Miniature Condenser
M1255B
M1255B
OVERVIEW
The M1255B is a miniaturized condenser microphone with a fully integrated preamp,
detachable cable and is designed with very high sensitivity for distance miking.
Applications include ceiling mount or table mount for conferencing, hanging choir
miking, location recording, audience or room miking.
The M1255B has complete immunity from RF interference caused by cell phones and
GSM devices. The M1255B is equipped with a cardioid capsule and is also available
with hypercardioid, omni or shotgun capsules. The microphone has the unique
ability to be used in a wide variety of live, studio and broadcast applications.
The M1255B is available with a wide array of clips and accessories for musical
instruments, overhead stage miking, podiums, conferences and presentations.
Microphone
FEATURES
MODEL VARIATIONS
The M1255B mics are also available with white finish (M1255BW).
M1255BHC - Hypercardioid mic in black, also available in white (M1255BWHC).
M1255BO - Omni-directional mic in black, also available in white (M1255BWO).
M1255BS - Supercardioid mic in black, also available in white (M1255BWS).
SUPPLIED ACCESSORIES
CBL25 - 25’ cable with mini-XLRf - XLRm connectors
MCMICRO - Mic stand adapter
MCHANGER - Hanging clip
WS1218 - External foam windscreen
OPTIONAL ACCESSORIES
MICROBOOM - 24”, 50” or 84” carbon fiber boom arm with clutch assembly
SMTMICRO - Stand adapter with rubber insulated shockmount
DCLAMPMICRO - Lug mount adapter for hand percussion instruments with
shockmount ring
DVICEMICRO - Drum rim mount attachment with shockmount ring
MC20i - Clamp on clip for Sax, Trumpet and other brass instruments
MGN Series - 6”, 12” or 18” gooseneck with base terminating in standard XLRm
· Small, lightweight, low profile
· Miniaturized preamp circuitry
· No external power adapter needed
· 12 mm gold vapor diaphragm
· Immune to RF interference
· Extremely low noise, high SPL handling
· Designed, assembled, manufactured &
tested in the USA
· 3 year warranty
APPLICATIONS
· Speech, Podium, Presentation
· Overhead mic for choir, group vocals
· Acoustic instruments
· Ambient room miking
· Vocal ensembles
· Cymbals, Percussion
SMTMICRO MCHANGER MG12 / 15 / 18 MICROBOOM M1255BW
SPECIFICATIONS
Transducer
Frequency Response
Polar Pattern
Output Impedance
Sensitivity
Signal/Noise Ratio
Equivalent Noise Level
Maximum SPL
Dynamic Range
Power Requirements
Connector
Materials / Finish
Weight
Length
Condenser
50 Hz - 19 kHz
Cardioid, Hypercardioid,
Omni, Supercardioid
150 ohms
38 mV (C), 32 mV (HC) 40 mV (O),
60 mV (S) / Pa @ 1k
73 dB
21 dB (A-weighted)
≥130 dB
109 dB
18 - 52 V
3 pin mini-XLRm
Machined brass / Black or
White Finish
16 g / 0.56 oz
54 mm / 2.1 in
FREQUENCY RESPONSE
ARCHITECT AND ENGINEER SPECIFICATIONS
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 at 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% and 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 M1255B.
OPERATION AND MAINTENANCE
The M1255B is a low impedance microphone and should be plugged into a “mic
level” input on your console, mixer, or recording device. The M1255B 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, use a phantom power
supply such as the Audix APS2.
Avoid plugging or unplugging the microphone from a PA 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 PA system, studio monitors or headphones.
USER TIPS
The M1255B is designed with extremely high sensitivity. This, in conjunction
with very low noise electronics, allows it to be used as a distance microphone
either overhead or on a table. The M1255B is particularly effective in situations
where achieving the proper gain is a challenge, either because the mic mixer
has limited gain or the strength of the sound source.
M1255B
POLAR PATTERNS
Cardioid Hypercardioid Omni Shotgun
Cardioid: With its small size, the M1255B can also be used in hard to reach
areas, such as beneath cymbals. For orchestral instruments, the M1255B may
be positioned anywhere from 3 - 12 inches depending on instrument and
room acoustics. For speech or single voice, the typical working distance is 8 - 10
inches. For area miking or group vocals the working distance can be between
2 - 6 feet from the sound source.
Hypercardioid: In situations where the volume is loud on stage or there
are many open microphones, this pattern is helpful in further isolating the
instrument or vocal from the rest of the instruments on stage. The microphone
DIMENSIONS (mm)
can be worked at ½ the distance of cardioid if necessary.
Supercardioid: This pattern is a preference for podium applications. It is helpful in
pin-pointing hard to reach areas, especially for recording outdoors and with video.
Omnidirectional: This pattern offers the most accurate and natural sound
reproduction of all the patterns. It is ideal for recording, live broadcasts or video
where sound reinforcement speakers are not an issue. Not recommended for
conferencing applications.
Further miking techniques may be found at www.audixusa.com.
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 RESPEC T 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 PRODUC TS, 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 POSSIBILIT Y OF SUCH DAMAGES.
This microphone is under warranty for a period of 5 years to be free of defects in material and workmanship. In the event of a product failure due to materials or
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 3.0 05-16
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