Vacuum Measurement Kit
Electro-acoustical transducers, such as loudspeaker drivers, micro-speakers, headphones and microphones, are measured in vacuum to identify properties and the parameters of the electro-mechanical system directly while the effect of air is eliminated. The Vacuum Measurement Kit meets the special requirements in the loudspeaker application, such as a flat vessel to accommodate loudspeaker drive units of large diameter, air sealed terminals to feed the electrical stimulus and a planar glass plate for laser scanning.
- Get precise mechanical parameters
- Separate mechanical system from acoustical system
- Investigate impact of radiation impedance and air load
- Scanning of mechanical vibration
- Remove acoustical damping
Specification
Standard Measurements requiring a vacuum chamber
- Small signal lumped parameters
- Transducer nonlinearities (curve shape)
- Single-valued nonlinear parameters
- Voice coil displacement
- Scanning mechanical vibration
- Vibration analysis
- DC displacement – dynamic offset the voice coil
- Magnitude and phase response
- Area of radiation
- Harmonic distortion
- Intermodulation distortion
- Multi-tone distortion
- Compression of fundamental components
