As describe in the README_USAGE.TXT :
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- Buzzer sound output -
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You can connect a piezo or a magnetic buzzer to the JB jumper position.
A transistor is needed for the magnetic version.
The sound output can be disabled or enabled into the selector settings.
(Note : Please remove these old sound mod using directly the floppy step signal, they are producing reliability problems...)
Is that "Buzzer 30V 13x2.5mm Piezo Passive Buzzer" good for the gotek connecting to the JB position WITHOUT transistor ?

http://www.ebay.com/itm/10pcs-SMD-Buzze ... Sw4CFY0jc5

If this item was not good, do you have a reference that i could buy without needing a resistance ?

THX for your response.