Velodyne Digital DrivePLUSSeries - Manual (Page 28)

the parametric filter frequencies, bandwidths and levels. It’s your subwoofer, not ours any more. You have the freedom to make it sound the
way you want it to.
Optimize for Subwoofer Placement
When you unpack the subwoofer, you place it in the room according to the information in the general section and optionally the ”Crawl
Test” section in the Subwoofer Placement Recommendations Guide. The “Crawl Test” can help you to improve the bass reproduction quality
by simulating moving the subwoofer around the room using acoustic reciprocity to find the placement that gives you the sound you like
best. With the ”Crawl Test” you have to move around the room. Moving yourself around is easier than moving a heavy subwoofer around.
If you want to use the ”Crawl Test”, do so before performing any of the optimization methods.
Room placement is one step to equalize the subwoofer(s) to the room. Subwoofers operate at extremely low frequencies, which are primarily
omni-directional. Hence; you can’t usually tell where the bass is coming from. Finding the best location for your subwoofer in your room is a
trial and-error process.
With the ”Crawl Test” Technique:
• You find the best tradeoff between appearance of the subwoofer in the room and the subwoofer sound quality.
• You optimize the subwoofer placement when the room is in the configuration that it is in when you typically listen, such as doors opened
or closed, curtains open or closed, etc. Additionally, you can learn what effect the configuration has on bass quality, by changing it and
listening or measuring.
• You can rely just on what you hear to pick a location or you can use the microphone and Auto-EQ PLUS sweep tone with the subwoofer set
to Manual EQ to look at the frequency response graphs to see which location is best.
Your satellite speakers also contribute to how your audio system sounds. If moving your satellites is an option, you might likewise place them
through experimentation and measurement.
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Digital Drive PLUS User’s Manual OPTIMIZATION