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Philco 37-660 speaker
Ron Ramirez
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Posts: 13,776
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Joined: Sep 2005
City: Ferdinand State, Province, Country: Indiana
#2

04-23-2013, 05:34 AM
No. The 37-660 speaker has a field coil resistance of 2200 ohms, while the field in the 645's original speaker (H-21, by the way) has a field of only 435 ohms.

Here are speakers that would work in your 645K:

H-21 - 97H, 97D, 97X, 640X
H-26 - 37-650X, 37-650PX, 37-665X, 37-2650X - 460 ohm field, close enough
H-30 - 37-9, 37-10, 37-11 - 480 ohm field, close enough
--
Ron Ramirez
Ferdinand IN
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Messages In This Thread
Philco 37-660 speaker - by Ronin61 - 04-23-2013, 01:45 AM
RE: Philco 37-660 speaker - by Ron Ramirez - 04-23-2013, 05:34 AM
RE: Philco 37-660 speaker - by Ronin61 - 04-23-2013, 10:24 AM



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  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration