2) Microphone Controls
REFERENCE
8
PATTERN SELECT CONTROL, REF-SILVER (continued)
Turning the screw clockwise closes the vent (omni) while turning
counterclockwise opens it (cardioid). These patterns are marked on the control
port as above. The REF-S achieves its directional response by subtracting sound
that enters from the rear of the capsule, from the sound entering the front of the
capsule. This allows us to tune a “null” value towards the rear, the response to
sounds arriving from the rear may be reduced by 20 dB or more from response
to sounds arriving from other directions.
The REF-S allows the traditional omni and cardioid patterns to be selected
repeatedly, and with some care it is possible to set the pattern control vent to
produce “WIDE” or “SUBCARDIOID” patterns. However, the range from omni (full
clockwise) to cardioid (counterclockwise 90 degrees to the stop) is not linear;
subcardioid is achieved with the adjustment vent just slightly counterclockwise
from omni. Results for intermediate patterns are not easily repeatable from
microphone to microphone or if the adjustment is moved.
OMNI
CARDIOID
Adjust the REF-S microphone
pattern ONLY when the microphone
is disconnected and powered OFF.
CAUTION
