Quote Originally Posted by NickH View Post
I was thinking that. If its blocked by the diaphragm I would think it would cause some issues with reflection. But if I fill the cavity with a sound absorber and seal the bottom, makes more sense.See what you did? Got me going on a damn tangent, .Well I'm waiting to buy copper anyways. Should change the thread title to filed coil conversion and phase plug modification. If a mod sees that can the change the title?I'm thinking I might try this on a 2445 first. See if I can tell the difference. I need some new diaphragms though,

soon.does anyone know what the phase plug on a 2446 is made from?Nick
I think that it is some zinc alloy, but no other info.
but I think it can be made of aluminum or some 'strong' plastic....
any how the material that will not resonate by itself


Regards
Ivica