Shure Microflex MX300 Series User Manual page 2

SECURING MICROPHONES TO A MOUNTING
SURFACE (MX392, MX393 Figure 1)
1. Remove the Phillips screw from the bottom center of the
microphone base, then remove the retainer.
2. Using a pointed tool or screwdriver, carefully lift off the grille
and foam screen.
3. Place the microphone in the desired location and, using a
pencil, trace the location of the screw holes through the
microphone. Then drill a starter hole for each supplied screw.
Note: If using rear side-exit cable option, only drill the
two outer holes. If re-routing for cable bottom exit,
(MX392 only), drill for all three holes.
4. Cover the rear two foam pads on the microphone with tape
so that it slides more easily across the mounting surface.
5. Install the two supplied screws in the desired location on the
mounting surface.
6. Reinstall the grille, foam screen, and retainer, and secure
them with the Phillips screw.
7. Using a knife or a razor blade, cut a slot into each of the two
foam pads covering the slots below the screw holes on the
bottom of the microphone.
8. Position the microphone so that the screw holes fit over the
screw heads. Then slide the microphone so that the screw
heads are in the slots in the microphone base.
PAINTING THE MICROPHONE (Figure 2)
1. Remove the Phillips screw from the bottom of the micro-
phone base, then remove the retainer.
2. Lift off the grille and foam screen. Then separate the foam
screen from the grille. If using an MX393 model, disconnect
the TA3F miniature 3-pin connector.
3. If using an MX392 model, disconnect the wire leads from the
screw terminals, remove the rubber strain relief, and unscrew
the cable post from the nut plate to disconnect the cable.
Remove the nut plate.
4. Place the supplied plastic paint shield over the exposed cir-
cuit board.
5. Place the supplied adhesive masking strip over the switch
panel on the front of the base.
6. Cover the connector opening on the microphone base with
the supplied round rubber plug.
7. Cleanse the surfaces to be painted with denatured alcohol or
naphtha.
8. Carefully spray paint the microphone base and grille the
desired color. To avoid filling grille holes, apply paint in a thin
layer. Allow paint to dry thoroughly before reinstalling the
grille and foam screen.
9. If using an MX392 model, thread the cable through the base
and reattach the cable post to the nut plate. Re-insert the rub-
ber strain relief back into the cable exit hole. Reconnect the
wire leads to the screw terminals.
10. Use fine sandpaper to remove any paint that may have
adhered to the bottom edges of the grille.
IMPORTANT: For proper shielding, maintain electrical
continuity between the grille and the metal base.
11. Reinstall the retainer, grille, foam screen, and Phillips screw.
CHANGING THE MICROPHONE CARTRIDGE (Figure 3)
1. Remove the Phillips screw from the bottom of the micro-
phone base, then remove the retainer.
2. Remove the grille and foam screen by carefully inserting a
pointed tool into the edge of the grille and prying it open.
3. Remove the Phillips screw from the cartridge retaining
bracket, then remove the bracket.
4. Use your fingers to unscrew the cartridge from the micro-
phone assembly.
5. Use your fingers to screw the replacement cartridge into
place.
6. Reinstall the cartridge retaining bracket and secure it with the
Phillips screw.
7. Reinstall the grille, foam screen, and retainer, then secure
them with the Phillips screw.
RE-ROUTING CABLE FOR BOTTOM EXIT
(Figure 4, MX392 models only)
1. Remove the center Phillips screw from the bottom of the
microphone base, then remove the retainer.
2. Using a pointed tool or screwdriver, carefully lift off the grille
and foam screen.
3. Disconnect the wire leads from the screw terminals on the
microphone printed circuit board.
4. Remove the rubber strain relief from the outside of the
microphone.
5. Unscrew the cable post from the bracket and remove the
cable from the microphone.
6. Insert the cable through the center hole, starting from the
bottom surface of the microphone base.
7. Thread the cable post through the hole, fasten it tightly to the
plate.
8. If desired, the rubber strain relief can be reattached to the
cable post or removed from the cable before fastening the
cable post to the plate.
9. Connect the wire leads to the screw terminals on the
microphone circuit board.
10. Insert the supplied round rubber plug in the unused cable exit
hole.
11. Reinstall the grille, foam screen and retainer, and secure
them with the Phillips screw.
12. Insert the bottom exit cable through drilled hole on the table.
Secure the microphone to the mounting surface. Refer to the
"Securing Microphones to a Mounting Surface MX392".
INTERNAL DIP SWITCH FUNCTIONS
All MX392 and MX393 models have internal DIP switches that al-
low the user to change the behavior of the microphone On/Off
switch. To gain access to the logic terminals, remove the grille re-
tainer screw, the grille retainer, foam screen, and grille, as shown
in Figure 2.
2
(FIGURE 5)