1960s 1961 Rear Speaker Details

[Clewisiii]

What was the OHM and size of the 1961 Rear Speaker.

The master parts book says the rear speaker is same from 47-62 then changes from 63 on.

Neither the parts book or service manual actually say what the speaker size is.

I hope you say 6x9 10 OHM.  But I think it is 8 OHM. And one place said it was a 5x7.

[Cadillac Jack 82]

8 is the minimum in order for you not to fry your radio.  They repop the speakers if you need one.

[Cadillac Jack 82]

https://www.smelectrotech.com/

[klinebau]

The older speakers and head unit used a common ground.  I don't know all the ins and outs, but I don't think you can just use a modern speaker that matches the ohm rating.  I am sure someone here will post more details about what is and isn't possible.

EDIT:  After a little research, I think the issue is that you cannot used a modern radio with a common ground, so maybe speakers are ok.