Avalon Acoustics Isis User Manuals

Table of Contents

• 1 Introduction

  4
• 2 Unpacking Instructions

  5
• Introduction

  5
• Contents

  5
• 2.1 Opening the Crate

  6
• 2.2 Installing the Grilles

  7
• Orientation of the Felt Anti-Diffraction Mask

  7
• 2.3 Replacing Grille Pins

  7
• 3 Wiring Instructions

  10
• Introduction

  10
• Connecting the Speaker to the Amplifier

  10
• 4 Break-in Period

  11
• 5 Maximizing Performance

  12
• Break-in

  12
• Grille Assemblies

  12
• Speaker Placement and Symmetry

  12
• Toe-In

  13
• Apex™ Couplers

  13
• First Reflection Points

  14
• Corner Treatment

  14
• 6 Care of Your Loudspeakers

  15
• Cabinet (Hardwood Finish)

  15
• Grille Assembly

  15
• Drivers

  15
• 7 Warranty

  16
• In the Event of a Problem

  16
• Warranty Statement

  17
• 8 Room Acoustics and Speaker Position

  19
• Introduction

  19
• An Optical Analogy

  20
• Basic Room Acoustics

  20
• 8.1 Standing Waves

  21
• 8.2 Flutter Echo

  22
• 8.3 Early Reflections

  23
• Avoiding Early Reflections

  24
• 8.4 Bass reinforcement

  26
• 8.5 Summary of Recommendations

  30
• Flutter Echo and Standing Waves

  30
• Speaker Placement

  31
• Early Reflections

  31
• 8.6 A Listening Room Example

  32
• Introduction

  33
• 9.1 Sensitivity to Time-Related Information

  34
• "Fast Bass"

  34
• 9.2 Rationale

  35
• Anechoic vs. In-Room Frequency Response

  35
• 9.3 Measurements of Audio Equipment

  36
• A Correlation with Amplifier Measurements

  36
• Loudspeaker Measurements

  37
• Designing for Accurate Bass Reproduction

  38
• Frequency Response Effects

  39
• Listening for Size Distortions

  39
• Transient Response Effects

  40
• 9.4 Important ISIS Recommendations

  41
• 10 Features

  41
• 11 Specifications

  43
• 12 Notes

  44