In Dopyera's opinion, the cost of manufacture had priced the resonator guitar beyond the reach of many players. The Dobro was louder than the tricone and cheaper to produce.

The Dobro company described this as a bowl shaped resonator.

Unlike his earlier tricone design, which had three ganged inward-facing resonator cones, the Dobro had a single outward-facing cone, with its concave surface facing up. The Dobro was the third resonator guitar design by John Dopyera, the inventor of the resonator guitar, but the second to enter production. Dobro was, during this period, a competitor of National. An early company motto was 'Dobro means good in any language.' In 1930, the Dobro company name was changed to the 'Dobro Corporation, Ltd.', with additional capital provided by Louis and Robert Dopyera. Dobro is both a contraction of 'Dopyera brothers' and a word meaning 'good' in their native Slovak, but also in many Slavic languages. National continued operating under Beauchamp, Barth et al. In mid-1929, Dopyera left the National company to start the 'Dobro Manufacturing Company' along with his brothers Rudy and Ed, and Vic Smith. Dopyera built an ampliphonic (or 'resonator') for Beauchamp, which was patented in December 1929. This information allows us to show you personalized advertisements thanks to which Audiofanzine is financed.The roots of Dobro story can be traced to the 1920s when Slovak immigrant and instrument repairman/inventor John Dopyera and musician George Beauchamp were searching for more volume for his guitars. This data allows us to understand the use that our visitors make of our website in an attempt to improve it.

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Gibson dobros for sale