information on dubbing.

C Automatic/Manual Track Increment
Selector: Press this button to select between
automatic and manual track increments during a
recording session. See page 21 for more infor-
mation on track increments.

D Track Increment: When the Manual mode
for track increments is selected during recording,
press this button to increase the track number.
NOTE: This function does not operate during CD
Sync or dub recording.

E Finalize: Press this button when a record-
ing is complete to initiate the finalization
process. The Play/Select button *

9 must

be pressed within three seconds to activate
finalization. Until this button is pressed and the
finalization process is complete, CD-R or CD-RW
discs may not be played on conventional CD
machines. See page 22 for more information on
Finalization.

F Numeric Keys: Press these buttons to
access a specific track for playback or during the
programming process. See page 18 for more
information on programmed playback.

G Continuous Play Button: Press this but-
ton to place the CDR 25 in the Continuous Play
mode. In that mode the unit will play all tracks
on the disc in one tray, switch to the second tray
and play all tracks, and then continuously alter-
nate between the two discs until the unit is
stopped or the button is pressed again to return
to the Single Play mode.

H Power-Off: Press this button to place the
unit in a Standby mode.

I Speed Select: Press this button to select
the recording speed for internal dubs. See page
20 for more information on selecting the proper
speed.

J Record Button: Press this button to begin
a manual recording.

K Erase Button: Press this button to initiate
the erasure of a track or of an entire CD-RW disc
or to Unfinalize a disc. Note that erasure is only
possible on CD-RW discs. See page 22 for more
information on erasing discs.

L Input Select: Press this button to select
the input source (analog or digital-coax) for
recording. See page 20 for more information on
input selection.

M CD Sync: Press this button once to begin
an automated recording of a single track from
an external CD player when a digital connection
is used. Press it twice to begin automated
recording of an entire disc. See page 20 for
more information on CD Sync recording.

N Stop: Press this button to stop playback or
recording.

O Pause: Press this button to momentarily
pause playback. Press it again to resume
playback.

P Forward Search: Press this button to play
a disc in a fast-forward mode.

Q A-B Repeat: Press this button to specify a
segment of a disc for repeat play. See page 18
for more information on repeat play.

 Next Track/Skip: Press this button to skip
forward to the next track on a disc.

 Record Deck (CDR) Select: Press this
button to control or program the functions of
the disc in the Record Deck %.

 Record Deck (CDR) Open: Press this but-
ton to open the Record Deck %.

  Record Deck (CDR) Display Control:
Press this button to cycle through the various
time-display options for the disc in the Record
Deck %. See page 17 for more information on
time-display options.

12 INSTALLATION AND CONNECTIONS

Important Note: To prevent possible damage
to your speakers or other components in your
audio system, we strongly recommend that ALL
system components, including the CDR 25, be
turned off and unplugged from their AC power
source when any connections are made or a
new component is installed.

Locating the CDR 25
Since the CD transports in the CDR 25 are preci-
sion instruments, they are subject to interference
from vibration. To minimize the possibility of
skipping during playback or recording, it is rec-
ommended that the unit be placed on a level,
solid, vibration-free surface.

When installing the CDR 25 in a cabinet or tight
space, always make certain that there is enough
room in front of the unit for the disc drawers to
open fully, and that there is enough space above
the unit so that discs may easily be inserted in
the disc drawers.

In addition to the safety considerations outlined
on page 4, it is also recommended that the CDR
25 not be placed in a location that is subject to
direct sunlight or extreme heat or cold, as these
conditions may damage the discs used in the
player, or the player itself. Note that audio ampli-
fiers or high-power receivers, as well as certain
other electronic products, may generate signifi-
cant heat. For that reason, do not place the CDR
25 directly on top of an amplifier, receiver, or
other heat source. Always allow at least 2 cm of
free space on all sides of the CDR 25, as well as
other electronic products, to allow for proper
ventilation.

The unit should also be kept away from sources
of water or damp conditions.

Connections to Your Audio System
When connecting the CDR 25, think of the
process as if your were connecting a standard
CD player and a tape or cassette recorder, with
the addition of the digital connections.

Depending on the capabilities of your receiver,
preamp or processor, you may find it convenient
to connect the analog inputs and outputs to the
jacks marked for a tape recorder. As the CDR
25’s functions resemble those of a standard tape
recorder, this might make it easier to select it as
an input on your receiver or preamp. Connect
the analog Output jacks £ to the Play/In
jacks of a Tape or Aux input on your receiver or
preamp. Connect the Analog Input jacks ¢
to the Tape Rec/Out jacks on your receiver or
preamp.

To play the output of the Record Deck through
the digital decoder in your receiver or an exter-
nal processor, connect the Coaxial-Digital
Output jacks ∞ or the Optical-Digital
Output Jacks • to the matching digital-input
jacks on your receiver or processor. Note that
you may have to change a setting on the receiv-
er or processor to link the digital input to the
“Tape” button or the specific input selector
associated with the digital inputs. Consult the
owner’s manual on your receiver or processor for
details, as this configuration may vary from unit
to unit.

To make recordings from external digital
sources, such as a CD, DVD or MD player, con-
nect the Coaxial Digital Input Jacks § or
the Optical-Digital Input Jacks ¶ on the
CDR to the digital output jacks on your receiver
or processor. If your receiver does not have digi-
tal-output jacks, you may connect the Coaxial
Digital Input Jacks § or the Optical-Digital
Input Jacks ¶ on the CDR 25 directly to the
digital outputs on your CD player or other digital
device.

Connections to a portable digital CD or MD
player may also be made by connecting the
Coax or Optical Digital Output of the player to
the Front-Panel Digital Input 6 on the 
CDR 25. Note that when both digital inputs are
connected, the CDR 20 will give priority to the
Front-panel input 6.
If it is impractical to disconnect the front-panel
input when you need to use the rear-panel jack,
simply turn off the device connected to the
front-panel input. This will stop the digital
signal, and permit the rear-panel jack to be
used.

COAX CONNECTIONS: Although digital-coax
connections use the same type of “RCA” phono
jack as standard analog signals, please take spe-
cial care to connect digital signals only to digital
jacks. In many cases, the digital jacks may be
identified by an orange colored insert ring
around the center of the jack. When making dig-
ital connections, be sure to use coax-intercon-
nect cables, such as the one supplied with the
CDR 25 or cables intended for video applica-
tions. Even though they have the correct type of
RCA connector, do not use audio-interconnect
cables that have twisted pair construction, as
they are not appropriate for digital signal use. If
you have any questions about the type of cables
to use with the CDR 25, consult your dealer.

OPTICAL CONNECTIONS: There are a number
of different types of optical connections, so make
certain that you use only “TOS” type optical
cables with the CDR 25. To ensure proper con-
nection of optical cables, fully insert them into
the jack until there is an audible click. This tells
you that the connector has been completely
inserted. Remember to save the plastic dust caps
that cover the optical jacks, and replace them
when a jack is not in use to prevent dust from
entering the connection point.