Re: Loudspeaker black paint?
Warnex is hard to obtain in US. I have used Duratex, and was not impressed. I have come to believe that anything with an "ex" suffix is vinyl/latex based and essentially unsuitable for our app.
I've been using Polane T for 7+ years and never regret the cost of the changeover. I apply with an HVLP turbine and can apply sealer/cover/texture coats with repeated great results.
Until polyurea coatings (with their own limitations for repair) work for small batch production, this where we are.