Found a pair of cerwin drivers. The id number on back is 15w5 and it has a 1999 date on them. I am unsure if these are automotive subs or home audio woofers. A post here does mention them as suitable replacements for the 380se speaker. Just want to be sure.
https://audiokarma.org/forums/index.php?threads/cerwin-vega-316r-15-quick-question-or-two.550231/
https://audiokarma.org/forums/index.php?threads/cerwin-vega-316r-15-quick-question-or-two.550231/