2. Audix
  3. M55

Audix M55 User guide

  • Hello! I'm here to assist you with the AUDIX M55 Hanging Ceiling Microphone installation. I've read through the installation guide and understand the steps for mounting, wiring, adjustments, and seismic restraints. Feel free to ask me any questions you have about setting up your M55 microphone.
  • What size hole is needed in the ceiling tile for installation?
    What type of wire is recommended for the M55?
    How do you adjust the height of the microphone?
    How do you release the cable in the seismic restraint system?
M55
HANGING CEILING MICROPHONE
Installation Guide
M55 EXPLODED VIEW
M55 JUNCTION BOX ASSEMBLY
M55
Ceiling tile with 5/8” hole
Adjustment nut
tightens by hand
Bottom view of junction box
JBM55 plenum rated box
Male & female
phoenix connectors
Brass strain relief
for outer cable
Slotted mounting nut
• Drill 5/8 inch hole in the ceiling tile.
• Open JBM55 box lid and place box on top of
5/8 inch hole in the ceiling tile. (See #1)
• Insert M55 threaded ceiling mount through
ceiling tile and into the JBM55 box
• Securely tighten the knurled nut.
(See #2)
• Insert plenum wire (Belden 9451P or 82761
or equivalent through strain relief (See #3)
and terminate to mating phoenix connector.
(See #4 and #5)
• Tighten plenum cable strain relief and close
lid of JBM55 box. (See #5)
• Loosen M55 knurled nut, adjust cable to
approximate desired length, and tighten nut.
(See #6)
• Tighten the plenum cable strain relief nut and
arrange excess M55 wire in box and close lid.
(see #7)
• Fine adjustments to microphone height can be
made easily from below ceiling by loosening
the M55 knurled nut, lengthening/shortening
wire and retightening knurled nut. (See #8)
INSTALLATION AND WIRING INSTRUCTIONS
1. Open lid of JBM55 box
and place on top of ceiling
tile drilled hole.
4. Wiring:
1 = Ground
2 = Blue (+)
3 = Yellow (-)
6. Loosen M55 knurled nut
(above), adjust cable to
approximate desired length,
and tighten nut.
2. Insert ceiling mount
through ceiling tile hole, and
into JBM55 box then tighten
the knurled nut.
3. Insert plenum wire
through strain relief nut,
then connect to the
Phoenix terminal.
Recommended cable:
Belden 9451P - .124” O.D. or
Belden 82761 - .116” O.D.
5. Connect Phoenix terminals.
7. Tighten the strain relief
nut. Arrange excess wire in
box and close lid.
8. For  nal adjustment,
loosen knurled nut,
adjust cable length,
and tighten nut.
3
3
2121
SEISMIC RESTRAINT INSTRUCTIONS
Seismic Restraint Diagram
Wrap the cable through
fastening point (beam,
eyebolt).Next, slip the cable
through the top of cable stay
barrel pulling excess cable
until taut.
To loosen or disassemble
cable, depress the cable
release pin and pull cable to
desired length.
Plenum rated box
Plenum rated cable
Cable
Cable stay barrel
Beam, eyebolt
or wall
Cable release pin Cable stay barrel
Push pin in
to release
Cable
/