Tuning a back loaded horn


What is the best material to use to tune a back loaded horn?

After doing some research I saw poly-fil is widely recommended for TL enclosures. Would poly-fil work for a back loaded horn also?

Thanks
Paul
pauly

Showing 3 responses by pauly

Third attempt to respond to Johnk question.

John, the speakers I use is at http://homepage.mac.com/tlinespeakers/FH/download/Sachiko-map-1v0-230307.pdf. I use Fostex 206E drivers.

Thanks
Paul
Rodmann - I put about 5/8 of a pound of polyfill packed quite tightly behind each driver.

The bass that was bugging me is greatly reduced, and somewhat to my surprise, the speakers seem to have more snap, more detail and improved midrange!

Man, back loaded horns are the bomb!

Thanks
Paul
Thanks for the response John. I try some Madisound wool.

Would I start by putting some wool in behind the driver or close to the mouth of the horn? I have a sachiko design (from the Frugal Horn website) with 206 fostex, and I want to bring the upper bass down just little bit.

I am thinking I need to start close to the mouth of the horn.

thanks
Paul