Dayton Audio PS180-8 6-1 User Manual
Introduction
Klippel Non-Linear Test Results
LSI (Large Signal Identification)
Model #: PS180-8
Introduction
Large Signal Modeling
At higher amplitudes, loudspeakers produce substantial distortion in the output signal, generated by nonlinear ties inherent in
the transducer. The dominant nonlinear distortions are predictable and are closely related with the general principle,
particular design, material properties and assembling techniques of the loudspeaker. The Klippel Distortion Analyzer
combines nonlinear measurement techniques with computer simulation to explain the generation of the nonlinear distortions,
to identify their physical causes and to give suggestion for constructional improvements. Better insight into the
nonlinear mechanisms makes it possible to further optimize the transducer in respect with sound quality, weight, size and cost.
Nonlinear Characteristics
The dominant nonlinearities are modelled by variable parameters such as
Bl(x)
instantaneous electro-dynamic coupling factor (force factor of the motor) defined by the
integral of the magnetic flux density B over voice coil length l as a function of
displacement
KMS(x)
mechanical stiffness of driver suspension a function of displacement
LE(i)
voice coil inductance as a function of input current (describes nonlinear permeability of
the iron path)
LE(x)
voice coil inductance as a function of displacement