I N S T A L L A T I O N 
LOCATION
The acoustic properties and size of the listening environment can drastically influence the SPL (Sound Pressure Level) and f3
Studio Installations
In studio installations, damping material is usually used on the walls and ceilings make the room “acoustically dead.” The main monitors are typically located 3' to 6' from the mixing console and therefore considered a near field (close field) application. In this type of anechoic environment, the subwoofer will tend to experience minimal "Boundary Loading" effects. For studio installations, HAFLER recommends experimenting with different locations within the studio that minimizes rattles or vibration of other equipment. You can fire the subwoofer downward (FIG. 1) or fire the subwoofer directly facing forward (FIG. 2). In either application keep the subwoofer cabinet at least 5" (12.7 cm) away from any wall.
|
|
|
|
| Keep subwoofer enclosure |
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
| |
|
|
| FIG. 1 | 5" (12.7 cm) from any wall | FIG. 2 |
| ||
|
|
|
|
| ||||
| Downward Firing |
| Forward Firing |
| ||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Home Theater Installations
Home Theater installations are typically medium sized living rooms or game rooms that have large flat, uncov- ered walls. Acoustics in this type of installation can have a big effect on the SPL and f3 of the subwoofer because the walls are very reflective. The only elements in these installations that acoustically "absorb" sounds are furniture and carpet. Dramatic "Boundary Loading" can be achieved by locating the subwoofer under a table, next to a wall or in a corner (FIG. 4), thus increasing SPL and lowering the f3 of the subwoofer system. Locating the subwoofer in the middle of the room or in a large open area where there are few reflective surfaces will cause a decrease in SPL and an increase in f3. Experiment with different locations in the room to determine which type of bass response works best in your home theater.
Left | Center | Right |
Front | Front | Front |
|
| Subwoofer |
Left |
| Right |
Rear |
| Rear |
| Listening Area |
|
| FIG. 4 |
|
Position the subwoofer near a wall or in a corner | ||
- 9 - |
|
|
