11-04-2019, 11:02 AM
Looking at the Philco Speakers file available here:
https://philcoradio.com/phorum/showthread.php?tid=215
we see that output transformer 2766 was also used on speakers K and K-2.
The speaker used in models 40 and 41 was "J". That is a 10-1/2" unit with a 3 ohm (!) field coil.
Speaker K and K-2 are 8 inch units with 3100 ohm field coils. Speaker K was made for models 20 and 21; K-2 was used in the early version of model 90 with two 45 output tubes.
So...assuming your speaker's field coil is OK and measures around 3100 ohms, and assuming the 2766 output transformer is OK, you should be fine. Your speaker is clearly an 8 inch unit.
Measure - don't assume - to be certain.
https://philcoradio.com/phorum/showthread.php?tid=215
we see that output transformer 2766 was also used on speakers K and K-2.
The speaker used in models 40 and 41 was "J". That is a 10-1/2" unit with a 3 ohm (!) field coil.
Speaker K and K-2 are 8 inch units with 3100 ohm field coils. Speaker K was made for models 20 and 21; K-2 was used in the early version of model 90 with two 45 output tubes.
So...assuming your speaker's field coil is OK and measures around 3100 ohms, and assuming the 2766 output transformer is OK, you should be fine. Your speaker is clearly an 8 inch unit.
Measure - don't assume - to be certain.
--
Ron Ramirez
Ferdinand IN
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