05-03-2007, 01:14 AM
Hi:
In the Philco 37 630 and 37 620 series, the standard 8" speaker used(with 3 soldering posts), the ohm rating for the field coil was never mentioned or noted in any of the Philco schematics or parts list. Coming across many of these type speakers I have noticed differences in field coil size and differences in ohm value.
I have mixed and matched these type 8" and even 12" speakers to different chassis 's of the 630 and 620 series and never had a problem. What is the reason for the various size field coils?? (Better sound output)?
Thanks.
In the Philco 37 630 and 37 620 series, the standard 8" speaker used(with 3 soldering posts), the ohm rating for the field coil was never mentioned or noted in any of the Philco schematics or parts list. Coming across many of these type speakers I have noticed differences in field coil size and differences in ohm value.
I have mixed and matched these type 8" and even 12" speakers to different chassis 's of the 630 and 620 series and never had a problem. What is the reason for the various size field coils?? (Better sound output)?
Thanks.
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