Loudspeaker measurements vary from manufacturer to manufacturer and even review publications. Our goal is to provide a consistent and comprehensive testing methodology of objectively measuring loudspeaker performance to allow more meaningful direct to direct comparisons and to also get a more complete picture of performance. Our measurement protocol covers: On-Axis Frequency Response Sensitivity Listening Window Response Polar Response Impedance & Electrical Phase Discuss "Loudspeaker Measurement Standard: Our Procedure for Objectively Analyzing Speaker Performance" here. Let us know what you think. Audioholics Loudspeaker Measurement Standard