Avalon Idea Manuale utente
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IDEA
DESIGNED BY NEIL PATEL FOR AVALON ACOUSTICS
This product is certified to meet the requirements of the European Union (EU)
Electromagnetic Compatibility (EMC) Directive (2004/108/EC). Because the
permanent magnets attached to the loudspeaker drivers produce magnetic fields, it is
recommended that the product not be positioned in very close proximity to computer
monitors or television sets.
Table of Contents
1 Introduction.........................................................................................................................5
2 Unpacking Instructions.......................................................................................................6
Introduction ........................................................................................................6
Contents..............................................................................................................6
2.1 Opening the Crate..................................................................................................7
2.2 Installing the Grilles...................................................................................................8
Orientation of the Felt Anti-Diffraction Mask.................................................8
2.3 Replacing Grille Pins .................................................................................................8
3 Wiring Instructions ...............................................................................................................11
Introduction ........................................................................................................11
Connecting the Speaker to the Amplifier......................................................11
4 Break-in Period....................................................................................................................12
5 Maximizing Performance ...................................................................................................13
Break-in................................................................................................................13
Grille Assemblies.................................................................................................13
Speaker Placement and Symmetry................................................................13
Toe-In ...................................................................................................................14
Apex™ Couplers................................................................................................14
First Reflection Points .........................................................................................15
Corner Treatment...............................................................................................15
6 Care of Your Loudspeakers................................................................................................16
Cabinet (Hardwood Finish) ..............................................................................16
Grille Assembly ...................................................................................................16
Drivers...................................................................................................................16
7 Warranty ..............................................................................................................................17
In the Event of a Problem.................................................................................17
Warranty Statement..........................................................................................18
8 Room Acoustics and Speaker Position .............................................................................20
Introduction ........................................................................................................20
An Optical Analogy...........................................................................................21
Basic Room Acoustics.......................................................................................21
8.1 Standing Waves .......................................................................................................22
8.2 Flutter Echo ...............................................................................................................23
8.3 Early Reflections .......................................................................................................24
Avoiding Early Reflections ................................................................................25
8.4 Bass reinforcement ..................................................................................................27
8.5 Summary of Recommendations............................................................................31
Flutter Echo and Standing Waves...................................................................31
Speaker Placement...........................................................................................32
Early Reflections .................................................................................................32
8.6 A Listening Room Example.....................................................................................33
9 Accuracy of Bass Reproduction........................................................................................34
Introduction ........................................................................................................34
9.1 Sensitivity to Time-Related Information.................................................................35
"Fast Bass" ............................................................................................................35
9.2 Rationale...................................................................................................................36
Anechoic vs. In-Room Frequency Response.................................................36
9.3 Measurements of Audio Equipment.....................................................................37
A Correlation with Amplifier Measurements..................................................37
Loudspeaker Measurements............................................................................38
Designing for Accurate Bass Reproduction...................................................39
Frequency Response Effects............................................................................40
Listening for Size Distortions...............................................................................40
Transient Response Effects................................................................................41
9.4 Conclusion ................................................................................................................42
10 Features..............................................................................................................................43
11 Specifications....................................................................................................................44
12 Notes..................................................................................................................................45
5
1 Introduction
The IDEA represents a synthesis of our aesthetic and sonic ideals in a sleek
form. Combining the classic proportions of our world renowned cabinetry
with the latest technological innovations in circuit design, the IDEA will
unfold an expansive presentation in even modest listening spaces,
exemplifying the most sought after characteristics of high-end audio
reproduction.
Transparency and expansiveness in soundstaging are at the heart of the
IDEA’S presentation envelope, while never sacrificing or exaggerating
immediacy and dynamism. The black backgrounds and crisp articulation that
distinguish every AVALON ACOUSTICS design are on display through each genre
of musical style within the recording engineer’s reach. Contrasts both
dynamic and harmonic are presented vividly within a panoramic soundstage
built on a foundation of low frequency solidity.
All AVALON ACOUSTICS loudspeakers are engineered and built to the highest
standards in the audio industry. Handcrafted in Boulder, Colorado by
dedicated craftsmen and technicians, each Idea is measured and matched
creating perfect symmetry and coherency. Before leaving the factory each
of our masterpieces are subjected to a demanding array of quality control
and testing procedures to assure flawless and consistent performance. Our
creations are a work of art in which we take great pride, designing and
building each one exclusively here in the foothills of the Rocky Mountains.
www.avalonacoustics.com
6
2 Unpacking Instructions
Introduction
Your AVALON ACOUSTICS loudspeakers were shipped in a heavy-duty crate to
ensure their safe arrival. It is recommended to save these crates for possible
future use. Due to the weight of the speakers, it will require two persons to
un-crate them and position them for listening. Please arrange for your dealer
or another able bodied person to assist in this project.
Contents
The two shipping crate contains the following items:
•two loudspeaker cabinets
•two grille assemblies
•the owner’s manual
•one set of six Apex™ Couplers
•an accessory bag
The grille assemblies and owner’s manual are contained in an outer
compartment on the top of the shipping crates. The Apex™ Couplers and
accessory bag are packed together on the bottom of one of the
loudspeaker cabinets.
The accessory bag contains replacement grille pins, a small bottle of furniture
polish, and two lint-free polishing cloths.
IMPORTANT: It is imperative that the Apex™ Couplers are utilized, in
order to insure that the bottoms of the loudspeakers are not blocked.
This is especially important on thick carpeting.
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2.1 Upacking the Speakers
8
2.2 Installing the Grilles
The grille assemblies are behind a panel on the outside of the speaker crate.
Remove the screws securing the panel, and then carefully pull the grilles
straight out. The grilles are installed with friction fasteners and press into place
on the speaker cabinets. Please see Figure 2.2.
Orientation of the Felt Anti-Diffraction Mask
The grille assembly includes a felt anti-diffraction mask. Should the felt mask
be removed, be sure to note the correct inside-outside orientation when
re-installing it. The tweeter and midrange openings are beveled on the side
that faces the listener (away from the speaker).
Figure 2.2 - To install the grille assemblies.
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2.3 Replacing Grille Pins
The grille pins installed on the grille assemblies are fragile and can be easily
damaged. Should any of the pins break, you may replace them using the
following procedure.
1. Place the grille assembly face-down on a padded surface (a towel or
carpeting).
2. Remove the damaged grille pin by pulling it straight out with a small pliers
or similar tool. Please refer to figure 2.4. Make sure that the complete pin is
removed and that there are no pin fragments left in the mounting hole.
3. Insert the new grille pin in the grille pin installation tool (see figure 2.5).
Figure 2.4 - Removal of broken grille pin. Check for pin fragments in
the mounting hole.
Figure 2.5 - Insertion of new grille pin into installation tool.
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4. Carefully pull the grille cloth away from the frame mounting hole. The
mounting hole must be clear of all obstacles during pin installation.
5. Place the exposed end of the grille pin in the open mounting hole. Check
to insure that the grille cloth is not trapped between the pin and frame. Use a
small hammer and gently tap the new grille pin in place. Then, pull the
insertion tool off the new pin and verify that the pin flange is flush with the
surface of the grille. Please refer to Figure 2.6.
6. Reposition the grille cloth that was pulled away from the frame mounting
hole in step 4. The cloth should lay flat and wrinkle-free.
Figure 2.6 - Installing grille pin into TRANSCENDENT grille frame. Note
that after installation, the grille pin flange is flush with the surface of the
ill
WARNING: Grille pin breakage may result if the grille cloth becomes
trapped between the pin and frame during installation.
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