Hey, does "Trumbaschl" mean anything in English, or is it one of those terms that just don't translate properly?
I didn't realize that the fixing centers on a British device would fit a German box. The screw threads themselves don't surprise me, however. British boxes switched to metric 3.5mm threads when the industry changed to metric in general around 1970. Earlier boxes and screws are 4BA, which at first glance look almost the same but are just
different enough to pull straight out or jam in solid!
Das werden Lautsprechersteckdosen gewesen sein. Wenns die Schule war dann vermutlich in 100V Technik.
Is somebody talking about a 100V speaker distribution system in an old school here? British PA systems also used the 100V line with matching transformers extensively, although I believe they weren't commonly used (if at all?) in the U.S. (I believe a 70V system was the norm).
Alte österreichische Radios sind für 110, 127, 150, 220 und 240V einstellbar.
Where did your 150V come from?
I wish I'd continued studying German at school now!
BTW, ich liebe die Katze!