Was the best pupil of his brother Johann. He made a tour of Germany In 1802. Was selected as a teacher for Spohr by the Duke of Brunswick, patron of the latter, and soon afterward Spohr accompanied his instructor in a journey to Russia. In Spohr's autobiography he praises highly the playing of Franz Eck. Eck's wild and reckless habits prevented the success for which his talents brought him opportunities, causing him to lose, first his position in the band at Munich, and later his appointment as soloist at Court in St. Petersburg. He died m a lunatic asylum at Strasburg.