Full range ribbon

[JacobSijsma]

Ah so they used mylar, damn that stuff is thin...

[midmoe]

I'm getting intrested in building my own ribbons...isn't the limitation with ribbon design about the energy off the back of the ribbon? Doesn't it reflect off the magnet structures and come foward through the ribbon, causing a tiny delay related "smearing" of the original signal? And, isn't this the advantage of the heil AMT, as the energy in the back of the surface has an escape route..? The ribbon design seems easier to build, seems a doable project...

[JacobSijsma]

I think you're mistaking a planar for a ribbon, if you're building a dipole ribbon the energy of the back should be equal to that of the front. I couldn't find aluminum foil that was thin enough to give me the required resistance to go completely transformer-less, I've been experimenting with making household foil thinner by using a simple baking soda solution. I've also tried electrolysis, the foil would become very thin but it would burn tiny holes in it. Anyway the foil is about the right resistance now, now I just need to find the carrier foil to prevent it from ripping apart.

[bear]

For thin foil, unroll a film/foil capacitor... nicely thin stuff.

Apogee used kapton substrate, not mylar.