POLAR PATTERN SELECTOR
The MA-37 features a unique mechanical approach, developed by RCA in the 1930s and adapted
by Sony, to achieving a choice between cardioid and omnidirectional polar patterns – an adjustable
tuned acoustic chamber. To change the pattern selection from cardioid (C) to omni (O), insert a
small flat-head screwdriver into the slot and rotate clockwise approximately 90 degrees. It is
perfectly acceptable to stop anywhere between C and O in order to achieve a hyper-cardioid polar
pattern.
BASS CUT SWITCH
The bass cut switch, also known as a hi-pass filter, is
located on the power supply, offering three
options:
at (M), 100Hz (V1) and 200Hz (V2). As the MA-37 has an extended low frequency
response, the bass cut is useful in cleaning up the bottom end. V1 is useful for instruments such
as acoustic guitar. V2 is useful for instruments such as a tambourine or shaker. Either V1 or V2
can be useful for recording vocals, depending on the voice and desired result.
