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Quality control

In the sound of each Liuto forte nothing is allowed to chance. Customers can be totally confident that the instrument they commission will deviate in no sense from the quality of the demonstration instrument.

An analysis undertaken in 1999 by the Zwota Institute for Musical Instrument Building (www.ifm-zwota.de) was able to show almost identical resonances (resonance peaks) in three individual liuti forti of the same model. Below you can view the frequency response of one of these lutes (Liuto forte in D min, Guenter Mark 1998) at various frequencies, and then compare it with the frequency response pattern of an historical lute then in the author’s possession (Sebastian Schelle, Nuremberg 1744).

Modal analysis Liuto forte

Liuto forte in d (double headed) 15 single strings, Günter Mark 1998


Modal analysis historical lute

13 course Baroque lute, Sebastian Schelle, 1744, Germanisches Nationalmuseum Nürnberg


Liuto forte 107Hz    
Liuto forte 258Hz   Historical lute 269Hz
Modalanalyse   Modalanalyse
Liuto forte 368Hz   Historical lute 318Hz
Modalanalyse   Modalanalyse
Liuto forte 421Hz   Historical lute 433Hz
Modalanalyse   Modalanalyse
Liuto forte 610Hz   Historical lute 673Hz
Modalanalyse   Modalanalyse
Liuto forte 710Hz   Historical lute 796Hz
Modalanalyse   Modalanalyse