hanging ceiling microphone
M55
HANGING CEILING
MICROPHONE
OVERVIEW
The M55 is an innovative, hanging ceiling microphone system designed for
applications where aesthetics, sound quality, and ease of installation are critical. The
primary applications for the ceiling mounted M55 include Video Teleconferencing
(VTC), distance learning, hospital rooms, surveillance and ambient room miking.
The M55 accommodates interchangeable capsules with cardioid, hypercardioid,
omnidirectional and supercardioid (shotgun) coverage patterns. All electronics are
fully integrated with high sensitivity and low noise. The signal output is balanced to
eliminate RF interference caused by cell phones and mobile devices.
Installing the M55 requires drilling just one 5/8-inch hole in the ceiling, with no
additional tools needed. The M55’s mounting hardware easily adjusts the hanging
height up to four feet from the ceiling surface without removing ceiling tiles. An
optional aiming clip (MCHANGER) easily makes any additional angular adjustments.
The cable assembly is equipped with terminal block connectors. For installations
where plenum rated cable is to be used a UL rated, metal plenum junction box
is available.
FEATURES
MODEL VARIATIONS
All M55 mics are manufactured in white finish with 4 ft cable terminating in terminal
block connector. Several capsule configurations below.
·· High output allows distance miking
·· Optimized for voice recognition
M55W - cardioid (white)
·· Immunity from RF interference
M55WHC - hypercardioid (white)
·· Fingertip height adjustment and rotation control
M55WS - supercardioid (shotgun) (white)
·· Low noise preamp circuitry
M55WO - omnidirectional (white)
·· Designed, assembled & tested in the USA
SUPPLIED ACCESSORIES
·· 3 year warranty
CONN170F - 1’ integrated mic cable with terminal block connector
CONN170M - Mating terminal connector for solder-less connection
APPLICATIONS
JBM55 - Metal plenum junction box with seismic and fire safety cable
·· Video Teleconferencing (VTC)
restraint where required by code.
·· Distance Learning
OPTIONAL ACCESSORIES
·· Board Rooms
MCHANGER - Clear plastic clip to adjust mic angle
·· Surveillance
WS20W - White foam windscreen to reduce wind noise
·· Hospital and medical procedures
·· Ambient room miking
MCHANGER
Adjustable Cable
JBM55
M55
Transducer Type
Condenser
The microphone shall be of the condenser type with a modular threaded
Frequency Response
60 Hz - 10 kHz
capsule available in cardioid, hypercardioid, omnidirectional and supercardioid
Polar Pattern
Cardioid / Hypercardioid /
Omni/ Supercardioid
polar patterns. The microphone shall be protected from RF interference. The
Output Impedance
150 ohms
the need for a remote preamplifier module. The microphone shall operate on
Sensitivity
38 mV (C), 32 mV (HC), 40mV
(O), 60 mV (S) / Pa @ 1k
18 - 52 Volts DC and the nominal output impedance shall be equal to 150 Ohms
Equivalent Noise Level
22 dB (A-weighted)
Signal to Noise Ratio
72 dB
Maximum SPL
≥130 dB
Dynamic Range
108 dB
Power Requirements
18 - 52 V phantom
Connector
Terminal Block Connector
OPERATION AND MAINTENANCE
Polarity
Positive pressure on diaphragm
produces positive voltage on
pin 2 relative to pin 3 of output
XLR connector
The M55 is a low impedance microphone and should be plugged into a mic
Materials / Finish
Aluminum & Zinc Alloy / White
Finish
and mixing devices. If phantom power is not available on your equipment, use
Weight
70 g / 2.4 oz (Mic & Cable)
499 g / 17.6 oz (Junction Box
& Safety Cable)
Length
54 mm / 2.1 in
FREQUENCY RESPONSE
microphone shall have a fully integrated preamp circuitry thereby eliminating
at 1 kHz. The microphone shall have a sensitivity of 38 mV (C), 32 mV (HC), 40
mV (O), 60 mV (S) / 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 and the dimensions shall be 12 mm in diameter by 54 mm in length. The
microphone shall be the Audix M55.
level input on your console, mixer, or recording device. The M55 requires
phantom power (18-52 V), which is available on most professional mic preamps
an external phantom power source such as the Audix APS2. Avoid plugging
the microphone into or removing it from the audio system unless the channel
is muted or the relevant faders are turned down. Failure to do so may result in a
loud popping noise that could seriously damage the speakers.
Further miking techniques may be found at www.audixusa.com.
DIMENSIONS (mm) EXPLODED VIEW
POLAR PATTERNS
Cardioid
Hypercardioid
Omni
Shotgun
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.
www.audixusa.com
ALL SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE.
503.682.6933 Fax: 503.682.7114
Audix Corporation 9400 SW Barber St. Wilsonville, OR 97070
ver 4.0 09-16
M55
ARCHITECT AND ENGINEER SPECIFICATIONS
SPECIFICATIONS
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