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Sony MU-R201 Service Manual

Sony MU-R201
58 pages
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Table of Contents

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Sony MU-R201 Specifications

General IconGeneral
BrandSony
ModelMU-R201
CategoryRecording Equipment
LanguageEnglish

Summary

Specifications

Features

Impressive Stereo Ambience

Newly developed 2-channel audio processing LSI creates high-quality stereo effects.

Versatile Preset Characteristics

100 factory presets selected by professionals for various applications.

Creative Effect Shaping

EDIT and EQ functions allow modification of presets and user memory storage.

Wide Variety of Reverberation Types

10 basic modes with versatile effects like hall ambience and multi-gate reverb.

Direct Memory Selection

Simple and straightforward memory selection and adjustment for live performance.

Serves as Two Independent Reverberator Units

Two channels can operate separately, allowing use with different instruments.

Precise Sound Definition

Up to 26 parameters can be set to design exact sound fields and special effects.

4-band Equalizer Control

Programmable two-channel, four-band equalizer with adjustable parameters.

Remote Control Capability

Optional remote control unit and foot switch for convenient operation.

Flexible Input/Output Configuration

Dual input/output jacks accommodate standard phone or RCA plugs.

Easy Combination with Digital Instruments

Integrated MIDI interface for program change signals and effect level control.

Safety Check-Out (US Model)

Leakage Test

Procedure to check AC leakage from metal parts to earth ground and between parts.

Section 1 Outline

Location and Function of Parts and Controls

Details the function of front panel controls like power, input, dry, and effect level.

Section 1 Outline

Function Buttons

Explains the six functions activated by the function buttons (Memory, Edit, EQ, Write, MIDI).

Parameter Buttons

Describes the action of parameter buttons based on selected functions and color coding.

Bypass Switch and Indicator

Function of the bypass switch to toggle signal processing circuits on or off.

Rear Panel

Rear Panel Controls and Connectivity

Details all rear panel connectors including power, MIDI, remote, and I/O ports.

1-2. Connections

Notes on Connections

Important notes regarding making connections, including power off.

1-3. Activating a Preset Effect

Turn On the Unit

Step 1: Power on the MU-R201 and check indicator lights.

Press Preset Memory

Step 2: Activate the preset memory function.

Select First Digit of Preset Number

Step 3: Use +/- keys to select the first digit of the desired preset number.

Select Second Digit of Preset Number

Step 4: Use numeric keys to select the second digit of the preset number.

Adjust Level Controls

Step 5: Adjust input and effect/dry signal levels for desired sound.

1-4. Table of Preset Effects

Standard Patterns

Presets 00-09 for basic modes, 10-64 for recording/instrument use.

PA (SR) Use

Presets 65-74 for public-address applications and live events.

Special Effects

Presets 75-84 for radio shows/live performances and 85-99 for hall simulation.

1-5. The Concept of a Reverberator

What Is Reverberation?

Explains sound reflection, decay, and acoustic properties.

Three Elements of the Sound Field

Describes direct sound, early reflections, and reverberation components.

Reverberation with the MU-R201

How the MU-R201 achieves natural stereo reverberation using digital processing.

1-6. On Parameters

Edit Function Parameters

Details parameters like E. RFL. T., E. RFL. L., REV. T., PRE. DT, RT HIGH, SPREAD, PHASE, FBL, REPEAT, DEPTH, SPEED.

EQ Function Parameters

Parameters for the four-band equalizer (LOW, L MID, H MID, HIGH) and Effect Level (EFF. L.).

1-7. Operating Modes

Mode 0 (Hall)

Creates spacious reverberation for large halls or open-air settings.

Mode 1 (Room)

Creates reverberation of small locations like echo rooms or clubs.

Mode 2 (Plate)

Produces plate reverberation, common in studios for vocals and strings.

Mode 3 (Multi Gate Reverb)

Used for drum and percussion effects with gate circuit cutoff.

Mode 4 (Multi Reverse Reverb)

Special effect, gate reverb in reverse, suitable for cymbals.

Mode 5 (Dual Multi Delay)

Provides separate multi-delay in both channels, usable as two delay machines.

Mode 6 (Multi Auto-Pan)

Uses delay signal for feedback and auto-panning on the resulting signal.

Mode 7 (Dual Reverb)

Separate reverb in both channels, similar to plate reverb.

Mode 8 (Reverb & Gate)

Channel 1 has reverb (mode 7), channel 2 has gate reverb (mode 3).

Mode 9 (Reverb & Delay)

Channel 1 has reverb (mode 7), channel 2 has delay (mode 5).

1-8. Recalling Memory Settings (Memory Function)

Press Preset Memory or User Memory

Step 1: Select either Preset Memory or User Memory to recall effects.

Adjust First Digit of Memory Number

Step 2: Use +/- keys to adjust the first digit of the memory number.

Enter Second Digit of Memory Number

Step 3: Use numeric keys to enter the second digit of the memory number.

1-9. Editing Effects (Edit Function)

Select Memory Number to be Edited

Step 1: Select the memory number for the effect to be edited.

Press Edit

Step 2: Press the EDIT button to enter the editing mode.

Set Value with +/-

Step 4: Use +/- keys to change parameter values.

1-10. Changing Effects (EQ Function)

Changing Equalizer Settings

Adjust the two-channel, four-band equalizer settings.

Setting the Effect Level

Adjust the output level for the effect when the EFFECT control is at maximum.

Cascade Connection

Feature available in modes 8 and 9 for serial connection of effects.

1-11. Storing Data (Write Function)

Press Write

Step 1: Press the WRITE button to initiate data storage.

Select Memory Number

Step 2: Select the memory number using +/- and numeric keys.

Press Write Once More

Step 3: Press WRITE again to confirm and store the data.

1-12. Using MIDI Control (MIDI Function)

Checking and Altering Memory Number

How to check and change memory numbers corresponding to MIDI program numbers.

Selecting the MIDI Reception Channel

Setting the MU-R201's MIDI channel to match external MIDI equipment.

Controlling the Effect Level

Using control change signals to adjust effect levels.

1-13. Connection Examples

Connections for Recording

Example setup for connecting the MU-R201 for recording purposes.

Use as an Instrument Effecter

Mono/Stereo Input, Stereo Output Example

Example of using the unit as an effecter with mono/stereo input.

Independent Use of Two Channels

Example of using the two channels separately for different instruments.

Connections with an Audio System

Conventional Use

Setup for connecting to a standard audio system for conventional listening.

Use for Surround Sound

Example setup for creating a surround sound experience.

Use for Increased Sound Presence

To Achieve a Convincing Presence Effect

Guidelines for achieving a more present and realistic sound effect.

Loudspeaker Placement and Adjustment

Instructions for positioning and adjusting speakers for presence effect.

Imaging

Explains how speaker placement affects sound imaging and presence.

Choosing Reflected-Sound Speakers

Advice on selecting speakers that complement the main speakers for presence.

1-14. Preset Memory Data Chart

Memory Numbers 00-19

Descriptions for presets 00-19, covering standard patterns and recording use.

1-15. MIDI Implementation Chart

MIDI Data Format

Details the format for channel voice, channel mode, and system messages.

Channel Voice Message

Specifies format for program change, control change, note on/off messages.

Channel Mode Message

Specifies format for omni mode on/off messages.

System Exclusive Message

Details format for system exclusive messages like data transfer.

1-16. Block Diagram

Section 2 Electrical Adjustments

Offset Adjustment

Procedure to adjust the unit's offset voltage for stability.

Distortion Adjustment

Procedure to adjust the distortion rate to a minimum level.

Section 3 Diagrams

Mounting Diagram

Diagram showing the placement of components on the chassis.

Semiconductor Locations

Details the location of semiconductors on the mounting diagram.

Schematic Diagram - Audio Section

Technical schematic showing the audio signal path and circuitry.

Schematic Diagram - System Control Section

Technical schematic showing the system control and digital circuitry.

Section 4 Exploded Views and Parts List

Exploded Views and Parts List

Visual breakdown of parts for assembly and replacement.

Exploded Views and Parts List

Visual breakdown of parts for assembly and replacement (continued).

Section 5 Electrical Parts List

Semiconductor Lead Layouts

Diagrams showing the pin configurations of various semiconductors.

Accessory & Packing Material

List of included accessories and packing materials.

Troubleshooting

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