48. A Ground Plane Measurement Comparison Between Two Floor-Standing Loudspeaker Systems Compared: A Conventional Three-Way Studio Monitor vs. A Ground-Plane Constant Beamwidth Transducer (CBT) Line Array

presented at AES Convention: 141 Paper Number:279
Publication Date: 2016-09-06

This paper compares two different types of floor-standing loudspeaker systems. Both were measured over an acoustically reflective hard surface in a large space. The first is a high-performance conventional three-way 12”-woofer studio monitor and the second is a ground-plane circular-arc CBT line array loudspeaker. Measurements included direct-field frequency responses in front of the systems at 20 grid locations ranging over different distances/heights and response vs. distance at seated and standing heights. Horizontal off-axis and near-field responses were also gathered along with ceiling illumination responses at several launch angles. The measurements reveal that the CBT system has vastly more even coverage at all these locations compared to the three-way monitor and in addition eliminates the detrimental effects of floor bounce.

This study highlights the key differences in performance, illustrating how the Loudspeaker Systems Compared can affect auditory experiences in various environments.

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Keele, Jr., D.B. (Don); 2016; A Ground Plane Measurement Comparison Between Two Floor-Standing Loudspeaker Systems: A Conventional Three-Way Studio Monitor vs. A Ground-Plane Constant Beamwidth Transducer (CBT) Line Array [PDF]; DBK Associates and Labs, Bloomington, IN, USA; Paper 279; Available from: https://aes2.org/publications/elibrary-page/?id=18379