COMPARISION: Off axis response

Below is the overlayed plot of the off axis response of the BG28 driver with a 14.5" wide board baffle from 300Hz to 20KHz. The baffle had protruding mounting features on the rear, and was judged to have caused some frequency response anomalies. Never-the-less, the overall picture that these plots present is one of a driver that should be listened to on axis. The high frequency fall off is precipitious.

Microphone at 1 meters distance and a height of 1 meter.
MLS: 64 averages, 1024/4096 point FFT, Half-Bingham window.
1/12 octave smoothing - Amplitude Axis @ 6dB per division.

Below is the same plot as above, but with an expanded frequency scale, from 3000Hz to 20KHz, and a compressed amplitude scale, at 12dB per divsion. This is in order to be able to better discern the high frequency dispersion characteristics of the driver.


Microphone at 1 meters distance and a height of 1 meter.
MLS: 64 averages, 1024/4096 point FFT, Half-Bingham window.
1/12 octave smoothing - Amplitude Axis @ 12dB per division.


Low Frequencies in High Resolution.
The Carver 60" Comparison.
The RD75 Dipole Baffle Study - Table of Contents.
Acoustic Line Source Research - Table of Contents.