AD_Pickup,
there is nothing special about the speaker in either radio. I have used the new speakers in several slant back versions. The difference between the two radios with regards to the speakers is that there is less depth for a speaker to fit in the straight back version. The original spaeakers had a magnet with a smaller diameter but the new speakers that I have seen have a much larger magnet and the frame of the speaker, being at a different angle will not fit inside the straight back version. However, Denny Graham was able to make a new speaker from one of the vendors fit into a straight back model.
By the way, what was the problem that you experienced with your speaker after it had a new cone installed?
I will send you an Email.
