Thanks for the explanation. Maybe feedback loop was not the right word, but I thought a similar effect should happen even in acoustical reproduction. Some of the (I assume) very loud sound waves from the horn should affect the diaphragm while it is already reproducing the next notes from the record, thus creating some kind of loop effect? Or make the tonearm or other parts of the gramophone vibrate? Please don't get me wrong, I think this is an amazing construction. I simply don't understand why one would put the gramophone right in front of the horn instead of somewhat to the side, where such concerns would not come into play.emgcr wrote:...
The gramophone is entirely acoustic and spring driven---nothing electrical at all---thus "feedback loops" etc are of no relevance.
Thanks again
Andreas