Don, your post prompted me to pull out my salvaged 2245 cone assemblies to weigh them. All three have the rotted foam removed, but the dust cap, tinsel leads, and spiders are intact but stretched out.
The weights are 159g, 160g, and 160g
JBL T/S parameters specify 185g Mms
Considering mine are missing the foam surround, 25g seems appropriate to make up the difference between my weights and JBL T/S specs.
Has anybody here bought re-foam kits that can weigh the foam surround?
One of these days I'll surgically remove the sunken spider on one of these and re-spider, re-foam, and re-install it in the frame.
One of these days...
At least that's what I keep telling myself