Marantz SD 52 Manual

The Marantz SD 52 is a professional cassette deck featuring 3-head design, Dolby B/C noise reduction, manual bias adjustment, peak level meters, pitch control, auto-reverse playback, mic/line inputs, headphone output, and remote control capability. Designed for audiophile recording and playback with high-quality tape transport mechanism. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

Features at a Glance

Key components: 3-head tape transport system, Dolby noise reduction, manual bias control, peak level meters, pitch control, auto-reverse mechanism.

Feature	Description
3-head design	Separate record and playback heads for monitoring
Dolby B/C NR	Noise reduction for improved sound quality
Manual bias adjustment	Optimize recording for different tape types
Peak level meters	LED meters for accurate level monitoring
Pitch control	Adjust playback speed ±8%
Auto-reverse	Continuous playback without flipping tape
Mic/line inputs	Multiple input options for recording
Headphone output	For private listening
Remote control	Optional remote operation
Timer recording	Scheduled recording capability

Installation

Unpack and inspect contents. Place on stable, level surface.

1. Connect audio inputs: Use RCA cables for line inputs or XLR for balanced connections.
2. Connect audio outputs: Use RCA cables to amplifier or receiver.
3. Connect headphones: Use 1/4" jack for monitoring.
4. Plug into AC power using supplied power cord.
5. Connect optional remote control receiver.

WARNING! Ensure proper ventilation; do not block ventilation openings. Keep away from heat sources.

First-Time Setup

Power on deck; prepare for initial use.

1. Load cassette: Press EJECT, insert tape, close door.
2. Set tape type: Select appropriate position (Normal, CrO2, Metal).
3. Adjust bias: Use manual bias control for optimal recording.
4. Set recording levels: Adjust input levels using peak meters.
5. Configure Dolby NR: Select B or C noise reduction as needed.

CAUTION! Handle cassettes carefully; avoid touching tape surface.

Specifications

• Heads: 3-head system (erase, record, playback)
• Frequency Response: 20Hz-20kHz (±3dB)
• Signal-to-Noise: 72dB with Dolby C
• Wow & Flutter: 0.05% WRMS
• Inputs: Line, Mic, Remote
• Outputs: Line, Headphone
• Power Supply: 120V/230V AC, 50/60Hz
• Dimensions: 430mm W × 125mm H × 315mm D
• Weight: 7.5kg

Controls and Settings

Front panel: POWER, EJECT, PLAY, STOP, REC, FF, REW, PAUSE, DOLBY NR, TAPE SELECT, BIAS, PITCH.

Recording controls: INPUT SELECT, REC LEVEL, METER SELECT, TIMER.

Input selection: LINE, MIC. Tape type: NORMAL, CrO2, METAL. Dolby NR: OFF, B, C. Meter display: PEAK, VU. Pitch control: ±8% adjustment.

Connecting Devices

Audio sources: CD player, turntable, mixer. Audio destinations: Amplifier, receiver, headphones.

1. Turn off all equipment before connecting.
2. Use quality shielded cables for audio connections.
3. Connect line outputs to amplifier inputs.
4. Connect source devices to line inputs.
5. For microphone use, connect to MIC inputs.

Tip: Use balanced connections when possible for reduced noise.

Recording and Playback

Professional recording and playback operations.

1. Recording: Select input source, set levels, press REC + PLAY.
2. Playback: Insert tape, press PLAY.
3. Monitoring: Use tape/source switch for record monitoring.
4. Auto-reverse: Automatically plays reverse side when enabled.
5. Pitch control: Adjust speed for musical key matching.
6. Timer recording: Set start/stop times for unattended recording.
7. Dubbing: Copy tapes using two decks.

WARNING! Do not leave tapes in deck when not in use. Store in cool, dry place.

Maintenance Features

Head cleaning: Regular maintenance required. Demagnetization: Use head demagnetizer periodically. Azimuth adjustment: Professional service recommended.

Care & Cleaning

Unplug before cleaning. Clean heads, capstan, pinch roller with isopropyl alcohol and cotton swabs.

CAUTION! Use only approved cleaning solutions. Never use abrasive materials on heads.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits. Copyright © Marantz. For support, contact authorized Marantz service centers. Manufactured under license from Dolby Laboratories.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No sound during playback	Dirty heads/connections	Clean heads; check audio connections; verify output selection.
Poor recording quality	Incorrect bias/levels	Adjust bias for tape type; set proper recording levels.
Tape eating/squealing	Dirty transport	Clean capstan/pinch roller; check tape condition.
Auto-reverse not working	Sensor/mechanism	Clean tape presence sensors; check mechanism.
Speed variations	Belt wear	Replace drive belts; professional service recommended.

Service: Contact authorized Marantz service center for repairs.

Support: Refer to manufacturer's website for technical support.