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Ampeg Opto Comp - User Manual

Ampeg Opto Comp
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Owner’s Manual

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Summary

Introduction

Features

Highlights key features like smooth compression, versatile controls, true bypass, and durable construction.

Top Panel Features

Input Jack

Connects instrument signal via unbalanced 1/4" cable; note internal pad jumper and battery drain.

On;Off Footswitch

Activates/deactivates the Opto Comp pedal, which is true bypass when disengaged.

On;Off Indicator LED

Illuminates purple when the pedal is engaged, providing visual status.

Compression Control

Adjusts overall compression ratio from 1:1 to 10:1, balancing dynamics and adding punch.

Release Control

Sets the time it takes for the compressor to end gain reduction, from 75ms to 600ms.

Output Level Control

Controls overall output volume from mute to +14 dB; active only when pedal is engaged.

Gain Reduction LED

Indicates the amount of gain reduction by increasing brightness.

Output Jack

Connects to amplifier, mixer, or interface; signal level affected by volume control when active.

Rear and Bottom Panel Features

Power Connector

Connects external 9V DC power supply; use correct model to avoid damage.

Battery Power Option

Pedal can be powered by a 9V battery housed inside; unplug input when not in use.

Internal Pad Jumper Access

Bottom panel access allows adjustment of the -15 dB pad jumper for high-output instruments.

Pad Jumper Configuration

Suggested Settings

Block Diagram

Technical Specifications

Warranty and Support

Summary

Introduction

Features

Highlights key features like smooth compression, versatile controls, true bypass, and durable construction.

Top Panel Features

Input Jack

Connects instrument signal via unbalanced 1/4" cable; note internal pad jumper and battery drain.

On;Off Footswitch

Activates/deactivates the Opto Comp pedal, which is true bypass when disengaged.

On;Off Indicator LED

Illuminates purple when the pedal is engaged, providing visual status.

Compression Control

Adjusts overall compression ratio from 1:1 to 10:1, balancing dynamics and adding punch.

Release Control

Sets the time it takes for the compressor to end gain reduction, from 75ms to 600ms.

Output Level Control

Controls overall output volume from mute to +14 dB; active only when pedal is engaged.

Gain Reduction LED

Indicates the amount of gain reduction by increasing brightness.

Output Jack

Connects to amplifier, mixer, or interface; signal level affected by volume control when active.

Rear and Bottom Panel Features

Power Connector

Connects external 9V DC power supply; use correct model to avoid damage.

Battery Power Option

Pedal can be powered by a 9V battery housed inside; unplug input when not in use.

Internal Pad Jumper Access

Bottom panel access allows adjustment of the -15 dB pad jumper for high-output instruments.

Pad Jumper Configuration

Suggested Settings

Block Diagram

Technical Specifications

Warranty and Support

Ampeg Opto Comp Specifications

Power IconPower
internal power requirement9V Battery
external power requirement9V DC, ≥25 mA, center negative
Audio Specifications IconAudio Specifications
signal-to-noise ratio80 dB
maximum gain+14 dB
compression ratio minimum1:1
compression ratio maximum10:1
release time minimum75 milliseconds
release time maximum600 milliseconds
output level gainMute to +14 dB
Impedance IconImpedance
input impedance1 M @ NORMAL
input impedance with pad166 k w/–15 dB PAD
output impedance200
Weight and Dimensions IconWeight and Dimensions
size2.2 in x 2.6 in x 4.5 in, 56 mm x 66 mm x 114 mm
weight0.6 lb / 0.3 kg