Audio-Technica BP893 - Manual
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broadcast & production
microphones
BP893 & BP893-TH
MicroEarset Omnidirectional Condenser Headworn Microphones
Features
• Outstanding clarity and intelligibility
• Lightweight, ergonomic design
• Extremely unobtrusive, 1-inch flexible boom
• Secure over-the-ear placement
• Extended frequency response for natural vocal reproduction
• Locking 4-pin microphone output connector compatible with
included power module and all Audio-Technica UniPak
®
body-pack
wireless transmitters
• UniSteep
®
filter provides a steep low-frequency attenuation to
improve sound pickup without affecting voice quality
• Offered in black and beige (-TH) models
• Also available in wireless models (without power module)
terminated for use with all Audio-Technica UniPak
®
wireless
systems and many other manufacturers' wireless systems
BP893 Description
The BP893 is a headworn condenser microphone with an omnidirectional
polar pattern. It is designed to provide clear, natural vocal pickup in theatrical
performances, houses of worship and broadcast studios.
The microphone requires 11V to 52V phantom power for operation.
The microphone includes a 1.4 m (55") permanently attached miniature cable.
Its free end connects to the provided AT8539 power module via a locking
4-pin connector. The connector is also compatible with all Audio-Technica
UniPak
®
body-pack transmitters. The output of the power module is a 3-pin
XLRM-type connector.
The BP893 MicroEarset is positioned unobtrusively over the ear. Its
omnidirectional miniature condenser capsule offers outstanding pickup
tailored for natural vocal reproduction, with audio reproduction similar to
that of a high-quality lavalier microphone. The microphone is also ideal for
use in violin pickup; wear the BP893 over the ear as usual, with no need for
clamps on the violin.
A recessed switch in the power module permits choice of flat response or
low-frequency roll-off (via integral 80 Hz high-pass UniSteep
®
filter) to help
control undesired ambient noise.
The microphone comes equipped with a power module, a cable clip, two
windscreens, two element covers, a moisture guard, a belt clip and a
protective carrying case. The microphone is available in black and beige.
Wireless Description
The microphone is also available in a variety of wireless models, including
the BP893cW. The BP893cW includes a 1.4 m (55") permanently attached
miniature cable terminated with a locking 4-pin connector for use with
Audio-Technica UniPak
®
body-pack transmitters. Models are also available in
a variety of terminations for use with many other manufacturers’ wireless
systems (see below). No power module or belt clip is included (or required)
with the wireless models. The wireless models’ dimensions, polar pattern
and included accessories are otherwise identical to those of the BP893.
The BP893cW is also available unterminated as the BP893c.
Cable Terminations
BP893cW, BP893cW-TH
– Terminated with locking 4-pin connector for use
with A-T UniPak
®
body-pack transmitters
BP893cL4, BP893cL4-TH
– Terminated for Sennheiser
®
wireless systems
using Lemo
®
connector
BP893cLM3, BP893cLM3-TH
– Terminated for Sennheiser
®
wireless systems
using locking 3.5 mm connector
BP893cT4, BP893cT4-TH
– Terminated for Shure
®
wireless systems using
TA4F-type connector
BP893cT5, BP893cT5-TH
– Terminated for Lectrosonics
®
wireless systems
using TA5F-type connector
BP893c, BP893c-TH
– Unterminated
Model numbers ending in ”TH“ are beige.
Audio-Technica
®
is a registered trademark of Audio-Technica. Other product and company names
mentioned herein may be trademarks and/or service marks of their respective owners.
Operation and Maintenance
The BP893 requires 11V to 52V phantom power for operation.
Output is low impedance (Lo-Z) balanced. The signal appears across Pins
2 and 3; Pin 1 is ground (shield). Output phase is “Pin 2 hot”— positive
acoustic pressure produces positive voltage at Pin 2.
An integral 80 Hz high-pass UniSteep
®
filter provides easy switching from
a flat frequency response to a low-end roll-off. The roll-off position reduces
the microphone’s sensitivity to popping in close vocal use. It also reduces
the pickup of low-frequency ambient noise (such as traffic, air-handling
systems, etc.), room reverberation and mechanically coupled vibrations. To
engage the UniSteep
®
filter, use the end tip of a paperclip or other small
pointed instrument to slide the switch toward the “bent” line.
The BP893 can be worn on either the left or right ear. Position the ear loop
around the back of your ear, so that the boom extends from the top of your
ear, and adjust the boom as needed to follow the contour of your face.
A cable clip is provided for strain relief, allowing the microphone to remain
securely in place without the weight of the cable pulling on the headset.
To install the cable clip, slip the cable into the snap-on connector and attach
the clip to clothing, leaving enough slack on the MicroEarset side of the clip
to allow for free, comfortable motion.
The donut-shaped moisture guard is provided to protect the element from
sweat and moisture. Position the moisture guard as close to the element as
possible to provide maximum protection. To remove the moisture guard, first
remove the element cover and place it out of harm’s way. Gently slide the
moisture guard over the element. Replace the element cover.
Avoid leaving the microphone in the open sun or in areas where
temperatures exceed 110° F (43° C) for extended periods. Extremely high
humidity should also be avoided.
Architect’s and Engineer’s Specifications
The microphone shall be a fixed-charge condenser designed for headworn
use. It shall have an omnidirectional polar pattern and a frequency response
of 20 Hz to 20,000 Hz. The microphone shall operate from an external 11V
to 52V DC phantom power source. It shall be capable of handling sound
input levels up to 114 dB with a dynamic range of 88 dB. Nominal open-
circuit output voltage shall be 19.9 mV at 1V, 1 Pascal. Output shall be low
impedance balanced (245 ohms).
The microphone shall have a 1.4 m (55") permanently attached miniature
cable terminating in a locking 4-pin output connector. The output connector
shall connect to a jack on the included power module. The output connector
shall also connect to any Audio-Technica UniPak
®
body-pack wireless
transmitter. The power module shall contain a recessed switch to permit
choice of flat response or 80 Hz low-frequency roll-off. The output of the
power module shall be a 3-pin XLRM-type connector.
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