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Action Regulation

Have you noticed that your piano’s keys respond inconsistently? Perhaps some keys require different amounts of pressure than others, or you find it difficult to achieve certain dynamic levels which were once possible from the instrument. Despite routine tunings, the piano lacks the predictable, uniform touch that you recall it having years ago. If so, your piano may benefit from regulation.

Regulation is the standard maintenance procedure whereby mechanical adjustments are made to ensure optimal performance and responsiveness from your piano.

The piano action is a complex system of levers comprised of thousands of moving parts, designed to efficiently transfer energy from each key to its respective strings. Many of the action components incorporate natural materials which settle, compress, expand, and contract with time, use, and weather fluctuations. These dimensional changes negatively affect the responsiveness, efficiency, and dynamic ability of the piano, all of which can be improved through regulation.

A piano in need of regulation can become an obstacle for a pianist, whether they realize it or not. It can impede a student’s learning process, introduce unnecessary aggravation, or frustrate the advanced pianist’s ability to control the instrument. No amount of practice can compensate for a poorly maintained action. Unless adjustments are made, the piano will continue to fall further out of regulation, and become even more difficult to play.

On the other hand, a well-regulated piano responds smoothly and predictably from key-to-key, allows for ideal playability, repetition, and dynamic control, and facilitates a seamless connection between the pianist and the instrument. With regular maintenance, including regulation, a piano has the potential to be the perfect tool for musical expression.

Model showing one note in an upright piano action

(Fig. 1) Model showing one note in an upright piano action

Regulation typically refers to regulation of the keyboard action. Please note, the damper (back action) and pedal systems may also require regulation. For “tone regulating,” please see information here.

Frequently Asked Questions

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