Port Hole Positioning

xb2003

Member
The only reason im asking this question is to try and get a little smarter.

How does the position of the port hole on the Bass effect the sound. Ive seen drummers (Pro and semi-pro) have one in the center, 1 toward the side edge, 1 toward the top, and 2 in the bottem. I even have an old Pearl head, which makes a great wall hanging, with a very large hole thats just under center.

What does it do to the sound?

Thanks
 
If you cut the port hole in the center of the head it becomes non resonant. Best to cut the port hole 1-2" in from edge utilizing a 4-5" diameter.
 
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