User manual RANE GM 9 DATASHEET

[. . . ] The GM 17 is a 17" gooseneck microphone for a banjo. This gaggle of gooseneck (geeseneck?) microphones are designed to mount inside acoustic instruments. Each microphone is a uni-directional electret condenser which can be positioned for the best sound within the instrument. It requires a special 6 volt 2-wire phantom power (T-power) supply to operate, supplied on Rane's AP 13 Acoustic Preamplifier (for which these assemblies are intended to be used). [. . . ] Like any microphone, the GM can feedback if not properly aimed relative to loudspeaker volume. The GM is a low impedance microphone intended for use with the Rane AP 13, which contain graphic equalizers to help minimize feedback as well as provide optimum tone and balance. Also see Rane Note 131, "Microphone Options for the AP 13 Acoustic Preamp. " GM 5 GM 9 GM 16 GM 17 GM 5/9/16/1 7 GOOSENECK MICROPHONES GM 5 and GM 9 Installation 1. Enlarge the hole in the body for the brass sleeve to fit into with a ½" tapered reamer if neccessary. If the instrument has a pickup, disconnect the wires from the existing jack and connect (solder) those leads to the loose set of wires protruding from the middle of the GM. Separate and insulate the connections with electrical tape. Remove the brass sleeve from the GM and glue it in place on the instument body. After the glue has dried, insert the microphone from outside the instrument and tighten by turning clockwise. The punch mark on the jack face indicates the active face of the microphone, and should be directed toward the rear of the instrument. Set the Phantom Power on the AP 13 to 6 volts. Connect a quality TRS to TRS cable from the instrument to the preamp. Set the front panel switch to TIP=PZO/ RING=MIC. Consult the owner's manual of the preamp for further instructions. Professional Audio Products Data Sheet GM 17 Installation 1. Remove the wing nut and washer from the mic bracket. Remove the resonator from the banjo if it has one. If it does, slip the GM through the flange. If the instrument has a pickup, disconnect the wires from the existing jack and connect (solder) those leads to the loose set of wires protruding from the middle of the GM. Solder, separate and insulate the connections. Slip the part of the microphone mounting bracket with the threaded stud behind two of the hoop heads that tension the banjo head. Fit the other part (attached to the gooseneck and output jack) over the threaded stud. [. . . ] Replace the strings and tune the guitar. Set the Phantom Power on the AP 13 to 6 volts. Connect a quality TRS to TRS cable from the instrument to the preamp. Set the front panel switch to TIP=PZO/RING=MIC. [. . . ]