Basses, can you change the sound and properties by construction?

- Are there any constructions known that improve the low frequencies or directness of sound in LA accordions? Special woods used for reed chambers? larger reed chambers, acoustic constructions influencing resonance etc?

- Found this on a site about Steirische Harmonikas: Quote: "The Helikon accordion is named after the Helicon "Tuba", which evolved from ram horn trumpets, first used thousands of years ago. It is the Helikon bass reeds which give it a distinctive "Tuba" sound to the bass notes. This is because the bass reeds are much longer and wider than "normal" bass reeds. They reproduce low pitched tones like a Tuba. Quite often the low Helikon reeds are fitted to a single duraluminium plate. These reeds can be up to 1 inch longer than standard bass reeds. First used in Styrian diatonic accordions, these reeds are now found in piano accordions."

- And a highlight on a Baldoni accordion feature : "HELIKON double bass reeds mounted on a chambered baffle reed block", together with this picture:



PS - is this the same company known for Deutsche Harmonikas from the past?: http://www.monarchaccordions.com/

Nout