did 411s ever come with "a very thin cambric cloth" ?

[Phil-G]

"The Altec 411-8a woofers still has the " proper " original surrounds, they are a very thin cambric cloth with a protective coating, allowing these drivers the ability to still perform to original Altec specifications,"

Altec Style Vintage Speakers w Altec 411 8A 15" Woofer Horns Phillips Peerless | eBay

[bowtie427ss]

"The Altec 411-8a woofers still has the " proper " original surrounds, they are a very thin cambric cloth with a protective coating, allowing these drivers the ability to still perform to original Altec specifications,"

Altec Style Vintage Speakers w Altec 411 8A 15" Woofer Horns Phillips Peerless | eBay

Yes, they did.

Then Altec fixed them.