First workshop open in 1978 to Lyon.
Opening of a workshop with the Fresse-on-Moselle (the Vosges) in 1981, in partnership in particular with Alain Gregoire. Very great business success of the D3 models and BD3, and their alternatives DX, BDX, Clean, D 2, BD 2…
Resale of the company and 1984 and removal with Rombas (the Moselle).
Stop of the industrial and taken again experiment of an artisanal activity and 1987 with Thionville (the Moselle). Christophe Leduc will then be noticed for his low electric with double handle separable, then for the Masterpiece models. In 1989, it deposits the international patents relating to a floating table and a rest assymetric which will characterize theLow ones, then the U-guitars.
Patent on the floating table and the rest assymetric
This device makes it possible to instument reproduce the movement of a rest of instument acoustic on an electric instrument. He does not seek to reproduce a sonority " acoustique" but simply to harmonize and enrich sonority by the instrument.
The sounding board is placed in obviously not very deep of the body. It is pinch with the bottom of the instrument and rests at the bottom of the cavity at the ends of the horns. Its frequency of resonance is thus lower than if it were stuck on all its circumference and simulates a table of size much larger.
With dimensions acute one of the rest rests directly on the body, while the part serious and supported by the table. The acute cords thus profit from a maximum duration of vibration and more one cord is located with dimensions one engraves more it acts like engine of the table, its position determining a report/ratio of lever on the table. Generally the most serious cord resting beyond the point of application of the rest on the table, its arm of lever is higher than the unit.
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