Speaker can not be placed on a
speaker stand
Tightening knob is turned too
tight
Loosen tightening knob
Stand not suitable Measure stand top diameter, this
should be around 33-36 mm for
optimal placement. Use another
speaker stand if needed.
Buzzing noise coming from the
speaker
Ungrounded power connection Connect the speaker to a
grounded outlet
Ungrounded signal source Connect the signal source to a
grounded outlet
Interference from power cables Avoid placing power and signal
cables in a parallel structure
Bad cables Remove the cable or
increase/decrease the volume of
the speaker. If the noise is gone,
the problem is somewhere in
your signal chain.