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Philco 42-390, code 121 speaker
#5

>>A closer examination of the very small print schematic indicates that the speaker is a PM type.


http://www.nostalgiaair.org/PagesByModel...013535.pdf

This shows a Field Coil time, not a PM.

>> If I cannot locate an original speaker, I will wind a FC for 1100 ohms.

I do not understand. What field coil are you talking about, if your speaker is a PM one, and you do not have the original?


As for the ratio, seems reasonable. Class AB load is 12K, so 16K is plausible. Your transformer then should convert 1.25 Ohm into 16K.

People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.


Messages In This Thread
Philco 42-390, code 121 speaker - by Stevelog - 11-20-2024, 12:07 PM
RE: Philco 42-390, code 121 speaker - by GarySP - 11-20-2024, 06:24 PM
RE: Philco 42-390, code 121 speaker - by Stevelog - 11-20-2024, 07:21 PM
RE: Philco 42-390, code 121 speaker - by Stevelog - 11-26-2024, 02:57 PM
RE: Philco 42-390, code 121 speaker - by morzh - 11-26-2024, 05:18 PM
RE: Philco 42-390, code 121 speaker - by Stevelog - 11-26-2024, 06:39 PM
RE: Philco 42-390, code 121 speaker - by morzh - 11-26-2024, 08:38 PM



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