[Ron Ramirez]

The original speaker is H-24, part no. 36-1224. 1140 ohm field coil.

This information and more is available in a free download from the Phorum - look for "Philco Speakers" at:
http://www.philcoradio.com/phorum/showth...hp?tid=215

Actually, you probably won't have a lot of trouble finding a speaker. The majority of 1933-38 Philco sets using 10-1/2 inch H series speakers have 1140 ohm fields. You may have to change the audio output transformer as the one you find may have a push-pull output and you need a single ended output for the 37-630 with a primary impredance of 7100 ohms to match a 1.25 ohm voice coil.