Techniques
Leadless Keyboard
![JFM_8510.JPG](https://static.wixstatic.com/media/9f1f2c_743014e024f64904abfe22853e01e0da~mv2_d_4288_2848_s_4_2.jpg/v1/crop/x_0,y_100,w_4288,h_2458/fill/w_429,h_246,al_c,q_80,usm_0.66_1.00_0.01/JFM_8510_JPG.webp)
This allows us to completely dispense with toxic lead in the piano. Instead of lead we use a high-density plastic for the balance weights of the keys. Weighing is done by removing weight from this plastic.
Advantages are apparent:
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no more toxic lead in the piano
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no blooming of lead
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no hanging or bursting keys
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no weakening of the keys by drilling
Membrator System
![Membrator-System.jpg](https://static.wixstatic.com/media/9f1f2c_75c4d4088e0a440498fba691beb4b2a3~mv2.jpg/v1/crop/x_0,y_117,w_805,h_483/fill/w_428,h_257,al_c,q_80,usm_0.66_1.00_0.01/Membrator-System.webp)
Improves the resonance characteristics of the soundboard and leads to the perfection of the typical, transparent Seiler sound.
Tone Volume Stabilizer
![_DSF6159.jpg](https://static.wixstatic.com/media/9f1f2c_5f34cc5dd480433a8544ec7c5fc79490~mv2_d_2048_1536_s_2.jpg/v1/crop/x_0,y_153,w_2048,h_1230/fill/w_428,h_257,al_c,q_80,usm_0.66_1.00_0.01/_DSF6159.webp)
Guarantees permanent additional sound volume and projection due to improved elasticity and tension of the soundboard.
SMR (Super-Magnet-Repetition)
Ensures an unsurpassed repetition speed for uprights. Two magnets, which repel each other, are built into a conventional action. So the jack returns more quickly under the hammer but and is ready again for the next keystroke.No wearing off, no maintenance.
![Mechanik_SMR.jpg](https://static.wixstatic.com/media/9f1f2c_524be8eebe3340278aea1dfe24e78a92~mv2.jpg/v1/crop/x_0,y_45,w_629,h_799/fill/w_429,h_545,al_c,q_80,usm_0.66_1.00_0.01/Mechanik_SMR.webp)
Frenator System
![web_passion_5.jpg](https://static.wixstatic.com/media/9f1f2c_d323f0cfcfea41cab37aa8cbf14e810b~mv2.jpg/v1/crop/x_0,y_75,w_1000,h_600/fill/w_428,h_257,al_c,q_80,usm_0.66_1.00_0.01/web_passion_5.webp)
Avoids unintended closing of the fallboard and thus improves comfort and safety.