User`s manual

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Resonant Surfaces and ObjectsResonant Surfaces and Objects

Resonant Surfaces and Objects. All of the surfaces and

objects in your room are subject to the frequencies

generated by your system. Much like an instrument,

they will vibrate and “carry on” in syncopation with

the music and contribute in a negative way to the

music. Ringing, boominess, and even brightness can

occur simply because they are “singing along” with

your music.

Resonant CavitiesResonant Cavities

Resonant Cavities. Small alcoves or closet type areas in

your room can be chambers that create their own

“standing waves” and can drum their own “one note”

sounds.

Clap your hands. Can you hear an instant echo respond

back? You’ve got near-field reflections. Stomp your foot

on the floor. Can you hear a “boom”? You’ve got standing

waves or large panel resonances such as a poorly

supported wall. Put your head in a small cavity area and

talk loudly. Can you hear a booming? You’ve just experi-

enced a cavity resonance.

Rules of ThumbRules of Thumb

Rules of Thumb

Hard vs. Soft SurfacesHard vs. Soft Surfaces

Hard vs. Soft Surfaces. If the front or back wall of your

listening room is soft, it may benefit you to have a

hard or reflective wall in opposition. As well, the

ceiling and floor should follow the same basic

guideline. However, the side walls should be roughly

the same in order to deliver a focused image.

This rule suggests that a little reflection is good. As a

matter of fact, some rooms can be so “over damped”

with carpeting, drapes and sound absorbers that the

music system can sound dull and lifeless. On the

other hand, rooms can be so hard that the system

can sound like a gymnasium with too much reflection

and brightness. The point is that balance is the

optimum environment.

Breakup ObjectsBreakup Objects

Breakup Objects. Objects with complex shapes, such as

bookshelves, cabinetry, and multiple shaped walls

can help break up those sonic gremlins and diffuse

any dominant frequencies.

Solid CouplingSolid Coupling

Solid Coupling. Your loudspeaker system generates

frequency vibrations or waves into the room. This is

how it creates sound. Those vibrations will vary from

20 per second to 20,000 per second. If your speaker

system is not securely planted on the floor or solid

surface, it can shake as it produces sound and,

consequently, the sound can be compromised. If

your speaker is sitting on the carpet and only foot

gliders are used, the bass can be ill defined and even

boomy. The use of spikes is recommended to insure

secured footing for your speakers.