Noisy Doors

The solid wood doors in our new offices close with a distinct "thud!" with even a moderate push. I tried the little plastic/rubber bumpers on the frame and they weren't very effective.Is there anything else I can use, short of door closers? Dave
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file
Upload is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.