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Grundig TK 747 - User Manual

Grundig TK 747
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Summary

Operating Controls

Stereo Earphone Socket

Socket for stereo headphones, controls speaker operation.

Volume Controls

Adjusts volume for built-in output stages; left/right channel balance.

Tone Control

Adjusts tone, with positions for normal, treble, and bass.

Tape Speed Selector

Selects tape speed; must be operated when the unit is off.

Recording Pilot Lamp

Illuminates when the recording key is pressed.

Mains Switch

Used to switch the unit on and off.

Level Meter

Illuminated when unit is on; used for recording/playback level control.

Tape Position Indicator

Counter with reset button for locating recordings.

Multiplay, Echo, and Phono 2 Level Control

Adjusts level for special effects and mixing.

Recording Level Control

Manually adjusts recording level for mic, radio, phono inputs.

STOP Button

Releases record, start, pause, and fast wind buttons.

Fast Wind Buttons

Buttons for fast forward and rewind of tape.

PAUSE Button

Provides brief interruptions during recording or playback.

Start Button

Starts tape movement for recording or playback.

Recording Button

Initiates recording, used with Start for auto-level adjustment.

Record Mode Selector

Selects automatic or manual recording modes.

Track Selector

Selects mono 1, mono 2, duo, or stereo tracks.

Control Functions

Monitoring;Via Tape Monitoring Selector

Selects monitoring mode for mono and stereo recordings.

Input Selector

Selects input source like radio, phono, or microphone.

Microphone Socket

Connection for dynamic or condenser microphones.

General Information

Mains Connection and Connecting Sockets

Location of power voltage selector, sockets for mains and accessories.

Device Placement and Handling

Guidelines for placing the unit on furniture and handling the lid.

Connecting Accessories and Devices

Radio Connection

Connects to radio for recording and playback.

Phono 1 Connection

Connects record player or second tape recorder.

Phono 2 Connection

Connects record player or second tape recorder; for mixing.

Remote Control Connection

Connects footswitch for remote start/stop operation.

DIA SLIDE Connection

Connects synchronizing device for slide/film projectors.

Audio Connections

Loudspeaker Sockets

Connects external loudspeakers; disconnects internal ones.

Earphone Socket

Connects stereo headphones; allows speaker on/off control.

Microphone Socket

Connects dynamic or condenser microphones for recording.

Tape Handling and Operation

Fitting the Tape

Instructions for loading tape reels onto the spool holders.

Tape Position Indicator

Counter with reset button for locating recordings.

Tape Speed

Selects tape speed (19, 9.5, 4.75 cm/sec) when unit is off.

Switching the Device On and Off

Uses the mains switch; control lamp indicates power status.

Recording Operations

Preparing to Record

Ensures correct connections, tape, and source for recording.

Recording

Starts tape movement and recording process.

Monitoring

Listening to the recording as it is made, with precautions for acoustic feedback.

Playback and Recording Control

Monitoring via Tape

Listens to recorded sound a fraction of a second after it is made.

Pause Function

Temporarily interrupts tape movement during recording or playback.

Stop Function

Stops all machine functions and resets commands.

Rewind and Fast Wind

Moves tape quickly forward or backward.

Automatic Tape End Stop

Stops tape automatically when metallic foils are detected.

Reproducing Mono and Stereo Recordings

Playback via Radio or HiFi Amplifier

Replays tape through external audio systems.

Playback via Internal Amplifiers

Replays tape using the unit's built-in speakers.

Technical Details of Operation

Mono and Stereo Operation

Explains how to record/playback on mono (1/4 track) and stereo (2-track) tapes.

Tape Management

DUO Operation

Reproduces two tracks simultaneously as a composite mono signal.

Exchanging Tapes

Guidelines for sharing tapes between 2-track and 4-track machines.

Erasing Tapes

Process for erasing recordings from tapes.

Manual Operation

Manual Recording

Allows manual adjustment of recording levels without automatic control.

Remote Control Operation

Starts and stops tape remotely using a footswitch or microphone.

Advanced Recording Techniques

Mixing Two Inputs

Combines two different audio sources for recording manually.

Special Effects Recordings

Techniques for creating sound effects like echoes.

Synchro Recording and Playback

Synchro Recording Process

Records a second sound source synchronously with an existing recording.

Multiplayback Recording

Multiplayback Recording Process

Mixes previous recordings with new ones on separate tracks.

Tape Care and Maintenance

Tape Treatment and Joining

Proper handling, cleaning, and splicing of magnetic tapes.

Tape Recorder Maintenance

General Maintenance

Cleaning heads, pressure tape, and roller from dust and particles.

Mains Voltage Adjustment

Adjusting the unit to operate on different mains voltages.

Operating Frequency Adjustment

Modifying the unit for 60 Hz mains frequency.

Technical Data

Power Supply and Fuses

Electrical specifications including voltages, current, and fuse ratings.

Tape Speeds and Frequency Range

Specifies tape speeds and the unit's frequency response.

Signal;Noise Ratio and Wow;Flutter

Measures audio quality performance metrics.

Inputs and Outputs

Lists available input and output connection specifications.

Tape Accessories

Microphones and Accessories

Details various microphones and related accessories like windscreens.

Headphones and Earphones

Lists stereo headphones, earphones, and stethoclip for monitoring.

Connection Cables and Adapters

Includes extension cords, connecting leads, and adapters.

Special Accessories (Mixer, Projector Control)

Lists stereo mixer, projector control units, and TV adapter.

Maintenance Items (Cleaning Tape)

Specifies cleaning tape for head maintenance.

Tapes

Recommends specific GRUNDIG HiFi tapes for use with the recorder.

Summary

Operating Controls

Stereo Earphone Socket

Socket for stereo headphones, controls speaker operation.

Volume Controls

Adjusts volume for built-in output stages; left/right channel balance.

Tone Control

Adjusts tone, with positions for normal, treble, and bass.

Tape Speed Selector

Selects tape speed; must be operated when the unit is off.

Recording Pilot Lamp

Illuminates when the recording key is pressed.

Mains Switch

Used to switch the unit on and off.

Level Meter

Illuminated when unit is on; used for recording/playback level control.

Tape Position Indicator

Counter with reset button for locating recordings.

Multiplay, Echo, and Phono 2 Level Control

Adjusts level for special effects and mixing.

Recording Level Control

Manually adjusts recording level for mic, radio, phono inputs.

STOP Button

Releases record, start, pause, and fast wind buttons.

Fast Wind Buttons

Buttons for fast forward and rewind of tape.

PAUSE Button

Provides brief interruptions during recording or playback.

Start Button

Starts tape movement for recording or playback.

Recording Button

Initiates recording, used with Start for auto-level adjustment.

Record Mode Selector

Selects automatic or manual recording modes.

Track Selector

Selects mono 1, mono 2, duo, or stereo tracks.

Control Functions

Monitoring;Via Tape Monitoring Selector

Selects monitoring mode for mono and stereo recordings.

Input Selector

Selects input source like radio, phono, or microphone.

Microphone Socket

Connection for dynamic or condenser microphones.

General Information

Mains Connection and Connecting Sockets

Location of power voltage selector, sockets for mains and accessories.

Device Placement and Handling

Guidelines for placing the unit on furniture and handling the lid.

Connecting Accessories and Devices

Radio Connection

Connects to radio for recording and playback.

Phono 1 Connection

Connects record player or second tape recorder.

Phono 2 Connection

Connects record player or second tape recorder; for mixing.

Remote Control Connection

Connects footswitch for remote start/stop operation.

DIA SLIDE Connection

Connects synchronizing device for slide/film projectors.

Audio Connections

Loudspeaker Sockets

Connects external loudspeakers; disconnects internal ones.

Earphone Socket

Connects stereo headphones; allows speaker on/off control.

Microphone Socket

Connects dynamic or condenser microphones for recording.

Tape Handling and Operation

Fitting the Tape

Instructions for loading tape reels onto the spool holders.

Tape Position Indicator

Counter with reset button for locating recordings.

Tape Speed

Selects tape speed (19, 9.5, 4.75 cm/sec) when unit is off.

Switching the Device On and Off

Uses the mains switch; control lamp indicates power status.

Recording Operations

Preparing to Record

Ensures correct connections, tape, and source for recording.

Recording

Starts tape movement and recording process.

Monitoring

Listening to the recording as it is made, with precautions for acoustic feedback.

Playback and Recording Control

Monitoring via Tape

Listens to recorded sound a fraction of a second after it is made.

Pause Function

Temporarily interrupts tape movement during recording or playback.

Stop Function

Stops all machine functions and resets commands.

Rewind and Fast Wind

Moves tape quickly forward or backward.

Automatic Tape End Stop

Stops tape automatically when metallic foils are detected.

Reproducing Mono and Stereo Recordings

Playback via Radio or HiFi Amplifier

Replays tape through external audio systems.

Playback via Internal Amplifiers

Replays tape using the unit's built-in speakers.

Technical Details of Operation

Mono and Stereo Operation

Explains how to record/playback on mono (1/4 track) and stereo (2-track) tapes.

Tape Management

DUO Operation

Reproduces two tracks simultaneously as a composite mono signal.

Exchanging Tapes

Guidelines for sharing tapes between 2-track and 4-track machines.

Erasing Tapes

Process for erasing recordings from tapes.

Manual Operation

Manual Recording

Allows manual adjustment of recording levels without automatic control.

Remote Control Operation

Starts and stops tape remotely using a footswitch or microphone.

Advanced Recording Techniques

Mixing Two Inputs

Combines two different audio sources for recording manually.

Special Effects Recordings

Techniques for creating sound effects like echoes.

Synchro Recording and Playback

Synchro Recording Process

Records a second sound source synchronously with an existing recording.

Multiplayback Recording

Multiplayback Recording Process

Mixes previous recordings with new ones on separate tracks.

Tape Care and Maintenance

Tape Treatment and Joining

Proper handling, cleaning, and splicing of magnetic tapes.

Tape Recorder Maintenance

General Maintenance

Cleaning heads, pressure tape, and roller from dust and particles.

Mains Voltage Adjustment

Adjusting the unit to operate on different mains voltages.

Operating Frequency Adjustment

Modifying the unit for 60 Hz mains frequency.

Technical Data

Power Supply and Fuses

Electrical specifications including voltages, current, and fuse ratings.

Tape Speeds and Frequency Range

Specifies tape speeds and the unit's frequency response.

Signal;Noise Ratio and Wow;Flutter

Measures audio quality performance metrics.

Inputs and Outputs

Lists available input and output connection specifications.

Tape Accessories

Microphones and Accessories

Details various microphones and related accessories like windscreens.

Headphones and Earphones

Lists stereo headphones, earphones, and stethoclip for monitoring.

Connection Cables and Adapters

Includes extension cords, connecting leads, and adapters.

Special Accessories (Mixer, Projector Control)

Lists stereo mixer, projector control units, and TV adapter.

Maintenance Items (Cleaning Tape)

Specifies cleaning tape for head maintenance.

Tapes

Recommends specific GRUNDIG HiFi tapes for use with the recorder.

Grundig TK 747 Specifications

General IconGeneral
Tape Speed9.5 cm/s
Reel Size18 cm
Dimensions480 x 190 x 360 mm / 18.9 x 7.5 x 14.2 inch
Weight15 kg
Track System2-track
Motor1 motor
InputsMicrophone
OutputsRadio

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