|
Hi, Paula,
itīs interesting to follow the history of radios in america (seen from here). Nice things have you got!
You mentioned a Grundig, there was short discussion about stereo. Perhaps you are happy to know you were right:
The most stereo-tubes in europe used two big speaker, placed in the front. (Exceptions can happen).
You are right about the dispersion. This is called "3d", used to fill the room with sound. The tweeters or midrange speakers were mounted on the side of the radio. Used from ca. 1955/56. Amp stages: Often singled ended EL84, some push-pull EL84, expensive models were bi-amped.
First stereo gear was built in 59/60, only amp stereo, no possibility to stereo reception.
Not the number of tubes tells if a radio is stereo or not. Count output transformers. By the way: Stereo was a new gag this days, so the word stereo was placed in prominent places on the radio.
|