So many years ago ( maybe 10ish ), I bought an Adire Audio Shiva. It was a very popular sub with a very high Xmax. I put it in a 17.5" x 17.5" sealed cabinet.
It sounds great and worked great for years.... Then the plate amp went out, and last year I had to get another. Well, it had an issue after 5 months, so I had to get it serviced.
At this point, I am thinking of sealing the back and going with a monoblock amp.
What would you do?