Audix M55WHC Data Sheet

HANGING CEILING

M55

M55

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.

MICROPHONE

MODEL VARIATIONS

All M55 mics are manufactured in white finish with 4 ft cable terminating in terminal

block connector. Several capsule configurations below.

M55W - cardioid (white)

M55WHC - hypercardioid (white)

M55WS - supercardioid (shotgun) (white)
M55WO - omnidirectional (white)

SUPPLIED ACCESSORIES

CONN170F -
CONN170M - Mating terminal connector for solder-less connection
JBM55 - Metal plenum junction box with seismic and fire safety cable

restraint where required by code.

OPTIONAL ACCESSORIES

MCHANGER - Clear plastic clip to adjust mic angle

WS20W - White foam windscreen to reduce wind noise

1’ integrated mic cable with terminal block connector

FEATURES

· High output allows distance miking

· Optimized for voice recognition

· Immunity from RF interference

· Fingertip height adjustment and rotation control

· Low noise preamp circuitry

· Designed, assembled & tested in the USA

· 3 year warranty

APPLICATIONS

· Video Teleconferencing (VTC)

· Distance Learning

· Board Rooms

· Surveillance

· Hospital and medical procedures

· Ambient room miking

MCHANGER JBM55Adjustable Cable

SPECIFICATIONS

ARCHITECT AND ENGINEER SPECIFICATIONS

Transducer Type

Frequency Response

Polar Pattern

Output Impedance

Sensitivity

Equivalent Noise Level

Signal to Noise Ratio

Maximum SPL

Dynamic Range

Power Requirements

Connector

Polarity

Materials / Finish

Weight

Length

Condenser

60 Hz - 10 kHz

Cardioid / Hypercardioid /
Omni/ Supercardioid

150 ohms

38 mV (C), 32 mV (HC), 40mV
(O), 60 mV (S) / Pa @ 1k

22 dB (A-weighted)

72 dB

≥130 dB

108 dB

18 - 52 V phantom

Terminal Block Connector

Positive pressure on diaphragm
produces positive voltage on
pin 2 relative to pin 3 of output
XLR connector

Aluminum & Zinc Alloy / White
Finish

70 g / 2.4 oz (Mic & Cable)
499 g / 17.6 oz (Junction Box
& Safety Cable)

54 mm / 2.1 in

The microphone shall be of the condenser type with a modular threaded

capsule available in cardioid, hypercardioid, omnidirectional and supercardioid

polar patterns. 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 (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.

OPERATION AND MAINTENANCE

The M55 is a low impedance microphone and should be plugged into a mic

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

and mixing devices. If phantom power is not available on your equipment, use

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.

M55

FREQUENCY RESPONSE

Further miking techniques may be found at www.audixusa.com.

DIMENSIONS (mm) EXPLODED VIEW

POLAR PATTERNS

Cardioid Hypercardioid

Omni

PRODUCT REGISTRATION: Please register your product online at www.audixusa.com/docs_12/about/product_registration.shtml.
SERVICE AND WARRANTY:

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.

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

Shotgun

ALL SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE.

www.audixusa.com

Audix Corporation 9400 SW Barber St. Wilsonville, OR 97070

503.682.6933 Fax: [phone]

ver 4.0 09-16