02-12-2012, 06:52 AM
Sorry, Daniels Dad, in trying to point you to an accurate schematic I failed to address your other questions.
From what I have been told by Canadian acquaintances in the radio hobby, 25 cycle AC was widely used in Canada for many years, even after we Americans standardized on 60 cycle (60 Hz) AC current. You Canadians now have 60 Hz AC as well. Your Canadian Philco 40 will work fine on 60 cycles. The opposite, however, is not true - a power transformer designed for operation on 60 cycle AC will burn up if 25 cycle AC is applied.
It would be best if the original speaker were used, or the same type of speaker pulled from a junk Philco set of the same type. There are people who recone speakers, but this is generally not a cheap job. A modern PM speaker could be substituted, but then the original speaker's field coil has to be replaced with something, usually a high wattage resistor of the same resistance as the original speaker field. That resistor will have to be placed somewhere on the chassis where it can safely dissipate the heat it will produce, away from other components. See why it is better to use the original speaker, or a substitute from a similar Philco set?
Good luck. You shall need it. Just don't resort to using the Red Green method of patching everything up with duct tape.
From what I have been told by Canadian acquaintances in the radio hobby, 25 cycle AC was widely used in Canada for many years, even after we Americans standardized on 60 cycle (60 Hz) AC current. You Canadians now have 60 Hz AC as well. Your Canadian Philco 40 will work fine on 60 cycles. The opposite, however, is not true - a power transformer designed for operation on 60 cycle AC will burn up if 25 cycle AC is applied.
It would be best if the original speaker were used, or the same type of speaker pulled from a junk Philco set of the same type. There are people who recone speakers, but this is generally not a cheap job. A modern PM speaker could be substituted, but then the original speaker's field coil has to be replaced with something, usually a high wattage resistor of the same resistance as the original speaker field. That resistor will have to be placed somewhere on the chassis where it can safely dissipate the heat it will produce, away from other components. See why it is better to use the original speaker, or a substitute from a similar Philco set?
Daniels Dad Wrote:Also there is a pair of wires coming from thetuner assembly. These have a pair of 'new' wires (lamp cord) attached and continuing on to a 'lug' connector which is also going to the speakers.This sounds scary. Sounds like someone did some creative rewiring. Not good. You need that Canadian 40 schematic, with some guidance (which we can provide) on how to read and use it.
Good luck. You shall need it. Just don't resort to using the Red Green method of patching everything up with duct tape.
--
Ron Ramirez
Ferdinand IN
