poynton said:Someone on the forum recently suggested wooden bowls from IKEA use in pairs to form a sphere.
John L said:Ok, I did a google search on Sonotube and speakerbuilding
John L said:I don't know anything about the Sonotube.
They make great raw material for woofer boxes. I have a push-push sub project on the TL site and they sent me all sorts of legal mumbo-jumbo to have me remove the trade-marked SonoTube from the pages (and in the future if i have the choice i'll buy a different brand)