Henry Schluter, born in 1889, died in 1971.
When becoming chief-tuner at the Deagan company in 1925, he designed the first vibraphone with aluminum bars and a damper-system (by Mervin Jones) Thisparticular model 145 was introduced in 1927. Later in 1948 he became the chief-designer at the Deagan company, and stayed untill his dead in 1971.
It looks like a xylophone that has metal bars instead of wooden. The speciality of the vibraphone - also called vibes - is its vibration sound. This vibrato is made by metal disks that periodically open and close the tubular-resonators, so that a vibrato results. They are animated by a electric motor. Ancestors of the vibraphone did not have this vibrato-effect. They called metalophones. Today their name is 'metallophone'. The metal bars have a longer sound than wooden bars, they have to be damped. This can be done by the player's mallets or hand. But usually the notes are damped with a pedal. The normal range of the vibraphone is f4 to f7 (f to f'''). Some special vibes have a range of c4 to c8 (c to c''''), because some composers demand such a range.
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