Larson Davis SoundAdvisor 831C Reference Manual page 220

A.9.5 Frequency Response for 831C Low Noise Microphone Set (831C-LOWN)
The 831C-LOWN mic set uses an extension cable to
connect to the 378A04 Low Noise Microphone and
Preamplifier combination. Because of this, the
directional response characteristics don't include the
FIGURE A-56 831C With LOWN Mic Set Directional Response, Referenced to Free-Field Response
FIGURE A-57 831C With LOWN Mic Set Directional Response, Referenced to Free-Field Response
SoundAdvisor Model 831C
case reflections often shown with other microphone
setups.
A-56