A:
Unfortunately we do not have a compatibility database for all speakers and mounts. This speaker stand should be compatible with most speakers but i would go out to the Sanus website and under the download tab for the HTB3 there is an instruction manual and on page 4 shows a picture of all the brackets included, you should be able to get an idea from this if the speaker stand will work or not.
Here is a link to the site...
http://www.sanus.com/us/en/products/speaker-foundations/sp-home-theater/HTB3