My Machine for Queen was a great success. It made it through the whole “Live at Wembley Stadium”, until the foam around the left Advent’s woofer dissolved right at the end of “God Save the Queen”. I commend the speaker for sacrificing its own integrity to sell the bit.

(The left Advent still had its original foam; I re-foamed the right one about five years ago after it dissolved due to vibrations in a U-Haul. It’s only about $20 for everything you need to do the job.)