Thanks Jack, and Lenny.
I removed the cab. Sure enough my speaker was damaged from over powering. It still works if I apply small amount of pressure with my finger on the speaker cone. So I looked around and there is not much choice for a 45mm speaker. I ended up getting this on ebay and I'll cut the ears off. I hope it fits.
https://m.ebay.com/itm/2pcs-1-75-quo...=1721787650006