Also different cone part number to the 'regular' 515B
Also different cone part number to the 'regular' 515B

Most likely reconed with whatever was lying around. Have never seen a cap like that on an Altec.
Your neighbors called. They like your music.
It is perforated tho. Very very odd.
The cone part is an Altec one, 21353-3. Maybe a 515 or 803 cone?

That vented cap is used on cheaper musical instrument speakers. I think the reconer did not have an Altec cap and had to go ahead anyway.
Your neighbors called. They like your music.
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