Looking for Facts and Why on This

[guitarkeys.com]

Fired up 2 T60s in about a 40 x 60 foot room last night. They rock and I know they do so this isn't about the performance of the T60 which is off the charts.

This is about a large horn subs performance in a small room. I had some other "lesser" subs comprised of multiple 6.5" speakers that actually performed much better in the space. Placement of the subs was the same.

I've run into this before testing subs in my house (Titans), but have hit that point where I really want to understand what is going on physically in the space that causes this to happen.

I found the quote below on the web and know that I'm not the only one to experience this. The website this is quoted from doesn't believe in long throw and short throw woofers either - so I was surpised to see this on the site. But it is described as a "Phenomenon" which really isn't an explanation.



"Also, low frequency horns need to be allowed one wave length of the lowest frequency they are going to be called on to reproduce to fully develop. In the case of a 30 - 40 Hz note, this could be 40 - 50 feet from the box. This phenomenon probably contributes to the perceived increase in "throw" of the box design. On the flip side, this property makes bass horns more difficult to work with in smaller rooms."

My best guess at this point is that the sub is actually maintaining a compression of the entire room not allowing rarefraction to occur???

[Bill Fitzmaurice]

http://billfitzmaurice.info/forum/viewt ... f=10&t=999