Introduction 

The Harman Kardon CD Recorder CDR-20 is a reliable and stylish CD player designed to deliver high-quality audio. With its sleek modern design, it seamlessly integrates into any audio setup. Supporting standard audio CDs, it features intuitive controls and a user-friendly interface, making navigation effortless. Equipped with a built-in DAC, this player ensures clear audio output. Additionally, its compact size allows easy placement anywhere without taking up much space. Priced at approximately $150, it offers practical convenience and excellent performance for music enthusiasts. Its sturdy construction guarantees long-term use, ensuring durability and reliability. With CD recording capabilities, you can easily archive your favorite songs from other audio sources onto blank CDs. Overall, the Harman Kardon CDR-20 provides a reliable solution for enjoying music from CDs while offering convenient recording features.

Technical Specifications

Signal Format

• Playback Sampling Frequency: 44.1kHz
• D/A Conversion: 96kHz, Multi-Bit Delta-Sigma Conversion
• Oversampling: 128 Times

Playback Specifications

• Frequency Response: 2Hz – 20,050Hz
• Playback S/N: 105dB
• Playback Dynamic Range: 105dB
• Playback THD: 0.005%/–88dB
• Analog Audio Output: 2V RMS, ± 2dB
• Digital-Coaxial Output: 0.5Vpp/75Ω
• Headphone Output: 1V RMS/32Ω Load

Record Specifications

• Digital Input Sample Rates: 32kHz – 96kHz
• Recording S/N: Analog: 91dB
• Recording S/N: Digital Dub Mode: Equal to Source
• Recording S/N: Digital External Source: Source –10dB
• Recording Dynamic Range: 91dB
• Recording THD: 0.005%/–85dB
• Analog Input Sensitivity: 330mV RMS 47kΩ = 0dB
• Digital Inputs (Direct Recording): 44.1kHz, ±100 ppm/min.

General

• Power Requirement: 100240 VAC/5060Hz
• Power Consumption: 28 Watts

Dimensions

• Width: 17.3"/440mm
• Height: 4.4"/112mm
• Depth: 14.2"/363mm
• Weight: 10.5 lb/4.7kg

The CDR 20 CD Player/Recorder is a unique product, designed not only to play back your existing library of compact discs, but also to record compact discs from either analog or digital programs. You may feed signals (for recording) to the CDR 20 from external sources such as an A/V receiver, a tuner, a tape deck or a CD player, or you may simply place a CD in one deck, and make a copy using a recordable CD in the other deck.

Designed and engineered by Harman Kardon, the CDR 20 is among the first audio CD recorders with x4 speed capability. This means that it will take only 15 minutes to copy a 60-minute disc.

The CDR 20 not only records with the highest speed and quality available but it is also an audiophile CD player. Through the use of audiophile-grade digital-to-analog converters (DACs), the CDR 20’s performance rivals the most sophisticated high-end players. Should you wish to bypass the internal DACs and use an external digital processor, coax and optical digital outputs are available. Thanks to the CDR 20’s dual-tray design, you may even play back two separate discs at the same time, for parties or multi-room applications. To make CD playback more enjoyable, the CDR 20 also features a wide range of program and repeat functions.

Special Features

• Dual-Deck CD Player and CD-R/CD-RW Recorder
• X4 Dub Speed for Both CD-R and Erasable CD-RW Discs
• Audiophile-Grade Digital-to-Analog Converters for Highest Audio Quality
• Dual-Play Capability
• Extensive Playback Programming Capabilities
• Coaxial and Optical Digital Inputs and Outputs
• Front-Panel Coaxial Digital Input for Use with Portable Devices
• Sample-Rate Converter Allows Use of DAT Players as Digital Source
• Ergonomic Remote Control

Important Information About CD Recording In order to get the most enjoyment from your new CD-R recorder, please pay special attention to the following sections of the manual that provide information about the special features and capabilities of CD Recorders.

• The CDR 20 plays all standard CD audio discs but for recording, the CDR 20 uses special CD-R and CD-RW discs designed only for audio use. CD-R discs designed for computer use will not work in the CDR 20. See page 14 for more information on which types of discs are used with the CDR 20.
• The last step in making a CD-R recording is the finalization process. Unless this step is properly done, the disc will not work in other players. See page 22 for information on finalizing discs.
• Once finalized, CD-R discs will play in any CD player, but CD-RW discs will only play in the CDR 20 and certain other machines. Check the specifications of your CD player if you have questions about compatibility with CD-RW discs.
• As with all CD players, except those designed specifically for portable use, you should never move a CD player while there is a disc inside one of the decks. NEVER move the CDR 20 until discs have been removed from both decks.

Safety Information Important Safety Information Verify Line Voltage Before Use
Your CDR 20 has been designed for use with 100- to 240-volt AC current. Connection to a line voltage other than that for which it is intended can create a safety and fire hazard and may damage the unit.
If you have any questions about the voltage requirements for your specific model, or about the line voltage in your area, contact your selling dealer before plugging the unit into a wall outlet.

Do Not Use Extension Cords
We do not recommend that extension cords be used with this product. As with all electrical devices, do not run power cords under rugs or carpets or place heavy objects on them.
Damaged power cords should be replaced immediately by an authorized service depot with cords meeting factory specifications.

Handle the AC Power Cord Gently
When disconnecting the power cord from an AC outlet, always pull the plug, never pull the cord. If you do not intend to use the unit for any considerable length of time, disconnect the plug from the AC outlet.

Do Not Open the Cabinet
There are no user-serviceable components inside this product. Opening the cabinet may present a shock hazard, and any modification to the product will void your guarantee. If water or any metal object such as a paper clip, wire, or a staple accidentally falls inside the unit, disconnect it from the AC power source immediately, and consult an authorized service station.
CAUTION: The CDR 20 uses a laser system. To prevent direct exposure to the laser beam, do not open the cabinet enclosure or defeat any of the safety mechanisms provided for your protection.
DO NOT STARE INTO THE LASER BEAM. To ensure proper use of this product, please read this owner’s manual carefully and retain it for future use. Should the unit require maintenance or repair, please contact your local Harman Kardon service station. Refer servicing to qualified personnel only.

Installation Location

• To assure proper operation and to avoid the potential for safety hazards, place the unit on a firm and level surface. When placing the unit on a shelf, be certain that the shelf and any mounting hardware can support the weight of the product.
• Make certain that proper space is provided both above and below the unit for ventilation. If this product will be installed in a cabinet or other enclosed area, make certain that there is sufficient air movement within the cabinet.
• Do not place the unit directly on a carpeted surface.
• Avoid installation in extremely hot or cold locations, or an area that is exposed to direct sunlight or heating equipment.
• Avoid moist or humid locations.
• Do not obstruct the ventilation slots on the top of the unit, or place objects directly over them.

Cleaning When the unit gets dirty, wipe it with a clean, soft dry cloth. If necessary, wipe it with a soft cloth dampened with mild soapy water, then a fresh cloth with clean water. Wipe dry immediately with a dry cloth. NEVER use benzene, aerosol cleaners, thinner, alcohol, or any other volatile cleaning agent. Do not use abrasive cleaners, as they may damage the finish of metal parts. Avoid spraying insecticide near the unit.

Moving the Unit Before moving the unit, be certain to disconnect any interconnection cords with other components, and make certain that you disconnect the unit from the AC outlet.
IMPORTANT NOTE: To avoid damage to the CDR 20 which may not be covered by the warranty, be certain that all discs are removed from the unit before it is moved. Once the CDR 20 is installed, discs may be left in the unit when it is turned off, but the unit should NEVER be moved with discs left in either deck.

Front-Panel Controls

1. Power Switch: Press this switch to apply power to the CDR 20. When the unit is first turned on, the Status-Mode Indicator 2 surrounding the switch will turn green. Once the unit has been turned on with this switch, it may be operated from either the front panel or remote control. Press the switch again to turn the unit completely off.
2. Status-Mode Indicator: When the CDR 20 is in the ON mode, this indicator will glow green. When the unit has been placed in the Standby mode by pressing the Power-Off button 32 on the remote, the indicator will glow amber, indicating that the unit is still connected to the AC main supply and is ready to be turned on from the remote control.
3. Play Deck: This disc deck is used to play back conventional CD discs and CD-R or CD-RW discs that have been finalized.
4. Headphone Jack: Connect standard headphones to this jack for private listening.
5. Headphone Level Control: Turn this control to adjust the volume level to the headphones. Note that the use of this control will not change the analog output levels at the rear-panel audio outputs Áª.
6. Digital Input: This coaxial digital input may be used to connect a portable digital audio player to the CDR 20 for digital recording. When an active digital signal is connected to both the front- and rear-panel coaxial inputs, the source connected to the front-panel input will be selected for recording.
7. Play-Deck Open: Press this button to open the Play Deck 3.
8. Record Button: Press this button to begin the recording process. See pages 20-22 for more information on CD recording.
9. 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 21 for more information on CD Sync recording.
10. Dubbing: Press this button to begin the process of making a complete copy of the disc in the Play Deck 3 to a CD-R or CD-RW disc in the Record Deck %. See page 20 for more information on dubbing.
11. Erase: Press this button to erase one or more tracks or the entire contents of an unfinalized CD-RW disc. When a CD-RW disc has already been finalized you may erase the entire disc or you may “unfinalize” the disc by erasing the TOC data. See page 22 for more information on erasing CD-RW discs.
12. Finalize: Press this button when a recording is complete to initiate the finalization process. The Play/Select Button *j must be pressed within three seconds to activate finalization. Until this button is pressed and the finalization process is complete, CD-R discs may

Front-Panel Information Display

1. Random Indicators
2. Program Indicators
3. Level Indicators
4. Repeat Indicators
5. Repeat-Status Indicators
6. Speed Indicators
7. Copy-Prohibit Indicator
8. Dubbing Indicator
9. Sync Indicator
10. Dual-Play Indicator
11. Information Displays
12. Time Indicators
13. Remaining-Time Indicators
14. Total-Time Indicators
15. Track-Time Indicators
16. R/RW Indicator
17. Play/Pause Indicators
18. Sample-Rate Converter
19. CD Indicators
20. Record Indicator
21. Finalize Indicator
22. Erase Indicator
23. Auto Indicator
24. Analog Indicator
25. Digital Indicator

Important Note: Since the CDR 20 is a dual-deck player/recorder, there are two separate sets of indicators for the Random, Program, Repeat, Repeat Status, Time, Total Time, and Track Time. In addition, there is a separate Information Display, Play/Pause Indicator, and CD Indicator for each deck. As the function of these indicators is identical for both decks, they are described in this manual with a common letter. When the CDR 20 is playing or recording a disc, any indicators that light on the left side of the display describe the status of the Play Deck, while those that light on the right side of the display describe the status of the Record Deck. Depending on the activity of the unit and the settings you select, different indicators may light on the two sides at the same time.

1. Random Indicators: These indicators light when random playback has been programmed for one of the CD decks. See page 16 for more information on random play.
2. Program Indicators: These indicators light when one of the CD decks is being programmed for playback options. See page 18 for more information on programmed play.
3. Level Indicators: These LEDs display the input level during an analog recording, and the output level during playback. See page 22 for more information on record levels.
4. Repeat Indicators: These indicators light when a repeat function is being used. See page 18 for more information on repeat play.
5. Repeat-Status Indicators: These indicators display the type of repeat function being used. See page 18 for more information on repeat status.
6. Speed Indicators: These indicators show which record speed has been selected for dub recordings. See page 20 for more information on record-speed selection.
7. Copy-Prohibit Indicator: This indicator lights when a recording is not possible due to the intervention of the Serial Copy Management System (SCMS). See page 20 for more information on SCMS.
8. Dubbing Indicator: This indicator lights when a dub is in progress between the two CD decks. See page 20 for more information on CD dubbing.
9. Sync Indicator: This indicator lights when the unit has been programmed for a CD Sync recording. See page 21 for more information on CD Sync recordings.
10. Dual-Play Indicator: This indicator lights when the unit is playing in the Dual mode, which allows both CD decks to act as playback decks at the same time. See page 17 for more information on the dual-play mode.
11. Information Displays: These displays serve two functions, showing the time displays for discs playing, and displaying messages about discs or recordings.
12. Time Indicators: These indicators light in conjunction with one of the time indicators (M, N, O) to show which of the time status modes is active.
13. Remaining-Time Indicators: These indicators light when the Information Display (K) shows the time remaining on a disc.
14. Total Time: These indicators light when the Information Display (K) shows the total time of all tracks on a disc.
15. Track Time: These indicators light when the Information Display (K) shows the running time of the individual track being played.
16. R/RW Indicator: This indicator shows which type of recordable disc is present in the Record Deck (%). When a CD-R disc is present, only the "R" is lit. The "RW" lights when an erasable CD-RW disc is in use.
17. Play/Pause Indicators: These indicators show the status of the individual CD decks. The "Play" indicator lights when the CD is playing, and the "Pause" indicator lights when the unit is in a Pause mode.
18. Sample-Rate Converter: This indicator lights when the Sample-Rate Converter is in use to change the digital sample rate when the incoming signal is not the standard 44.1 kHz used by standard CDs. This is an automatic function and does not require any user intervention.
19. CD Indicators: These indicators light when a standard CD is playing in either deck.
20. Record Indicator: This indicator lights when the unit is making a recording and flashes during the preparations for recording.
21. Finalize Indicator: This indicator lights when the unit is in the Finalization process, which is required before a CD-R disc may be played on a standard CD machine. See page 22 for more information on Finalization.
22. Erase Indicator: This indicator lights when a CD-RW disc is being erased. Note that only CD-RW discs may be erased; it is not possible to erase a CD-R disc. See page 22 for more information on erasing discs.
23. Auto Indicator: This indicator lights when the automatic method of incrementing tracks is selected for a recording session. See page 21 for more information on track increments.
24. Analog Indicator: This indicator lights when an analog source is being recorded. See page 21 for more information on source selection.
25. Digital Indicator: This indicator lights when a digital source is being recorded. See page 21 for more information on source selection.

Rear-Panel Connections

1. Play Deck (CDP) Analog Output:
   These jacks carry the analog audio output signal from the Play Deck³. Connect them to the CD input jacks on a receiver, preamp, or processor.
2. Record Deck (CDR) Analog Output:
   These jacks carry the output signal from the Record Deck%. Connect them to the Tape Play/In input jacks on a receiver, preamp, or processor.
3. Record Deck (CDR) Analog Input:
   These jacks accept the analog signals that are used for CD recordings. Connect them to the Tape Rec/Play outputs on a receiver, preamp, or processor.
4. Play Deck (CDP) Coaxial-Digital Output:
   This jack carries the digital audio output signal from the Play Deck³. Connect it to a coaxial-digital input on a receiver, processor, or digital decoder.
5. Record Deck (CDR) Coaxial-Digital Output:
   This jack carries the digital audio output signal from the Record Deck%. Connect it to a coaxial digital input on a receiver, processor, or digital decoder.
6. Record Deck (CDR) Coaxial-Digital Input:
   This jack accepts the digital audio input signal from a compatible digital audio product and should be connected directly to a digital player or to a coaxial-digital output on a CD or DVD player or an A/V receiver or processor.
   • IMPORTANT NOTE: The coaxial digital 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.
7. Record Deck (CDR) Optical-Digital Input:
   This jack accepts the digital audio input signal from a compatible digital audio product and should be connected to the optical-digital output on a CD or DVD player or an A/V receiver or processor.
8. Play Deck (CDP) Optical-Digital Output:
   This jack carries the optical digital output signal from the Play Deck³. Connect it to an optical digital input on a receiver, processor, or digital recorder. This will typically be connected to the “CD” input.
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 is blocked. This jack may also be used with compatible IR remote control-based automation systems.
10. 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 on the CDR 20 provide IR signals to other compatible products.
11. 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.

Remote Control Functions

1. Power-On Button
2. Play Deck (CDP) Display Control
3. Play Deck (CDP) Open
4. Play Deck (CDP) Select
5. Program
6. Reverse Search
7. Single
8. Program Check
9. Previous-Track Skip
10. Play/Select
11. Random Play
12. Dub
13. Automatic/Manual Track Increment Selector
14. Track Increment
15. Finalize
16. Numeric Keys
17. A-B Repeat
18. Repeat
19. Speed Select
20. Record Button
21. Erase Button
22. Input Select
23. CD Sync
24. Stop
25. Pause
26. Next Track/Skip
27. Dual-Deck Playback
28. Forward Search
29. Record Deck (CDR) Select
30. Record Deck (CDR) Open
31. Record Deck (CDR) Display Control
32. Power Off
33. Clear

IMPORTANT NOTE: Some of the remote’s functions, including Play, Pause, Stop, Search, Next, and Previous Track, are shared between the two decks. Always remember to press the CDP Select button d to use the remote to control the Play Deck, or press the CDR Select button to control the Record Deck. When you press one of these buttons, an indication of CDP or CDR will appear in the appropriate Information Display K.

• Power-On Button: Press this button to turn the CDR 20 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.
• Play Deck (CDP) Display Control: Press this button to cycle through the various time display options for the disc in the Play Deck³. See page 17 for more information on time-display options.
• Play Deck (CDP) Open: Press this button to open the Play Deck³.
• Play Deck (CDP) Select: Press this button to control or program the functions of the disc in the Play Deck³.
• Program: Press this button to begin the programming sequence for one of the CD decks. See page 18 for more information on programming the CDR 20.
• Reverse Search: Press this button to play the selected disc in reverse to locate a desired passage.
• Single: When this button is pressed, the CDR 20 will function as a two-disc CD player/changer. In the Single mode, the audio output will be routed to all output jacks Áª¢°¥ regardless of which CD deck is actually playing. See page 17 for more information on the Single-Play mode.
• Program Check: Press this button to check or edit a programmed playback sequence. See page 18 for more information on programmed playback.
• 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.
• Play/Select: This button has two functions. It will most often be used as a standard play button, but when setting up certain record functions, it is also used as an Enter or Select button.
• Random Play: When the CD deck is stopped, press this button to begin random play of all tracks on a disc.
• Dub: Press this button to begin a dub. See page 20 for more information on dubbing.
• 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 information on track increments.
• 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.
• Finalize: Press this button when a recording is complete to initiate the finalization process. The Play/Select button j 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.
• 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.
• 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.
• Repeat: Press this button once to repeat the current track. To repeat an entire disc, press the button twice.
• Speed Select: Press this button to select the recording speed for internal dubs. See page 20 for more information on selecting the proper speed.
• Record Button: Press this button to begin a manual recording.
• 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.
• Input Select: Press this button to select the input source (analog or digital-coax) for recording. See page 21 for more information on input selection.
• 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 21 for more information on CD Sync recording.
• Stop: Press this button to stop playback or recording.
• Pause: Press this button to momentarily pause playback. Press it again to resume playback.
• Next Track/Skip: Press this button to skip forward to the next track on a disc.
• Dual Deck Playback: Press this button to enable both CD decks to play back at the same time and function as separate, independent CD units. In this mode, it is also possible to record from an external source while the Play Deck is functioning as a standard CD player. See page 17 for more information on dual-play capability.
  • Forward Search: Press this button to play a disc in a fast-forward mode.
  • 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 button 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.
  • Power-Off: Press this button to place the unit in a Standby mode.
  • Clear: Press this button to clear an item in a program sequence. See page 18 for more information.

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 20, be turned off and unplugged from their AC power source when any connections are made or a new component is installed.

Locating the CDR 20

Since the CD transports in the CDR 20 are precision instruments, they are subject to interference from vibration. To minimize the possibility of skipping during playback or recording, it is recommended that the unit be placed on a level, solid, vibration-free surface.

When installing the CDR 20 in a cabinet or tight space:

• Ensure there is enough room in front of the unit for the disc drawers to open fully.
• Allow adequate space above the unit for easy insertion of discs.
• In addition to the safety considerations outlined on page 4, it is also recommended that the CDR 20 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.
• Avoid placing the CDR 20 directly on top of an amplifier, receiver, or other heat source.

Ventilation:
Always allow at least one inch of free space on all sides of the CDR 20, 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 20, think of the process as if you were connecting a standard CD player and a tape or cassette recorder, with the addition of the digital connections.

Play-Deck Connections

The rear-panel connections labeled “CDP” refer to the outputs of the Play Deck³, which functions as a standard CD player.

• Analog Connections: Connect the analog left/right CDP outputs Á to the CD inputs on your receiver, preamp, or surround processor.
• Digital Connections: For best playback results, use a digital connection (coaxial or optical ¢¥ outputs) to the matching digital inputs of your receiver, preamp, processor, or external digital decoder.

Note: You may have to change a setting on the receiver or processor to link the digital input to the “CD” button or input selector. Consult the owner’s manual for details, as this configuration may vary.

Record-Deck Connections

• The rear-panel connections labeled “CDR” refer to the inputs and outputs for the Record Deck %.
• Depending on your receiver, preamp, or processor capabilities, you may find it convenient to connect the analog inputs and outputs to the jacks marked for a tape recorder.
• Connect the analog CDR-Out jacks ª to the Play/In jacks of a Tape or Aux input on your receiver or preamp.
• Connect the CDR-In 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 external processor:
• Connect the CDR Coax-Out jacks ° to the matching digital-input jacks on your receiver or processor.
• Note: You may need to change a setting on the receiver 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 for details, as this configuration may vary.
• To make recordings from external digital sources (e.g., CD, DVD, or MD player):
• Connect the CDR Coax-In jacks ¤6 or CDR Optical In Jack on the CDR to the digital output jacks on your receiver or processor.
• If your receiver lacks digital-output jacks, you can connect the CDR Coax In jacks ¤6 or CDR Optical In Jack directly to the digital outputs on your CD player or other digital device.

Front-Panel Connections

You can also connect a portable digital CD or MD player by linking the Coax Digital Output of the player to the Front-Panel Digital Input 6 on the CDR 20.

Note: When both the front and rear panel digital inputs are connected to external sources, the CDR 20 will prioritize the front-panel input 6.

If it is impractical to disconnect the front-panel input, simply turn off the device connected to it to stop the digital signal and allow the rear-panel jack to be used.

IMPORTANT NOTES ON DIGITAL CONNECTIONS

• Although digital-coax connections use the same type of “RCA” phono jack as standard analog signals:
  • Connect digital signals only to digital jacks. In many cases, digital jacks may be identified by an orange-colored insert ring around the center of the jack.
  • When making digital connections, be sure to use coax-interconnect cables, such as the one supplied with the CDR 20 or cables intended for video applications.
    • 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 20, consult your dealer.

Batteries

Insert the two AA batteries supplied with the CDR 20’s remote:

• Turn the remote over so the bottom is facing you.
• Gently lift the plastic tab on the battery cover up and away from you, and remove the lid.
• Insert the batteries, ensuring to follow the + and – polarity indications in the bottom of the compartment.

• Replace the cover by seating the two small tabs into the mating holes at the top of the remote, then gently push the cover down until the latch snaps into place with an audible click.

  

Note: When replacing batteries, it’s always a good idea to replace both at the same time. If the remote will not be used for an extended period, consider removing the batteries to avoid damage from corrosion. Batteries contain chemical substances; we recommend disposing of them properly and in compliance with local regulations.

IR Remote Connections

• If the CDR 20 is installed behind a cabinet or other obstruction that may block the path between the front-panel Remote Sensor ó and the location where you will use the remote, an optional external IR sensor may be used.
  • Connect the sensor to the Remote IR In Jack » on the rear panel. This jack may also be connected to the IR Output jack of another compatible Harman Kardon component or a compatible IR system remote product.
• You may also use the IR Sensor in the CDR 20 to send commands to other compatible remote products:
  • Connect the Remote IR Out Jack â to the input of the other product or system.

Power Connections

• Connect the AC Power Cord Ú to an AC power source. The CDR 20 uses sensitive, high-performance computer-grade CD drives; to protect them, consider using a surge protector, just as you would for a computer.
• If using the rear-panel AC outlet on a receiver or other product:
  • Ensure it provides at least 28 watts, and that the total power of all products connected does not exceed the maximum rated output of the product containing the outlets.
• If the CDR 20 is connected to a switched outlet, remember to turn on the outlet or product controlling it for the CDR 20 to operate.

CD Recording Basics

CD Recorders (CDRs) are similar to standard CD players, with the addition of the features andcontrols needed for recording. Functions such as play, search and programming for playback will be familiar, but the recorder will function slightly differently than what you may be used to for magnetic tape recorders

Disc Types

• Unlike a conventional CD player, the CDR 20 uses three types of discs, and it is important to understand how each one plays.
• Both decks in the CDR 20 will play back any conventional CD that bears this logo.
• Discs that bear this logo may be recorded on one time, and when they are finalized they will play in either deck in the CDR 20 or in any conventional CD player, including home, car and portable models. The Record Deck%on the CDR 20 may also be usedto record on these discs, and it will play CD-R/Audio discs even if they have not been finalized.
• Discs that bear this logo may be used for recording on the CDR 20, and they may also be erased and reused. They may be recorded on or played on the Record Deck%of the CDR 20 and in other CD-RW recorders or CD-RW compatible players. They will NOT play back in most current CD players unless the player is CD-RW compatible. CD-RW
• Audio discs will play on most DVD players once they have been finalized.
• Discs designed for use in computer CD-R drives may not be used for recording in the CDR 20. Only discs specifically designed for use in consumer CD audio recorders may be used. If you attempt to use a blank-computer-type recordable disc for recording on the CDR 20 you will see a NO AUDIO message in the Information DisplayKand recording will not be possible. However, discs that have been recorded in the CD-R drive of a computer may be played in the CDR 20, provided that they have been properly finalized in accordance with audio standard IEC958.
• Note that the CDR 20 is specifically designed for the recording and playback of consumer audio discs, and cannot be used to copy data discs, DVD discs, or other optical discs used by video- or computer-game systems.

CDR Terminology and Display Messages

Compact disc recording has its own special terminology, and some of the messages displayed by the CDR 20 may be new to you. Before using the CDR 20, you may wish to familiarize yourself with some of the terms used by the CDR 20. Additional error message displays may also appear. Please see page 23 for a complete explanation of error messages.

• Finalize: This term refers to the process that completes the recording of a disc by recording a final Table of Contents and preparing the disc so that it may be played on other machines. A CD-R disc may not be played on other CD players until it is finalized. However, once the finalization process is complete, a CD-R disc may not be recorded on again. Only CD-RW discs may be “Unfinalized,” so that additional tracks may be recorded on a disc.
• TOC: Stands for Table of Contents and it refers to the data recorded on each CD that tells the player how many tracks are on the disc, the total time of the disc and the running time of each individual track. Each time a disc of any sort is placed in the CDR 20, you will see a TOC to indicate that the unit is reading this data from the disc. This is required to copy the track information to any recording.
• OPC: Stands for Optical Processing Calibration. When you see this message in the Information Display for the Record Deck K, it means that the laser transport inside the unit is making the calibrations and adjustments needed so that the recording process is optimized for the specific disc in use.
• BUSY: When you see this message, it means that the Record Deck is completing part of the record operation. When you see this message, do not press any buttons; simply wait until the message clears from the display.
• DISC FULL: When there are only four seconds of record time remaining on a blank disc, a DISC FULL message will appear in the Information Displayû. When you see this message, you will need to stop the recording process and, when a CD-R is being recorded, insert a new blank disc or, when a CD-RW is in use, either use a new disc or erase existing tracks following the instructions on page 22.

CD Recording

Making recordings on the CDR 20 is simple and easy once you become accustomed to the basics of CD Recording. Before making your first recording, please take a moment to review the CDR Basics on page 14. In particular, you will need to become familiar with the types of discs that may or may not be used in the CDR 20. In addition, some terms used in the following pages may be new to you. The following definitions and information will help you to make CD recordings using the CDR 20’s many features:

Input Options

• The CDR 20 accepts analog inputs and digital coax or optical inputs. Before making a recording, be certain that you have selected the correct input.

Finalization of Discs

• After a disc is recorded, it must be finalized. This process adds a table of contents data to the disc and makes it playable on other machines. Until a disc is properly finalized, it may not be played on standard CD players.

Disc Types

• The CDR 20 may record on either CD-R or CD-RW discs, but they must be of the type specifically designed for use in consumer-audio CD recorders. These discs may be recognized by looking for the words “Digital Audio” in the compact disc logo on the blank disc or its packaging. Discs with the logo reading only “Compact Disc/Recordable” are designed for computer data recording, and they will NOT work in the CDR 20.
• CD-R discs may not be erased or have material added to them once they have been finalized.

Recording Capacity

• At least four (4) seconds of blank recording time must remain on an unfinalized disc for recording to take place.
• The maximum number of tracks that may be recorded on a disc is 99.

Compatibility Notes

• Note that some CD-R/CD-RW audio recording discs may be used for single-speed recordings only. If you use a disc with such a warning, make certain not to make a dub at x2 or x4 speed. However, the CDR 20 has been tested for compatibility with a wide range of blank discs from manufacturers throughout the world. In most cases, blank discs will produce high-quality recordings at any dub speed.
• In some rare cases, a CD player may not be compatible with CD-R discs. If you find that a CD-R disc plays in some players but not in others, the fault is most likely with the player, not with the recorded disc or the CDR 20. Remember that CD-RW discs made in the CDR 20 will play only in CD players that are specially designed to accommodate CD-RW discs. Note that most DVD players are compatible with finalized CD-RW discs.

Copy Protection

• Some commercial CD discs may contain a copy protection data bit that will prevent a digital copy of the disc from being dubbed. In that case, the Copy Prohibit Indicator will light to remind you that the inability to record is intentional, and not the result of a problem with the CDR 20.
• This product is equipped with the Serial Copy Management System (SCMS) to protect the rights of copyright owners. Although it is possible to make a copy of most CDs for your own personal use, it is not possible to make a digital copy from another digital copy, but it is possible to make an analog copy of a digital copy. RECORDINGS MAY BE MADE FOR PERSONAL USE ONLY, AND ANY UNAUTHORIZED COPYING IS SUBJECT TO THE APPLICABLE LAW.
• The CDR 20 will not copy DVD discs, computer data discs, CD-based computer or video-game discs, or digital audio discs with a sample rate that is not compatible with the range of the CDR 20’s sample-rate converter.

Methods of Recording on the CDR 20

Recordings on the CDR 20 may be made in a number of ways:

• Discs may be dubbed using the playback deck on the CDR 20 as a source. These copies may be made in real-time, at twice normal speed, or at four times normal playback speed.
• Recordings may be made from an external CD player or other digital source that is synchronized with the dub being made in the CDR 20.
• Recordings may be made from any compatible external digital source.
• Recordings may be made from an external analog source.
• CD-RW discs may not be erased and reused more than 99 times. This is a limitation of the CD-RW format, not a fault of the CDR 20.

Disc Dubbing

The easiest way to make a copy of an entire disc is to use the CDR 20’s internal dub capability.

Steps for Dubbing

1. First, insert a blank or unformatted disc in the Record Drawer. When the disc is inserted, the CDR 20 will examine it to determine if it is a CD-R or CD-RW disc and optimize itself for the best possible recording. This is indicated by the OPC message in the Information Display.
2. Place the disc to be dubbed in the Play Drawer and wait until the Table of Contents data is read and the Information Display shows the track and running time data for the disc.
3. Next, select a dub speed. The default speed is a real-time dub, where the recording takes as long as the actual running time of the disc. However, with the CDR 20, you may also select x2 dubbing or x4 dubbing. Press the Speed buttons to select a speed as indicated by the x2/x4 Indicators. When no Speed Indicator lights, the unit is set to real-time recording. Note that the slower the record-dub speed, the more tolerant the unit is of errors on the blank disc. However, with most high-quality blank discs, the 2x and 4x speeds should not present a problem.
4. Before beginning a dub, make certain that there is sufficient blank space on the record disc. To do this, first determine the time available on the blank disc by subtracting the time of previously recorded material (if any) that is shown in the record side Information Display, from the total time available on the disc. That number should be greater than the total time of the disc to be dubbed, which is shown in the play side Information Display.
5. When you are ready to start the dub, press the Dubbing Button. During this process, the Dubbing Indicator will light, the Record Indicator will flash, and a BUSY message will flash in the Record Deck’s Information Display. When both Information Display Indicators return to normal, with indications of 01 00:00, press the Play/Select Button to start the dub.

During the Dub

While the dub is in progress, you will see the track numbers and running time increase as the disc is copied. The Level Indicators will also flash, but this is only for your reference, as record levels may not be adjusted during digital recordings. It is possible to listen to the source disc while it is being dubbed by selecting the appropriate input on your receiver, preamp, or processor.

Important Note: When a high-speed (x2 or x4) dub is being made, you will hear the playback from the CDP outputs at the faster speed. Fast speed playback increases the pitch of a sound, and when played back at high volume levels, this may damage your speakers. DO NOT use high volume levels when listening to high-speed dubs while they are in progress.

The dub will stop automatically when the source disc has played through to the end. After the dub is finished, the Information Display will show an UPDATE message and then return to normal operation. To manually stop a dubbing operation, press the Stop button for either deck.

Finalizing the Dub

As with all recorded CD-R/CD-RW discs, the disc must be finalized before it can be played in other machines. See page 22 for instructions on disc finalization.

Notes on Dubbing

• If you wish to make a dub with the tracks in a different order from the original disc, omit tracks on a disc, or make a dub that mixes tracks from different discs, create a Program-Playback List before pressing the Play/Select button to start the dub. Instructions for creating a Program List may be found on page 18. 
  NOTE: Dubs containing Program Lists may be made at either the x1 or x2 speed. If you attempt to make a Programmed Dub at the x4 speed, the unit will automatically select the x2 speed.
• The Pause buttons do not operate while a dub is in progress.
• Tracks will be added automatically to mirror the track structure of the original disc.
• The Total Time indication of the recorded CD may vary slightly from the original due to variations in the spin speed of each drive, but this is normal. No information has been lost in the recording process.
• If the original disc being dubbed is a digital copy or if it contains copy-prohibit signals, the unit will automatically make an analog copy.

CD Sync Recording

CD Sync recording allows you to make an automatic digital recording from an external CD player or MD. During CD Sync Recording, the record unit starts in sync with the source, and tracks are added automatically.

Steps for CD Sync Recording

1. To make a CD Sync recording: First, ensure your playback source is selected and cued to the correct starting point. Next, select the appropriate digital input by pressing the Input button until the desired COAX or OPTICAL indication appears in the Record Deck Information Display. CD Sync recordings may only be made from digital sources.
2. Insert a blank disc into the Record Deck. The CDR 20 will examine the disc to determine if it is compatible.
3. To start the CD Sync recording, press the Dubbing button. The Dubbing Indicator will light, and the Record Indicator will flash. The CDR 20 will automatically start recording and will add tracks as they are detected by the device. The Information Display will indicate the elapsed time and track numbers.

Ending CD Sync Recording

• The CD Sync recording will stop automatically when the playback source has finished playing. You may also stop a CD Sync recording manually by pressing the Stop button.

Finalizing CD Sync Recording

• As with all recorded CD-R/CD-RW discs, the disc must be finalized before it can be played in other machines. See page 22 for instructions on disc finalization.

Important Note

• The CDR 20 will not copy DVD discs, computer data discs, CD-based computer or video-game discs, or digital audio discs with a sample rate that is not compatible with the range of the CDR 20’s sample-rate converter.

Description

The Harman Kardon CD Recorder CDR-20 boasts a sleek and compact design that fits seamlessly into any home or office setting. Its intuitive interface makes it easy to navigate and operate, even for those who are not technically inclined. The device includes a remote control, allowing users to manage playback and recording from a distance. The built-in microphone is of high quality, capturing clear audio during live recordings. Additionally, the CDR-20 supports line-in input, enabling users to connect external devices such as mixers or other audio sources.

Setup Guide

To set up the Harman Kardon CD Recorder CDR-20, follow these steps:

1. Connect the power cord to a nearby outlet and turn on the device.
2. Insert a CD into the CD drive if you intend to play or record from it.
3. Use the remote control or front panel buttons to navigate through the menu and select your desired function (playback or recording).
4. If recording via line-in, connect your external device to the line-in input on the back of the CDR-20.
5. For live recordings, position the built-in microphone appropriately to capture clear audio.
6. Press the record button to start capturing your audio; the device will automatically create an MP3 file.

Troubleshooting

ERROR MESSAGE

Harman Kardon CD Recorder CDR-20 Pros & Cons

Pros

• Easy-to-use interface
• High-quality audio output
• Versatile recording options (CD, line-in, live recording)
• Compact design
• Affordable price point

Cons

• Limited storage capacity without external media
• No USB connectivity for direct computer transfer
• May require additional steps to transfer recorded files to a computer

Customer Reviews

Customers have generally praised the Harman Kardon CD Recorder CDR-20 for its simplicity and effectiveness in digitizing their music collections. Many have noted that the device is easy to set up and use, even for those who are not tech-savvy. However, some users have mentioned that transferring recorded files to a computer can be a bit cumbersome due to the lack of USB connectivity.

Common complaints include issues with compatibility with newer operating systems when transferring files via an intermediate device like an SD card reader.