Marantz 2230 Owners Manual

The Marantz 2230 is a classic stereo receiver from the 1970s featuring 30 watts per channel RMS, built-in AM/FM tuner, phono input for turntables, tape monitor, loudness control, and distinctive blue dial lighting. Below are key sections for features, installation, operation, specifications, and maintenance.

Features at a Glance

Key components: Stereo amplifier, AM/FM tuner, front panel controls, wood cabinet, rear panel connections.

Installation

Unpack and inspect contents. Place on stable surface away from heat sources.

1. Connect speakers: Use speaker wire to connect left and right speakers to appropriate terminals.
2. Connect turntable: Use phono input for magnetic cartridge turntables.
3. Connect tape deck: Use tape 1 or tape 2 inputs/outputs.
4. Connect antenna: Attach FM dipole antenna and AM loop antenna.
5. Plug into AC power outlet.

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

First-Time Setup

Power on receiver; allow warm-up time for optimal performance.

1. Set input selector: Choose PHONO, TUNER, or AUX as needed.
2. Tune FM stations: Use tuning knob and meter for precise station selection.
3. Adjust tone controls: Set bass and treble to personal preference.
4. Set volume: Start at low volume and increase gradually.
5. Engage loudness: Use loudness switch for low volume listening enhancement.

CAUTION! Always turn volume to minimum before powering on or changing inputs.

Specifications

• Power Output: 30 watts per channel RMS at 8 ohms
• Total Harmonic Distortion: 0.3% or less
• Frequency Response: 20Hz - 20kHz ±1dB
• Input Sensitivity: Phono: 2.5mV, Aux: 250mV
• Signal-to-Noise Ratio: Phono: 70dB, Aux: 85dB
• Tuner Section: FM stereo, AM broadcast
• Dimensions: 17-1/4" W × 5-1/4" H × 14-1/2" D
• Weight: 22 lbs
• Power Requirements: 120V AC, 60Hz

Controls and Settings

Front Panel: Power switch, input selector, volume, balance, bass, treble, loudness, tuning, speaker selector.

Rear Panel: Speaker terminals, phono inputs, aux inputs, tape inputs/outputs, antenna terminals, AC power cord.

Input Selection: PHONO, AUX, TUNER, TAPE 1, TAPE 2. Tone Controls: Bass ±10dB at 100Hz, Treble ±10dB at 10kHz. Filter: High filter for noise reduction. Loudness: Compensates for Fletcher-Munson curves. Balance: Adjusts left/right channel balance.

Connecting Components

Speakers: Use 16-8 ohm speakers. Turntable: Connect to PHONO inputs. Tape Deck: Use TAPE inputs/outputs. Other Sources: Use AUX inputs for CD players, etc.

1. Turn off power before making connections.
2. Match cable colors (red/white for right/left channels).
3. Ensure secure connections to prevent hum and noise.
4. Use proper grounding for turntable.

Tip: Keep signal cables away from power cords to reduce hum.

Tuner Operation

AM/FM stereo reception with tuning meter.

1. Select TUNER input on front panel.
2. Adjust tuning knob until meter centers for strongest signal.
3. For FM stereo, ensure stereo indicator lights.
4. Use antenna positioning for best reception.
5. Preset stations can be marked on dial scale.

Note: FM stereo requires adequate signal strength for noise-free reception.

Phono Section

Designed for magnetic cartridge turntables.

1. Connect turntable to PHONO inputs.
2. Ensure proper grounding to reduce hum.
3. Set input selector to PHONO.
4. Adjust volume gradually from minimum.
5. Use tone controls to suit recording characteristics.

WARNING! Do not connect high-level sources to phono inputs as damage may occur.

Care & Maintenance

Unplug before cleaning. Use soft dry cloth for exterior. Clean controls with contact cleaner if noisy.

CAUTION! Do not use solvents or abrasives. Keep away from moisture and extreme temperatures.

Regulatory Information

FCC compliant for home use. Manufactured by Marantz Company, Inc. Serial number located on rear panel. For service, contact authorized Marantz service centers.

Troubleshooting

Service: Contact authorized Marantz service center for internal repairs.