broadcast & production
microphones
BP894 & BP894-TH
MicroSet
®
Cardioid Condenser Headworn Microphones
Features
• Industry-standard sound quality—extremely intelligible natural
audio for stage/television talent, lecturers, houses of worship
• Handles high sound pressure levels with ease
• Microphone diameter of just 2.8 mm for the ultimate in low-profile,
high-performance audio
• Rotating capsule housing with talk-side indicator
• Comes equipped with AT8464 Dual-Ear Microphone Mount
that converts single ear-worn MicroSet to a dual-ear-worn unit for
maximum stability and comfort
• 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
BP894 Description
The BP894 is a headworn condenser microphone with a cardioid polar
pattern. It is designed to provide intelligible natural audio for stage and
television talent, lecturers and houses of worship.
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.
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, a
dual-ear mount, two windscreens, a moisture guard, a belt clip and a
protective carrying case. The microphone is available in black and beige.
Wireless MicroSet
®
Description
The microphone is also available in a variety of wireless models, including
the BP894cW. The BP894cW 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 BP894.
The BP894cW is also available unterminated as the BP894c.
Cable Terminations
BP894cW, BP894cW-TH
– Terminated with locking 4-pin connector for use
with A-T UniPak
®
body-pack transmitters
BP894cL4, BP894cL4-TH
– Terminated for Sennheiser
®
wireless systems
using Lemo
®
connector
BP894cLM3, BP894cLM3-TH
– Terminated for Sennheiser
®
wireless systems
using locking 3.5 mm connector
BP894cT4, BP894cT4-TH
– Terminated for Shure
®
wireless systems using
TA4F-type connector
BP894c, BP894c-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 BP894 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. (Use of the
included AT8163 windscreen will reduce popping further in close vocal use.)
The flexible design of the BP894 MicroSet enables it to be worn on either
the left or right ear. Position the lightweight contoured loop around the back
of your ear, so that the boom extends from the bottom of your ear. Bend the
loop as needed to achieve a secure, comfortable fit, so that the MicroSet is
not dislodged by shaking your head. Remove the MicroSet and bend a gentle
curve in the microphone's boom. Hook the MicroSet back around your ear,
and adjust the boom as needed to follow the contour of your face, positioning
the microphone near the corner of your mouth. Experiment with placement
near the corner of your mouth for optimal performance.
The BP894 features a unique 180-degree rotating capsule housing, allowing
the user to wear the microphone on either the left or right ear. A talk-side
indicator shows the user which way to turn the capsule housing for their
desired position. Simply locate the white dot on the capsule housing and
rotate the capsule until the white dot faces the user’s mouth.
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 MicroSet side of the clip to
allow for free, comfortable motion.
The included AT8464 Dual-Ear Microphone Mount allows you to convert
your single ear-worn BP894 MicroSet
®
to a dual-ear-worn unit. The
BP894 fits on either side of the Dual-Ear Microphone Mount, allowing
the microphone to be worn to either the left or right of your mouth. The
headband easily adjusts to fit both children and adults.
How to use the Dual-Ear Microphone Mount
1. Insert the rounded end of your BP894 ear hook into the larger
opening of your Dual-Ear Microphone Mount’s left or right tapered
holder. Firmly seat ear hook in the tapered holder.
2. Insert the small rounded end of the additional supplied ear hook
into the larger opening of your Dual-Ear Microphone Mount’s
remaining tapered holder. Firmly seat ear hook in the tapered holder.
3. Open the Dual-Ear Microphone Mount’s adjustable behind-the-neck
headband to its maximum position by pushing the headband’s
adjusting tabs together (
a
). Put the behind-the-neck headband on,
hooking the ear hooks over your ears. Adjust the fit of the headband
as needed, by sliding the headband’s adjusting tabs until you arrive at
a secure, comfortable fit (a). Attach the microphone cable to the
cable clip positioned between the headband’s adjusting tabs (
b
).
1
2
3
a
b
