While I'm in the process of replacing the headliner in my '68 C-150H, I noticed that my speaker could use replacement.
That looks like the speaker in my plane -- oval shaped, about 6 x 8 inches.
The Quam listed in the chiefaicraft site is round -- 4-inches diameter.
Anyone know of an oval Quam speaker that would fit in my plane. I assume it would be necessary to use an adapter plate of some sort...