Earthshaker
New Member
Hi all, I was just thinking about an article I read some time ago, I don't remember if it was online or in print. Basically the project consisted of a square shaped tapered horn (like some early radar devices) the "mouth" was about a foot square the thing then tapered down to about a 3" square, this end is where the microphone went. Anybody remember this article?, does anyone have a copy?