Gibson H bracing

[Dave Bagwill]

I've heard some very good old Gibsons, the L-0 in particular, that use the H bracing shown below. If I used it I'd be tempted to add a transverse ladder brace below the bridge, to support the top and help preserve the top radius down in that lower bout.
The H was a precursor of the X, but it intrigues me a bit.
Any experience with this bracing, or any comments on the pro/con? The L-0 was a killer blues guitar.

[John Parchem]

Interesting with the lower transvers brace it is a 2 brace fan.

[Dave Bagwill]

One of Mottola's instrument, below, has a very simple bracing (even simpler than the H, but they have some things in common) plan that can, according to him, yield a world-class tone in capable luthier's hands. It's based on the Tacoma instruments.
But the sound, also according to him, was designed to be a jazzy fingerstyle sound, which is not what I would be after. I like a little more 'ring' and more ladder-braced sound. Which is why I was thinking about the transverse brace.
I have built a Mottola braced instrument, just need to finish it up. An experiment.

[John Parchem]

The Mottola guitar does not have the lateral brace under the sound hole so it is different than the Gibson. Maybe on the Gibson put in the lateral brace near the bridge and remove the tone bar.

[Dave Bagwill]

And here is the bracing supposedly used by Robert Johnson - L1
And a clip of one being played.
Clip:

[John Parchem]

The L1 bracing is very different than the drawing in the first post. The bridge in the open L1 guitar does not even sit on the braces The bracing of the L1 looks pretty beefy except that there is a good sized unbraced area around the bridge. I wonder if effectively the inside unbraced area is the main contributor of the sound; a small sound board embedded in a full scale instrument. The guitar I hear has a really tight sound.

[Herman]

Looking at this, I can imagine where Taylor got its V-Class bracing. Completely new design!... ya,ya, sure!

The other thing is, they did cut the dovetail slot right to the bottom of the neck block. Plain easy!
Herman