Shure MX391 - RFI Filtering; Microphone Placement; Permanent Installation

Shure Incorporated
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Cartridge Polar Patterns
RFI Filtering
Important: Microphones must be used with the RK100PK or RK202PK plate-mounted preamp to optimize RF immunity.
Microphone Placement
For best low-frequency response and rejection of background noise, place the microphone on a large, flat surface, such as a
floor, table, or lectern.
To reduce reverberance, avoid reflective surfaces above or to the side of the microphone, such as beveled sides of pulpits or
overhanging shelves.
Permanent Installation
Remove grille.
Place housing in position and mark location of screw holes and bottom cable exit hole.
Drill starter hole for each screw and a 1/2 in. bottom exit hole for the mic cable.
Insert 4-pin mini-connector and cable through cable hole.