Originally Posted by BirdRider
The foam sent with the packaging was some pretty decent open cell foam. I allmost think it was intentional for the use in the speakers. Can you get normal polyfill at craft stores?
I'll come clean. I'm the one that packages them.
Sorry, I figured you knew that when you put the "
" in your earlier post.
Some of the packages I box up get packing peanuts, foam strips, or many times, both. The colorful stuff is closed cell, the light or dark grey is open cell. I have a lot of people ask about that foam for the same exact reason you did. It is good stuff.
There's a company fairly close to me and they get huge pallets of various foam delivered. I guess when the actual foam manufacturer from England slices the sheets and the thickness is off a little bit, they write "DUNNAGE" on it really big and use it to cover the pallet, or cover the top sheet on the pallet. The local foam company then sells it. I bought it to help wrap the big horns from Poland but occasionally slice up a thinner sheet to use. But it's normally beat up pretty bad.
I then noticed they throw out a bunch of thin strips of the really good quality stuff. They cut off the edges of every sheet. Normally the strips are about 1.5" wide. I can get that stuff for free. But I did buy some 3"+ wider strips to experiment with for speaker enclosures. Just never got around to finishing that project.
Again, sorry for not coming clean earlier.
Edit: I just checked out your build, they look nice. One other question people ask is about reversing the polarity on the tweeter. It's in Paul's write up, so you probably already did that when you assembled the crossover.