Thanks for the article. I couldn't tell a big difference between the two and I don't know what makes a down-firing better or worse than a front firing so I went by spec and price. I am using it on hardwoods so maybe there would have been more of a difference in a quieter room. Any ideas on placing some kind of "mat" (ie small carpet, rug) under a down-firing to tighten it up? It's not that it needs it but if there's a sound benefit, I'm in.