
M70
FLUSH MOUNT CEILING MIC
OVERVIEW
The M70 is an innovative flush mount condenser microphone designed for
distance miking. Features include a fully integrated preamp, an extremely
high sensitivity rating of 38 millivolts and a small footprint of only 3 inches
in diameter. The M70 applications include video conferencing, distance
learning, hospital rooms, surveillance and ambient room miking. The M70
offers a flush mount solution, easy installation and allows the microphone
to completely disappear from view without sacrificing sound quality.
The M70 capsule is housed within a patented cradle that enables the
microphone to be aimed and focused up to an angle of 45 degrees towards
the sound source. In addition, the M70 has complete immunity from RF
interference caused by cell phones and GSM devices.
The M70 terminates in a terminal block connector and is easy to install,
requiring just a 2 inch hole to be drilled with no additional tools. The M70
comes in stock white and is also available in a satin nickel finish.
M70W
FEATURES
• High output for distance miking
• Immunity from RF interference
• Miniaturized integrated preamp circuitry
MODEL VARIATIONS
M70W - White finish
M70N - Satin nickel finish
SUPPLIED ACCESSORIES
Cable - 1’ integrated mic cable terminating with a 3-pin terminal block connector (CONN170F).
Connector - The mating 3-pin terminal block connector (CONN170M) is also
provided for easy solderless connection.
JBM70 - UL Rated, Metal Plenum Junction Box with 1.56 mm / .063 in
seismic & fire cable restraint.
• 12 mm gold vapor diaphragm
• Includes plenum rated box
• No external power adaptor
• Point and shoot directivity
• Designed, manufactured, assembled &
tested in the USA
• 3 year warranty
APPLICATIONS
• VideoConferencing
• DistanceLearning
• Survelliance
• HospitalandMedicalProcedures
• AmbientRoomMiking

SPECIFICATIONS
Transducer Type
Frequency Response
Polar Pattern
Output Impedance
Sensitivity
Signal to Noise Ratio
Equivalent Noise Level
Maximum SPL
Dynamic Range
Power Requirements
Connector
Polarity
Materials / Finish
Recommended Cable
Length
FREQUENCY RESPONSE
POLAR PATTERNS
Condenser
60 Hz - 10 kHz
Cardioid
150 ohms
38 mV / Pa @ 1k
72 dB
22 dB
≥130 dB
108 dB
18 - 52V phantom
3-pin Phoenix fe
Positive pressure on diaphragm
produces positive voltage on pin
2 relative to pin 3 of output XLR
connector
Brass, Aluminum and Steel White
or Nickel
Belden 9451P or 82761
176 mm / 6.9 in
ARCHITECT AND ENGINEER SPECIFICATIONS
The microphone shall be of the condenser type with a cardioid polar
pattern. The microphone shall be protected from RF interference.
The microphone shall have a fully integrated preamp circuitry
thereby eliminating the need for a remote preamplifier module. The
microphone shall operate on 18-52 Volts DC and the nominal output
impedance shall be equal to 150 ohms at 1 kHz. The microphone shall
have a sensitivity of 38 mV / Pa at 1 kHz. The microphone shall have
a maximum SPL level of ≥130 dB with THD of 0.5%. The microphone
shall be machined out of brass, aluminum and the dimensions shall
be 65 mm in diameter by 10 mm in depth. The microphone shall have
the ability to be aimed and rotated within a radius of 60 degrees. The
microphone shall be housed within a plenum rated junction box which
will conceal and protect wiring from the microphone and the terminal
connectors. The microphone shall be the Audix M70.
OPERATION
The M70W is a low impedance microphone and should be plugged
into a “mic level” input on your dsp, mixer, or recording device. The
M70 requires phantom power and will NOT operate without phantom
power voltage (18-52 Volts) which is available on most professional mic
preamps and mixing devices. If phantom power is not available on your
equipment, you will have to procure a phantom power supply (such
as the Audix APS2). Avoid plugging or unplugging the microphone
into or out of the audio system unless the channel is muted or the
volume of the system turned down. Failure to do so may result in a
loud “popping” noise which could seriously damage the speakers in the
sound system.
EXPLODED VIEW
1.56mm / .063 in seismic &
Brass strain relief for
outer cable
3 pin terminal
connector
DIMENSIONS
Ceiling Tile with 2” (51 mm) Hole
*Ceiling Thickness
MIN. 0.4” (10 mm)
MAX 0.8” (21 mm)
0.5”
(13.5 mm)
2.5”
(64 mm)
* For thicker mounts contact Audix
PRODUCT REGISTRATION
Please register your product online at www.audixusa.com/docs_12/about/product_registration.shtml.
SERVICE AND WARRANTY
This microphone is under warranty for a period of 3 years to be free of defects in material and workmanship. In the event of a product failure due to materials or workmanship, Audix will
repair or replace said product at no charge with proof of purchase. Audix does not pay or reimburse shipping costs for warranty repairs or returns. The warranty excludes any causes other
than manufacturing defects, such as normal wear, abuse, environmental damage, shipping damage or failure to use or maintain the product per the supplied instructions. No Implied
Warranties: All implied warranties, including but not limited to implied warranties of merchantability and fitness for a particular purpose are hereby excluded. The liability of Audix, if any,
for damages relating to allegedly defective products shall be limited to the actual price paid by Dealer for such products and shall in no event include incidental or consequential damages
of any kind. Should your microphone fail in any way, please contact the Audix Service department at 503.682.6933. A Return Authorization is required before returning any product.
OTHER THAN THIS WARRANTY, AUDIX MAKES NO WARRANTIES, EXPRESS OR IMPLIED, WITH RESPECT TO THE PRODUCTS, THE USE OF THE PRODUCTS, THE PERFORMANCE OF THE PRODUCTS. AUDIX
SHALL NOT BE LIABLE FOR SPECIAL, INCIDENTAL, CONSEQUENTIAL, INDIRECT OR SIMILAR DAMAGES ARISING FROM OR BASED ON THE SALE, USE, STORAGE OR DISPOSAL OF THE PRODUCTS, AUDIX’S
SERVICE WORK, BREACH OF WARRANTY, BREACH OF CONTRACT, NEGLIGENCE, OR ANY OTHER THEORY OF LIABILITY, EVEN IF AUDIX HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
Plenum Cable Diameter
- Min. 0.1” (2.5 mm)
- Max 0.16” (4.0 mm)
Ceiling Tile with 51 mm / 2 in hole
fire cable restraint
JBM70 Plenum Rated
DIMENSIONS
Box (100 x 100 x 40 mm)
(MM)
M70 with threaded
post & knurled nut
ALL SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE.
www.audixusa.com
Audix Corporation 9400 SW Barber St. Wilsonville, OR 97070
503.682.6933 Fax: 503.682.7114
ver 2.0 07-15