Thanks for the feedback. GB number 5 is now collecting commitments and moving along quite nicely in case more folks want to sign up. I am currently all out if stock.
https://www.diyaudio.com/community/threads/rtr-ssr-speaker-protection-gb5.392399/page-2#post-7198905
https://www.diyaudio.com/community/threads/rtr-ssr-speaker-protection-gb5.392399/page-2#post-7198905