Yesterday, 05:49 PM
Mike;
As I was saying it doesn't look like they used much of a bobbin for the field coil, not like a Magnavox one would have. It's strange because the pie pan speaker coils do appear to have a cardboard bobbin in them, whereas that G series one looks like it was just wrapped in paper. I would guess that they had a removable bobbin for the G type speakers, maybe I should have a look at the 1929 Philco factory tour film again to see what they did do?
Regards
Arran
As I was saying it doesn't look like they used much of a bobbin for the field coil, not like a Magnavox one would have. It's strange because the pie pan speaker coils do appear to have a cardboard bobbin in them, whereas that G series one looks like it was just wrapped in paper. I would guess that they had a removable bobbin for the G type speakers, maybe I should have a look at the 1929 Philco factory tour film again to see what they did do?
Regards
Arran