Eminence Sigma Pro-18A-2

I used this as a replacement speaker in my SWR Big Ben bass cab.
The power rating was a bit higher than the original but was the closest spec I could find, and I had plenty of headroom with my power amp anyway.
Sounds great, good build quality. No downside.
If anyone else uses it in the same cab I did, the profile is a bit prouder than the original, so I had to find a way to raise the front grill by 2 to 3 mm so it is clear from the edge of the speaker.