Monday, October 4, 2010

Brief Description of Rhodes Piano

73-key stage piano
The Rhodes piano is an electromechanical instrument that uses a steel cantilever beam (the tine) as its primary tone source. There is one tine per note on the piano. The free end of the tine swings back and fourth in front of a passive magnetic pickup (again, one per note) generating an electrical signal. The sum of these signals is present at the output jack of the instrument for amplification. Similar to an acoustic piano, the tine is struck by a hammer and damped by a felt pad. A small wire (the tuning spring) wrapped around the free end of the tine adds mass and is nudged back and fourth to tune the fundamental vibrating frequency. According to the original Rhodes service manual, the tine is one leg of an asymmetrical tuning fork. The other leg (the tone bar) is longer and much more massive.

Tuning fork comparison



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