Exploring the Lightest Key Action in Pianos
Understanding Key Action and Weight
When discussing pianos, the concept of key action is often brought up, especially in terms of light action. The key action in a piano is the mechanism that enables you to depress and sound the notes. But interestingly enough, the phrase “press” up doesn’t quite make sense in the context of piano mechanics. Once you press down, gravity takes over, and the key returns to its resting position. However, the weight of the key when pressing down and returning is crucial for a smooth and responsive playing experience.
General Expectations and Variations
One of the fascinating aspects of piano action is the general expectation. A grand piano, for instance, is typically expected to require about 45 grams of force to depress the key. However, this can vary based on the manufacturer and specific model. Dampers, which control the release of sound when a key is lifted, can affect this weight. In some cases, dampers are timed to lift early, making the key feel lighter. Adjustments can be made to change this behavior, with some tuners able to delay the dampers' lift.
In comparison, a spinet or small upright piano might have an action as light as 40 grams. This lighter weight can offer a more sensitive and responsive playing experience, making it ideal for those new to the piano or for certain playing styles. The low weight helps the keys return quickly to their rest position, contributing to a more nimble touch.
Adjustments and Their Effects
Various factors, including the addition of lead weights, can be used to tweak the key weight. For instance, on our specific piano, adding just two lead weights can drop the overall key weight from 46 grams to 42 grams. This adjustment not only impacts the weight but also affects the piano's response time, or how quickly the key returns to its resting position. Reducing the weight can make playing more comfortable and responsive, but it’s important to find a balance that suits the player's needs.
Interestingly, a piano that feels differently to the player can be quite subjective. Even if the actual weight is the same, individual perception plays a significant role. Our 20-year-old Yamaha, for example, feels heavier to my wife than some other pianos she’s played. This discrepancy can be attributed to other factors such as the craftsmanship of the piano, the acoustics, or simply familiarization with a particular instrument.
Conclusion
Choosing the right piano with the appropriate key action is a personal choice, influenced by the player's preferences and the intended use of the instrument. Whether you prefer a lighter action for greater sensitivity or a slightly heavier action for better control, understanding the nuances of key action can help you make an informed decision. The key is not just in the action itself but also in how it feels and responds to your touch.