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    Ambrose House
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    Preston, Lancashire PR5 2NE
    England

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    Londonderry, County Londonderry BT48 6PL
    Northern Ireland

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    36 New Yatt Road
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    Witney, Oxfordshire ox28 1nz
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    34 Engate Street
    London
    Lewisham, London SE13 7HA
    England

    Robert Morley & Company Limited, established 1881

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    24 Coronet Stree
    Haggerston
    Bridport Place, London N16HD
    England

    Thornhill Pianos is a family business selling and

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Did You Know Piano Facts

What is the difference between Overdamping and Underdamping?

Overdamping is a system whereby the piano damping mechanism (the bit that shuts the piano up) is situated above the hammer strike line. Underdamping is where the piano dampers are placed below the hammer strike line. Advantages and disadvantages. Overdamping. Imagine an elastic band three-foot long, you twang it and then put your finger near to the end of the elastic band, to stop it vibrating. This is overdamping

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Take the same elastic band and place your finger near the centre to stop it from vibrating this is underdamping, which of course is more efficient. Overdamping is controlled by gravity where as underdamping is controlled by adjustable springs so on the whole underdamping is far more efficient than overdamping. However, there is one disadvantage with underdamping. That is, if the dampers are incorrectly aligned to the nodes and antinodes of the vibrating string this will result in, the dampers when they come in contact with the string, emphasising certain harmonics on the piano, thus giving you a harmonic ring, this is more common on small uprights and small grandís as the margin of tolerance decreases as the piano becomes smaller.