Re: 1937 115C radio speaker?

Posted by Joe Santana On 2020/4/29 10:00:06

When you take it out of its case, see if you can find the Impedance rating in ohms on the speaker. If not, you can approximate it by measuring the resistance. This video show how easy it is. You need a multimeter.https://www.youtube.com/watch?v=4Ocgo1p8Z3Y

You need the diameter.

For my car, I found an rugged outdoor speaker at a stereo repair shop. It was pancake flat and red plastic, but the impedance and diameter matched so I put some similar-looking black cloth over the front and mounted it in the case (which was now mostly empty). I did that in 1978. Still works.