Marantz 4220 Manual

The Marantz 4220 is a classic stereo receiver featuring 20 watts per channel, AM/FM tuner, phono input, tape monitor, loudness control, and multiple audio inputs. This quadraphonic receiver offers 4-channel sound capability, tone controls, speaker selector, and headphone output. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

Features at a Glance

Key components: Front panel controls, rear input/output terminals, tuning dial, volume/power knob, speaker selector.

Installation

Unpack and inspect contents. Place on stable, well-ventilated surface.

1. Connect speakers: Use speaker wire to connect to A/B speaker terminals.
2. Connect antenna: Attach FM antenna to 75-ohm terminal; AM loop antenna to AM terminals.
3. Connect audio sources: Turntable to Phono input; other devices to Aux or Tape inputs.
4. Plug into AC power outlet.

WARNING! Ensure proper ventilation; do not block ventilation openings. Use correct speaker impedance.

First-Time Setup

Power on receiver; set initial controls to neutral positions.

1. Set tone controls: Turn Bass and Treble to 12 o'clock position.
2. Set volume: Turn Volume to minimum before power on.
3. Tune FM station: Rotate tuning dial to find stations; adjust antenna for best reception.
4. Select input: Choose Phono, Aux, or Tape as needed.
5. Adjust balance: Set Balance control to center position.

CAUTION! Always turn volume down before switching inputs or powering off.

Specifications

• Power Output: 20 watts RMS per channel (8 ohms)
• Frequency Response: 20Hz - 20kHz
• Total Harmonic Distortion: Less than 0.5%
• Input Sensitivity: Phono: 2.5mV, Aux: 150mV
• Signal-to-Noise Ratio: Phono: 65dB, Aux: 80dB
• Tuner Section: FM stereo, AM
• Controls: Volume, Balance, Bass, Treble, Loudness, Input Selector
• Power Requirements: 120V AC, 60Hz, 70 watts
• Dimensions: 17" W × 5" H × 12" D
• Weight: 15 lbs

Controls and Settings

Front panel controls: Power/Volume, Input Selector, Tuning, Balance, Bass, Treble, Loudness, Speaker Selector.

Input Selection: Phono, Aux, Tape 1, Tape 2, FM, AM

Tone Controls: Bass (±10dB at 100Hz), Treble (±10dB at 10kHz). Loudness: Compensates for low-volume listening. Balance: Adjusts left/right channel balance. Speaker Selector: A, B, A+B, or off.

Connecting Devices

Speaker connections: A/B terminals. Audio inputs: Phono, Aux, Tape. Antenna: FM 75-ohm, AM loop.

1. Turn off receiver before connecting devices.
2. Connect turntable to Phono input (ground wire to ground terminal).
3. Connect CD player, tuner, or other sources to Aux input.
4. Connect tape deck to Tape inputs/outputs.
5. Connect headphones to front panel jack.

Tip: Use high-quality cables and ensure proper grounding for phono connections.

Operation Guide

Basic operation procedures for different listening modes.

1. Power on: Rotate Volume/Power knob clockwise.
2. Select input: Turn Input Selector to desired source.
3. Adjust volume: Rotate Volume knob to desired level.
4. Tune radio: Use Tuning dial for FM/AM stations; stereo light indicates FM stereo reception.
5. Use tone controls: Adjust Bass and Treble to preference.
6. Tape monitoring: Use Tape Monitor switch for recording/playback.
7. Speaker selection: Choose A, B, or both speaker sets.
8. Headphone use: Plug headphones into front jack; speakers mute automatically.

WARNING! Do not operate at maximum volume for extended periods to avoid damage.

Maintenance

Keep unit clean and dust-free. Use dry cloth for cleaning; avoid liquids.

Periodically clean controls with contact cleaner if scratchy operation occurs.

CAUTION! Unplug unit before cleaning. Do not use abrasive cleaners.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits. Manufactured to Marantz quality standards. For service, contact authorized Marantz service centers. This product may be covered by warranty - check with retailer.

Troubleshooting

Service: Contact authorized Marantz service center for internal repairs.