06-01-2008, 11:22 AM
Hi Gary
The speaker used in the 37-89 is S-16. After some searching...I found that Model 38-89 also uses this speaker, but apparently no other Philco model used the S-16.
But there is good news. Philco did not give the DC resistance of the field coil in the 37-89 schematic...but they DID in the 38-89 schematic.
It is 1140 ohms.
This means that an S-7 speaker will work as a substitute. The S-7 was used in a number of Philco sets, including the following models: 60, 37-60, 37-61, 37-610, 37-620, 38-620.
I would offer to recone it for you, but so far, I have only been able to successfully recone K series Philco speakers. S series speakers have smaller voice coils and the one time I tried to recone one, it did not work out correctly. I *think* I know what I did wrong, but I have not had time nor inclination to try again.
The speaker used in the 37-89 is S-16. After some searching...I found that Model 38-89 also uses this speaker, but apparently no other Philco model used the S-16.
But there is good news. Philco did not give the DC resistance of the field coil in the 37-89 schematic...but they DID in the 38-89 schematic.
It is 1140 ohms.
This means that an S-7 speaker will work as a substitute. The S-7 was used in a number of Philco sets, including the following models: 60, 37-60, 37-61, 37-610, 37-620, 38-620.
I would offer to recone it for you, but so far, I have only been able to successfully recone K series Philco speakers. S series speakers have smaller voice coils and the one time I tried to recone one, it did not work out correctly. I *think* I know what I did wrong, but I have not had time nor inclination to try again.
--
Ron Ramirez
Ferdinand IN
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