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The weight of a piano keyboard has always been influenced by various factors, with players paying close attention to the brand. Testing of this Kawai piano revealed a significant imbalance between key feel and weight. Selecting the optimal playing weight range suitable for learners (five-year-olds) was the core strategy for this tuning adjustment.
钢琴键盘之重量历来受到各种因素的影响，其中弹奏者的密切关注度都说和品牌有关系。这架卡瓦依钢琴经过测试后发现琴键的触感和重量数据严重失调，选择适合学习者（五岁琴童）的弹奏重量最佳范围乃是此次调音调整的核心策略。
Specific data on the weight of piano keys can be found for each brand, including key material, weight design, key length, and thickness. The standard design weight of grand piano keys is usually slightly heavier than that of upright piano keys, depending on the model and brand. While the key weight is typically between 50-70 grams, the actual weight data found in actual testing is between 40-60 grams. (This does not conform to the standard.)
各种品牌可具体查询到关于琴键重量的数据，包括琴键的材料、配重设计、琴键的长度和厚度等。三角钢琴的标准设计琴键重量通常略重于立式钢琴，这主要取决于琴的型号和品牌；但琴键重量通常在50-70克之间，可实际测试中查询到重量的数据确是40-60克之间。（与标准不符）
The standard factory key weight for Steinway pianos ranges from 50 to 56 grams, with videos using professional testing instruments showing an average key weight of around 52 grams. Master pianist Horowitz, for example, would have his piano tuned by a technician to around 40 grams, with a lighter touch. 施坦威钢琴的出厂标准琴键重量的平均weight range在50-56克区间，其中专业测试测量仪器的视频均显示平均琴键在52 克左右。钢琴大师霍洛维茨的专属钢琴，他会要求technician 把钢琴调到40 克左右，以及较浅的触键。
The weight of piano keys varies depending on the type of piano and its manufacturing process, but generally speaking, the playing requirements of learners and performers vary greatly. Considering that this Kawai piano is for a five-year-old child, the key weight is set at around 52 grams, which is appropriate. 钢琴琴键的重量因琴的类型和制造工艺而异，但通常来说学习者和演奏者的弹奏要求差别之大是毋容置疑的。考虑到此架卡瓦依钢琴是一位五岁的琴童，琴键的重量设定在 52克左右比较合适。
After adjusting the system and keys, a crucial step is to achieve a uniform touch. To ensure that every player, including pianists and young learners, experiences the same rebound force, I adjust the weight note by note. The test standard requires that the key fully sinks and does not float, with resistance at its maximum upon contact and returning to its original position after adjustment. 经过系统和琴键的调整，一个重要的步骤就是触键平均。为了让每一位演奏者包括钢琴家和琴童可以感受到同样的回弹力量，我会一个一个音利用砝码调整重量，测试标准要求琴键完全下沉且不上浮，琴键的阻力在手指触碰时是最大的并达到调整完后恢复原位。
I believe poor maintenance is a major contributing factor to uneven piano keyboard weight. The perceived weight of many pianos, both new and old, is influenced by both psychological factors and, more importantly, maintenance issues. Years of piano learning have taught me that if you imagine a keyboard that's heavy, sluggish, or "heavy," you need a professional piano tuner with experience to master the process.
New York, 2025