This has been posted many times in the past on previous threads, but it's no problem whatsoever to do so again: The original 2ax was introduced in 1964 as a replacement to the 2a. It retained the cloth-surround 10" woofer and 1 3/8" "fried egg" tweeter of the 2a, but replaced the twin 5" angled midranges with a new 3 1/2" cone. Crossover frequencies were 2000Hz and 7500Hz. The logo was a square brass "AR Inc." in one corner and a brass "a" in the other corner. In 1968/69, the AR-5 was introduced