Velodyne Digital Drive User’s Manual Page 14
A Word About Room Placement
Room placement is the first step in equalizing your sub(s) to your room. Subwoofers operate at
extremely low frequencies, which are primarily omni-directional (that is, you can’t usually tell where
they are coming from). As a general rule, placing the sub(s) in the corner(s) of a room will result in the
maximum number of peaks and minimum number of valleys in the response. Remember, the goal is
to find the best location(s) that result in the minimum number and severity of valleys. The worst
location for a subwoofer is typically far away from any walls, and close to the center of your room.
Avoid these locations when possible. When using a pair of Velodyne subwoofers in stereo, it is
preferable to place each subwoofer by the satellite of the same channel. If moving your satellites is an
option, they too can contribute to peaks and valleys and should be likewise placed through
experimentation.
10. Now you can begin moving your subwoofer around the room to find the best placement position.
You need to find the best tradeoff between appearance and room response. Be sure the room is
in the configuration that it will be in when you typically listen – e.g. doors closed, curtains open or
closed, etc. As you move the subwoofer, refer to the “SYSTEM RESPONSE” graph to minimize
peaks
and especially valleys in the response curve. As an example, you might find a location that
smoothes the graph as follows (see next page):
