Marantz Equalizer Manual

The Marantz Equalizer is a professional audio processing device designed for precise sound adjustment and enhancement. Featuring multiple frequency bands, adjustable sliders, spectrum analyzer display, input/output level controls, bypass function, and various audio processing modes. Compatible with home audio systems, professional studios, and live sound applications. Below are key sections for features, installation, operation, settings, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Devices 7. Audio Processing Modes 8. Advanced Features 9. Care & Maintenance 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Frequency band sliders, Spectrum analyzer display, Input/Output level controls, Bypass switch, Power indicator, Audio input/output connectors.

Feature	Description
Frequency Bands	10-band or 31-band equalization with adjustable sliders
Spectrum Analyzer	Real-time frequency response display
Input Level Control	Adjusts input signal strength
Output Level Control	Controls output signal volume
Bypass Switch	Bypasses equalizer for direct signal path
Power Connector	For AC power connection
Audio Inputs	RCA or XLR connectors for audio sources
Audio Outputs	RCA or XLR connectors for amplified output
EQ Memory	Stores multiple equalizer presets
LED Indicators	Shows signal levels and power status

Installation

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

Connect audio sources: Use input connectors for audio source devices.
Connect to amplifier: Use output connectors to amplifier or receiver.
Connect power: Plug into AC power outlet.
Ground connection: Ensure proper grounding for noise reduction.

WARNING! Ensure proper ventilation; do not block cooling vents. Use appropriate cables for connections.

First-Time Setup

Power on equalizer; follow initial setup procedure.

Set input levels: Adjust input control until LED indicators show optimal level.
Reset to flat: Set all frequency sliders to center position.
Calibrate output: Adjust output level to match system requirements.
Test bypass function: Ensure bypass switch works properly.

CAUTION! Keep away from moisture and extreme temperatures. Use stable power source.

Specifications

Frequency Response: 20Hz - 20kHz ±1dB
Equalizer Bands: 10 or 31 adjustable bands
Signal-to-Noise Ratio: >90dB
Total Harmonic Distortion: <0.01%
Input/Output Connectors: RCA, XLR, or combination jacks
Power Requirements: 120V AC, 60Hz or 230V AC, 50Hz
Display: LED spectrum analyzer or VU meters
Dimensions: Standard rack mount or tabletop
Weight: Varies by model

Controls and Settings

Front Panel: Power switch, Frequency sliders, Input/Output level controls, Bypass switch, Spectrum analyzer.

Rear Panel: Audio input/output connectors, Power connector, Ground terminal.

Frequency Adjustment: Individual sliders for each frequency band (typically 31.5Hz, 63Hz, 125Hz, 250Hz, 500Hz, 1kHz, 2kHz, 4kHz, 8kHz, 16kHz). Level Controls: Input gain, Output level. Display: Spectrum analyzer shows real-time frequency response. Memory: Store and recall equalizer presets.

Connecting Devices

Audio Sources: CD players, turntables, media players. Output: Amplifiers, receivers, powered speakers.

Turn off all devices before connecting.
Connect audio source to equalizer inputs.
Connect equalizer outputs to amplifier inputs.
Ensure proper cable types (balanced/unbalanced as required).

Tip: Use high-quality cables to maintain signal integrity and reduce noise.

Audio Processing Modes

Supports various equalization curves and presets.

Flat Response: All sliders at center position for neutral sound.
Custom Curves: Adjust individual frequency bands as needed.
Preset Modes: Rock, Jazz, Classical, Speech, User-defined.
Real-time Analysis: Use spectrum analyzer to visualize frequency response.
Subtractive EQ: Cut frequencies rather than boost for cleaner sound.
High-pass/Low-pass: Available on some models for frequency filtering.

WARNING! Avoid extreme boost settings to prevent distortion and equipment damage.

Advanced Features

Parametric EQ: Adjustable Q factor and center frequency on premium models. Memory Presets: Store multiple equalizer settings. Bypass Comparison: Instantly compare equalized vs. direct sound. RTA Mode: Real-time analysis for room correction.

Care & Maintenance

Unplug before cleaning. Use soft, dry cloth for exterior; compressed air for sliders and connectors.

CAUTION! Do not use liquids or abrasive cleaners. Keep sliders free from dust and debris.

Regulatory Information

FCC Part 15: Class A digital device; complies with electromagnetic interference standards. CE certified for European markets. Copyright © 2025 Marantz; trademarks of Sound United LLC. For technical support, visit www.marantz.com or contact 1-800-288-2284.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No sound output	Connections/power	Check all cable connections; ensure power is on; verify bypass switch position.
Distorted sound	Level settings	Reduce input/output levels; check for clipping indicators.
Hum or noise	Grounding/cables	Check ground connections; use balanced cables; isolate from interference sources.
Sliders not responding	Dirt/mechanical issue	Clean sliders with contact cleaner; check for physical damage.
Display not working	Power/backlight	Check power supply; replace display backlight if applicable.

Reset: Power cycle unit or use factory reset procedure if available.

Service: 1-800-288-2284; www.marantz.com