[Chris] shows us a 1950s TV that had one of these in it. You could actually stack these one on top the other if you wanted to take your chances and try to keep the old TV working as long as possible.

I’m an ISF-certified TV calibrator and a THX-certified home theater professional, and I’m here to help you understand 4K, HDR, Dolby Vision, Dolby Atmos, and even 8K (and to reassure you that ...