Contents
Serial Numbers
Handcrafted by
Music al Master piec es
Page
7 Warranty
Table of Contents
10 Features
1 Introduction
Contents
2 Unpacking Instructions
Introduction
1. Remove screws
2.1 Opening the Crate
2. Lift case
3. Slide speaker
Orientation of the Felt Anti-DiffractionMask
2.2 Installing the Grilles
2.3 Replacing Grille Pins
4.Carefully pull the grille cloth away from the frame mounting hole. The mounting hole must be clear of all obstacles during pin installation
Connecting the Speaker to the Amplifier
3 Wiring Instructions
Do NOT over-tightenthe screws
Introduction
INPUTS
From Amplifier
4 Break-inPeriod
5 Maximizing Performance
Speaker Placement and Symmetry
Break-in
Grille Assemblies
Apex Couplers
Toe-In
Corner Treatment
First Reflection Points
6 Care of Your Loudspeakers
Grille Assembly
Cabinet Hardwood Finish
Drivers
In the Event of a Problem
7 Warranty
Warranty Statement
Page
Introduction
8 Room AcousticsandSpeaker Position
Basic Room Acoustics
An Optical Analogy
8.1 Standing Waves
8.2 Flutter Echo
8.3 Early Reflections
Avoiding Early Reflections
Since the floor is within 5 feet of the speaker, it is best to have a carpeted floor to absorb floor reflections. A thick, dense carpet and pad will absorb lower frequencies more effectively than a thin one. Due to their complex structure, carpets and pads of natural materials, such as wool and jute, will exhibit a more uniform absorption over the frequency spectrum than synthetic materials will
8.4 Bass reinforcement
As frequency increases and wavelength becomes more similar to the distance to the boundary, the phase difference between original and reflected waves increases, and the air coupling effect is diminished. In particular, when the wavelength equals about four times the distance to the boundary, the reflected wave is antiphase to the original wave, resulting in a cancellation dip in the output. At frequencies above this level, the effect becomes less significant and creates similar but smaller variations in output. Figures 8.3 and 8.4 illustrate these concepts
Page
Flutter Echo and Standing Waves
8.5 Summary of Recommendations
Early Reflections
Speaker Placement
8.6 A Listening Room Example
Introduction
9 Accuracy of Bass Reproduction
Fast Bass
9.1 Sensitivity to Time-RelatedInformation
Anechoic vs. In-RoomFrequency Response
9.2 Rationale
A Correlation with Amplifier Measurements
9.3 Measurements of Audio Equipment
Loudspeaker Measurements
Designing for Accurate Bass Reproduction
Listening for Size Distortions
Frequency Response Effects
Transient Response Effects
9.4 Conclusion
10Features
Recommended Amplifier Power
11 Specifications
Wiring Methods
Dimensions
