Marantz AM FM Stereo Receiver Model 2265B Manual

The Marantz Model 2265B is a classic 65-watt stereo receiver featuring AM/FM tuner, phono inputs for turntables, tape monitor circuits, loudness control, tone controls, headphone jack, and speaker selector. Known for its warm sound quality and iconic blue dial display, this vintage audio component requires proper setup and maintenance for optimal performance. Below are key sections for features, installation, operation, specifications, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Components 7. Tuner Operation 8. Maintenance 9. Regulatory Information 10. Troubleshooting

Features at a Glance

Key components: AM/FM stereo tuner, phono inputs, tape monitor, tone controls, speaker outputs, headphone jack.

Feature	Description
Power Output	65 watts per channel into 8 ohms
Tuner Section	AM/FM stereo with tuning meter
Phono Inputs	MM cartridge compatible
Tape Monitor	Dual tape monitor circuits
Tone Controls	Bass and treble adjustment
Loudness Control	Compensates for low volume listening
Speaker Selector	A/B speaker outputs
Headphone Jack	Front panel 1/4" stereo jack
Input Selector	Phono, Aux, Tuner, Tape
Power Switch	Main power on/off

Installation

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

Connect speakers: Use speaker wire to connect to A/B speaker terminals.
Connect turntable: Use phono inputs for magnetic cartridge turntables.
Connect other sources: Use Aux inputs for CD players, tape decks, etc.
Connect antenna: FM antenna to 75 ohm terminal, AM antenna to AM terminals.
Plug into AC power outlet.

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

First-Time Setup

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

Set input selector: Rotate to desired source (Phono, Aux, Tuner).
Adjust volume: Start at minimum volume and increase gradually.
Tune FM stations: Use tuning dial and meter for best reception.
Set tone controls: Adjust bass and treble to preference.
Speaker selection: Choose A/B speakers as needed.

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

Specifications

Power Output: 65 watts per channel (8 ohms, 20Hz-20kHz)
Total Harmonic Distortion: 0.15% at rated power
Frequency Response: 10Hz-50kHz (+0, -3dB)
Input Sensitivity: Phono: 2.5mV, Aux: 150mV
Signal-to-Noise Ratio: Phono: 75dB, Aux: 90dB
Tuner Section: FM sensitivity 1.9uV, AM sensitivity 50uV
Power Requirements: 120V AC, 60Hz, 280 watts
Dimensions: 17-3/4" W x 5-3/4" H x 14-1/2" D
Weight: 28 lbs

Controls and Settings

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

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

Tone Controls: Bass ±10dB at 50Hz, Treble ±10dB at 15kHz. Loudness: Compensates for Fletcher-Munson curves. Balance: Adjusts left/right channel balance. Input Selector: Phono, Aux, Tuner, Tape 1, Tape 2. Speaker Selectors: A/B speakers independent or simultaneous.

Connecting Components

Phono: For turntables with magnetic cartridges. Aux: For CD players, streaming devices. Tape: For recording and playback decks.

Turn off receiver before connecting components.
Match cable colors (red/white for right/left channels).
Ensure secure connections to prevent hum and noise.
Use proper grounding for turntable if applicable.

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

Tuner Operation

AM/FM stereo reception with tuning meter and signal strength indicator.

Select Tuner input on front panel.
Rotate tuning dial slowly for station selection.
Watch tuning meter for center tuning indication.
FM stereo light indicates stereo broadcast reception.
Use mono switch for weak FM stations to reduce noise.
Adjust antenna for best reception quality.

WARNING! Do not force tuning dial; turn gently for precise tuning.

Maintenance

Regular cleaning of controls and proper ventilation essential for longevity.

Clean controls: Use contact cleaner for scratchy pots and switches. Ventilation: Ensure adequate airflow around unit. Bulb replacement: Consult service manual for dial light replacement.

CAUTION! Unplug unit before cleaning. Do not use liquids on electrical components.

Regulatory Information

FCC compliant for home use. Manufactured to meet industry standards for audio equipment. Copyright © 1970s Marantz. For vintage audio support, consult specialized audio repair technicians. Original manufacturer support may be limited due to product age.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No sound from speakers	Speaker selector/connections	Check speaker selector position; verify speaker connections; check fuse.
Hum or noise	Grounding/cables	Check component grounding; ensure cables properly seated; separate signal/power cables.
Scratchy controls	Dirty potentiometers	Use contact cleaner on volume/tone controls; rotate controls fully multiple times.
Weak FM reception	Antenna/alignment	Adjust FM antenna; check antenna connections; may require professional alignment.
One channel silent	Balance/connections	Check balance control; verify RCA cables; test with different source.

Service: Consult qualified vintage audio technician for repairs. Original schematics available from Marantz archives.