Distortion in loudspeakers is shown to be nearly proportional to power output. Typically a plot of log distortion versus dB output shows a 1:1 relation. In one sample ooudspeaker the slope of the distortion versus output curve was in excess of 45 degrees. Comparison is shown between a direct radiator of 20-cm (8-in) diameter, one of 30-cm (12-in) diameter, and a high-efficiencØ horn of 0.45 m/3 (16 ft/3). At 95-dB sound pressure level output measured at 61 cm (2 ft) the 12-cm cone showed 18% (-15 dB ref 100%), the 30-cm cone showed 6% (-25 dB ref 100%), and the horn showed 0.8% (-42 dB ref 100%). Each curve of distortion versus output shows a slope of at least 45 degrees.
Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!
This paper costs $33 for non-members and is free for AES members and E-Library subscribers.