Dear Jimbo, gs spoken here, and mid-60s Buick caregivers who like to hear the music,
Does anyone know the size of the speaker in the dash? Mine is missing. 65 sport coupe.
It is either a 5 or 6 inch round one.
Yes it is. For some reason, Custom Autosound has the speaker size for our cars as 4"x10" and I ended up having to resize one of their conversions back in the 1990s! It wasn't pretty!
Here are some pictures of Biquette's original speaker with some rulers to show the dimensions. Here is the view of the back:
Here is a side view:
Cheers, Edouard