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• Voice coil offset in mm
• Stiffness asymmetry in %
• Results comparable to R&D System
• Root cause information for diagnostics and process control
• Ensure maximum output and reliability
• Ensure consistency of production
• Ultra fast testing at physical limit
• No additional sensors required (based on V,I)

The QC Motor + Suspension Check is a unique tool for high-speed  identification of nonlinear driver parameters on the production line. Based on patented KLIPPEL technology, effective linear and nonlinear parameters (Bl(x) and K_ms(x)) are identified to derive meaningful single value parameters like voice coil offset and suspension asymmetry. This provides valuable information for taking immediate action to fix the causes of loudspeaker distortion.
The driver under test may be operated in free air as well as in a sealed or vented enclosures, giving additional enclosure parameters (f_b, Q_b). Neither microphones nor mechanical sensors (lasers) are required, as all information is provided by the electrical input current, making the measurement immune to ambient noise.