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Avalon VT-737SP - User Manual

Avalon VT-737SP
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VT-737SP
Pure Class A Mono Vacuum Tube / Discrete
Preamplifier, Opto-compressor & Equalizer
Operation Manual
© 2016 Avalon Industries Incorporated. Release 2.0
D ESIGNAVA LON
P URE
C LASS
A MUSIC
R ECORDING
S YSTEMS
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Summary

Introduction to the VT-737 sp

Overview of the VT-737 sp Unit

Describes the unit's combined functions and signal path, including bypass capabilities.

Key Features of the VT-737 sp

Lists the technical capabilities and components of the VT-737sp, such as Class A operation and opto-compressor.

Unpacking and Initial Inspection

Guides on checking package contents and performing an initial inspection of the unit.

Quick Start-up Guide

VT-737 sp Set-up Procedure

Step-by-step instructions for connecting and configuring the VT-737sp for initial use.

Operational Tips for VT-737 sp

Provides useful advice on using key controls and functions like gain, output, and compression.

Using the VT-737 sp Features Tutorial

A practical walkthrough of operating the main functions of the VT-737sp.

Safety and Grounding Guidelines

Essential Safety Instructions

Critical warnings about electrical hazards and safe operation of the unit.

Proper Grounding Instructions

Emphasizes the importance of correct grounding for electrical safety.

AC Voltage Selection Process

Details how to set the correct AC voltage for different regions.

Rack Mounting and Cooling Best Practices

Guidance on installing the unit in a rack and ensuring proper ventilation.

VT-737 sp Turn-on Procedure

Explains the soft-start feature and recommended warm-up time for optimal performance.

Operation and Controls of VT-737 sp

Preamplifier Controls

Details controls for input gain, selection, high gain, and phase settings.

Compressor Controls

Explains threshold, ratio, attack, release, and compressor engagement.

Equalizer & Filter Controls

Describes EQ bands, frequencies, filters, and side-chain functions.

Output, Metering & Utility

Covers output level, AC power, and meter calibration.

Applications of the VT-737 sp

Typical Setups for VT-737 sp

Describes various ways to set up the VT-737sp for recording, mixdown, and mastering.

VT-737 sp Application Settings

Provides example settings for specific audio applications.

VT-737 sp Settings for Vocals

Example settings for processing vocals.

VT-737 sp Settings for Vocals with De-ess

Example settings for vocals focusing on de-essing.

VT-737 sp Settings for Bass Guitar

Example settings for processing bass guitar.

VT-737 sp Settings for Acoustic Guitar

Example settings for processing acoustic guitar.

VT-737 sp Settings for Electric Guitar

Example settings for processing electric guitar.

VT-737 sp Settings for Acoustic Piano

Example settings for processing acoustic piano.

VT-737 sp Settings for Snare Drum

Example settings for processing snare drum.

VT-737 sp Settings for Kick Drum

Example settings for processing kick drum.

VT-737 sp Settings for Drum Overheads;Cymbals

Example settings for processing drum overheads/cymbals.

Understanding Audio Basics

Understanding Impedance in Audio

Explains impedance of inputs and outputs and its effect on signal flow.

Balanced vs. Unbalanced Connections

Discusses balanced and unbalanced connections and their advantages in audio.

Cables and Connectors Importance

Discusses the importance and quality of cables and connectors for signal integrity.

Microphone Types Overview

Provides a basic overview of dynamic, condenser, and ribbon microphones.

Function of Preamplifiers

Explains the function and types of preamplifiers used in audio systems.

How Audio Compression Works

Explains how a compressor works, its parameters, and dynamic range control.

Understanding Equalization

Explains what an equalizer is, its bands, and frequency adjustments.

Equalization Tips for Instruments

Lists recommended frequency ranges for various instruments during equalization.

Frequently Asked Questions (FAQs)

Common Operational Questions

Addresses questions on gain limits, tube types, international use, and powering down.

VT-737 sp Product Comparisons

Compares VT-737sp's preamp, compressor, and EQ to other Avalon models.

Trouble Shooting Common Issues

Resolving Power and Sound Issues

Addresses problems like no power, no sound, dim lights, and noise.

Troubleshooting Distortion and Overload

Solutions for distorted sound, hum, buzzing, and overloading recording devices.

Identifying Tube Related Symptoms

Identifies symptoms that may indicate failing vacuum tubes.

Service, Warranty, and Support

Service and Contact Information

Provides contact details for Avalon Design and service inquiries.

Product Warranty Terms

Details the product warranty, coverage, and conditions.

Return Procedure for Repairs

Explains the process for returning the unit for repair or exchange.

Safety Standards Conformance

Lists safety standards the product conforms to.

Technical Information and Specifications

VT-737 sp Detailed Specifications

Lists the technical specifications including circuit topology, gain ranges, and I/O levels.

Compressor and Equalizer Specifications

Details specifications for the compressor, equalizer, filters, and AC power.

VT-737 sp Recall Sheet

Provides a sheet for recording and recalling settings for the VT-737sp.

VT-737 sp Block Diagram

Illustrates the signal flow and internal circuitry of the VT-737sp.

VT-737 vs VT-737 sp Comparison

Compares the original VT-737 with the VT-737sp, highlighting key differences.

Appendix A - Glossary of Terms

Summary

Introduction to the VT-737 sp

Overview of the VT-737 sp Unit

Describes the unit's combined functions and signal path, including bypass capabilities.

Key Features of the VT-737 sp

Lists the technical capabilities and components of the VT-737sp, such as Class A operation and opto-compressor.

Unpacking and Initial Inspection

Guides on checking package contents and performing an initial inspection of the unit.

Quick Start-up Guide

VT-737 sp Set-up Procedure

Step-by-step instructions for connecting and configuring the VT-737sp for initial use.

Operational Tips for VT-737 sp

Provides useful advice on using key controls and functions like gain, output, and compression.

Using the VT-737 sp Features Tutorial

A practical walkthrough of operating the main functions of the VT-737sp.

Safety and Grounding Guidelines

Essential Safety Instructions

Critical warnings about electrical hazards and safe operation of the unit.

Proper Grounding Instructions

Emphasizes the importance of correct grounding for electrical safety.

AC Voltage Selection Process

Details how to set the correct AC voltage for different regions.

Rack Mounting and Cooling Best Practices

Guidance on installing the unit in a rack and ensuring proper ventilation.

VT-737 sp Turn-on Procedure

Explains the soft-start feature and recommended warm-up time for optimal performance.

Operation and Controls of VT-737 sp

Preamplifier Controls

Details controls for input gain, selection, high gain, and phase settings.

Compressor Controls

Explains threshold, ratio, attack, release, and compressor engagement.

Equalizer & Filter Controls

Describes EQ bands, frequencies, filters, and side-chain functions.

Output, Metering & Utility

Covers output level, AC power, and meter calibration.

Applications of the VT-737 sp

Typical Setups for VT-737 sp

Describes various ways to set up the VT-737sp for recording, mixdown, and mastering.

VT-737 sp Application Settings

Provides example settings for specific audio applications.

VT-737 sp Settings for Vocals

Example settings for processing vocals.

VT-737 sp Settings for Vocals with De-ess

Example settings for vocals focusing on de-essing.

VT-737 sp Settings for Bass Guitar

Example settings for processing bass guitar.

VT-737 sp Settings for Acoustic Guitar

Example settings for processing acoustic guitar.

VT-737 sp Settings for Electric Guitar

Example settings for processing electric guitar.

VT-737 sp Settings for Acoustic Piano

Example settings for processing acoustic piano.

VT-737 sp Settings for Snare Drum

Example settings for processing snare drum.

VT-737 sp Settings for Kick Drum

Example settings for processing kick drum.

VT-737 sp Settings for Drum Overheads;Cymbals

Example settings for processing drum overheads/cymbals.

Understanding Audio Basics

Understanding Impedance in Audio

Explains impedance of inputs and outputs and its effect on signal flow.

Balanced vs. Unbalanced Connections

Discusses balanced and unbalanced connections and their advantages in audio.

Cables and Connectors Importance

Discusses the importance and quality of cables and connectors for signal integrity.

Microphone Types Overview

Provides a basic overview of dynamic, condenser, and ribbon microphones.

Function of Preamplifiers

Explains the function and types of preamplifiers used in audio systems.

How Audio Compression Works

Explains how a compressor works, its parameters, and dynamic range control.

Understanding Equalization

Explains what an equalizer is, its bands, and frequency adjustments.

Equalization Tips for Instruments

Lists recommended frequency ranges for various instruments during equalization.

Frequently Asked Questions (FAQs)

Common Operational Questions

Addresses questions on gain limits, tube types, international use, and powering down.

VT-737 sp Product Comparisons

Compares VT-737sp's preamp, compressor, and EQ to other Avalon models.

Trouble Shooting Common Issues

Resolving Power and Sound Issues

Addresses problems like no power, no sound, dim lights, and noise.

Troubleshooting Distortion and Overload

Solutions for distorted sound, hum, buzzing, and overloading recording devices.

Identifying Tube Related Symptoms

Identifies symptoms that may indicate failing vacuum tubes.

Service, Warranty, and Support

Service and Contact Information

Provides contact details for Avalon Design and service inquiries.

Product Warranty Terms

Details the product warranty, coverage, and conditions.

Return Procedure for Repairs

Explains the process for returning the unit for repair or exchange.

Safety Standards Conformance

Lists safety standards the product conforms to.

Technical Information and Specifications

VT-737 sp Detailed Specifications

Lists the technical specifications including circuit topology, gain ranges, and I/O levels.

Compressor and Equalizer Specifications

Details specifications for the compressor, equalizer, filters, and AC power.

VT-737 sp Recall Sheet

Provides a sheet for recording and recalling settings for the VT-737sp.

VT-737 sp Block Diagram

Illustrates the signal flow and internal circuitry of the VT-737sp.

VT-737 vs VT-737 sp Comparison

Compares the original VT-737 with the VT-737sp, highlighting key differences.

Appendix A - Glossary of Terms

Avalon VT-737SP Specifications

General IconGeneral
TypeChannel Strip
Channels1
Output Impedance600 ohms
PreampVacuum Tube
InputsMicrophone, Line, Instrument
OutputsBalanced XLR
Dimensions19"
Weight10 lbs
THD0.5%
Input Impedance1 Megohm (Instrument), 1.5 Kohm (Mic)
Maximum Output Level+30dBu
Power SupplyInternal
CompressorOptical Compressor