Von Schweikert Audio
World Class Reference Speaker Systems for Music and Film
in the center. Your dealer can recommend tuning products he/she carries and may be able to install them. If your dealer does not offer this service, call the above- mentioned tuning companies for further information.
CUBIC ROOM DIAGONAL LOCATION: Rooms with mathematically repeating dimensions (like 16 x 16 x 8', for instance) will have a midbass/lower midrange ‘loading’ effect due to the similar ratios of boundary distances. In this case, it will help to locate one speaker on each side of a corner and fire the speakers diagonally into the room. Note that you will also need to place your listening chair at a diagonal position as well, at an equilateral triangulated distance.
Diagonal placement is an extreme measure but may be necessary if you wish to achieve the ultimate in accurate frequency response. Diagonal placement will prevent a portion of the standing wave energy from boosting certain frequencies, since the reflection patterns are broken up in this configuration. The distances to each
FLOORING: If you have a hardwood floor, (especially without carpeting), there is the possibility that vibration and resonance will be transferred to the floor, which will then act as a passive radiator. The floor resonance will sound like extra midbass is being added to the sound, and will smear the bass notes as well, since the floor will vibrate long after the woofers stop moving. On bare hardwood floors, it will be necessary to decouple the speakers with the spikes placed on the discs or rubber decoupling feet supplied or products such as Sorbothane by Audioquest. The use of spikes is best suited for carpeted floors and will result in some transmission to wood floors.
In two story homes with wood floors on the second floor, we have noticed a tendency for the floor to absorb deep bass due to sympathetic resonance. In this case, the speaker will sound like it does not have bass, so the cure would be to either move the speakers closer to a boundary where the floor is not flexing as much or to decouple the speaker completely from the floor. That can be accomplished by making a platform from wood filled with sand, or using a granite base several inches thick. In addition to the induced resonance, there will be upper frequency reflections that will affect the midrange/tweeter balance, usually boosting the treble/upper midrange and destroying the image solidity. If you have hardwood floors, installing a thick rug in between the speakers and the listening chair will normally correct this problem.
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