Hi guys,
I'm looking to put together a list of manufacturers who make speaker drivers and use hard foam (the harder/more brittle the better) for cone material. This extruded hard foam cone can be sandwiched between aluminum foils, or Kevlar/paper sheets, etc., but the core material has to be hard foam. I would also prefer that the driver size would fall between 4.5" and 5.5". This is for a project that I'm going to undertake and I would like to start testing some drivers.
Also, I'm already aware of the Zellaton cones made by Podszus Gorlich and its rip off ATD Hypergraph (Magico Mini uses them) drivers.
Thanks for all your help!
Norbert
