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Perceptual Effects of Dynamic Range Compression in Popular Music Recordings - January 2014
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Accurate Calculation of Radiation and Diffraction from Loudspeaker Enclosures at Low Frequency - June 2013
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New Measurement Techniques for Portable Listening Devices: Technical Report - October 2013
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Low-Frequency Response and Efficiency Relationships in Direct-Radiator Loudspeaker Systems

Close control of QT at low-frequency resonance is required to maintain flat response in closed-box loudspeaker systems. Increasing the midband efficiency increases electrical damping. Overdamping and loss of low-frequency output may occur unless an optimal compromise is reached among midband efficiency and electrical, mechanical, and acoustic damping.

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JAES Volume 13 Issue 1 pp. 62-64; January 1965
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