Nope, heavy doping or rubberized, not foam.Foam surround? Hard to tell from the picture but it looks like it. If that’s the case I’m guessing stereo woofer!
No more numbers seen on the speaker ...Are there any markings stamped onto the paper cone itself? Sometimes there might be something there. Also, it's possible that there is a cover on the magnet that can be removed.
The 6 vents makes me think U.S. manufacture. Celestion and Fane usually used 4 vents on their 12 inchers.
The most difficult questionHmmmm...speaker codes are usually 6 digits and the first 3 identify the manufacturer.....I looked on the Weber speaker code lists and don’t see 507 anywhere so this is indeed a mystery!
How does it sound?
So it’s a POS!!! Hang it on your work bench and stick tools to the magnet to keep them handy... LOLThe most difficult question
Weak, missing bass, lot higher frequencies... bass start early to "splash"
It looks sort of like an Eminence Redcoat that's seen better days, though the Redcoat frame has more struts and cutouts.The most difficult question
Weak, missing bass, lot higher frequencies... bass start early to "splash"