I thought I'd post a few pics of the 30 inch Martin recording bell. These images have not been "photo-shopped"-they are the real deal. Apparently Martin offered these big bells with their tubas on request into the 1930s. This bell came from a 1935 top-action Martin in my collection while the tuba in the photos is a 1940 model.
How does it sound? Not radically different from a standard 24 inch Martin recording bell, although I've always felt that the 30 inch bell lowered the overall pitch somewhat. Not that I've used it very often since it's a bear to balance, (although the attention it gets makes it almost worth it)!
I seem to have an "American Gothic" expression in the first photo. The second shot shows the "preferred conductor's view", (the bell could come in handy at that!).
[






