He founded the family firm in Wiesbaden - Biebrich in 1831 , and became the foremost German bassoon maker , making many improvements to the instrument .
Johann Adam Heckel ( 14 July 1812 in Adorf -- 13 April 1877 in Biebrich ) was a German instrument maker .
Johann Adam Heckel founded the family firm in Biebrich     in 1831 , and became the foremost German bassoon maker , making many improvements to the instrument .
Johann Adam Heckel ( 14 July 1812 in Adorf -- 13 April 1877 in Biebrich ) was a German instrument maker .