![](/html/a6/a6c9/a6c9d0e6ca39d1e104b3c30c48d2a3a6f6403e555e8a66d3b9e9ed2e95fcaf23/bg1.png)
ES905CL
Cardioid Condenser Rigid-Pipe Microphone
®
engineered sound
Installation and Operation
The ES905CL 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.
The microphone is intended for mounting to a hard surface, such as
a table, desk, or podium using the isolation base plate. ATTENTION!
Do not remove ball-in-socket assembly from the base plate. The
microphone is supplied with three #8 x 1" black oxide wood screws
for mounting the microphone. The cable can exit out the back of the
microphone or be routed through a hole in the mounting surface. To
install the microphone with bottom-routed cable: Drill a 4 mm (5/32") hole
centered in the area where the microphone mount is to be positioned.
Pass the cable extending from the microphone mount through this hole
and mount the microphone into position using the screws provided.
microphones
Features
• Rigid-pipe design with ball-in-socket base permits exible
positioning
• Sturdy metal base mounts to table, desk or podium with
included hardware
• Low-prole element provides uniform cardioid polar pattern
with 120º acceptance angle
• Superior off-axis rejection for maximum gain before feedback
• UniGuard® RFI-shielding technology offers outstanding rejection
of radio frequency interference (RFI)
• UniSteep® lter provides a steep low-frequency attenuation to
improve sound pickup without affecting voice quality
• Available interchangeable elements permit angle of acceptance
from 100º to 360º
Description
The ES905CL is a wide-range condenser microphone with a cardioid
polar pattern. It is designed for quality sound reinforcement, professional
recording and other demanding sound pickup applications.
The rigid-pipe design with ball-in-socket base permits exible positioning
while maintaining a clean appearance.
The microphone requires 11V to 52V phantom power for operation.
The microphone is equipped with UniGuard® RFI-shielding technology,
which offers outstanding rejection of radio frequency interference (RFI).
The microphone’s cardioid polar pattern provides a 120° angle of
acceptance. Additional interchangeable elements with omnidirectional
(360°) and hypercardioid (100°) pickup patterns are available.
The microphone includes a 2.9 m (9.5') permanently attached miniature
cable. Its free end connects to the provided AT8538 power module via
a special TA3F-type connector designed to optimize RFI immunity. The
output of the power module is a 3-pin XLRM-type connector.
A recessed switch in the power module permits choice of at response
or low- frequency roll-off (via integral 80 Hz high-pass UniSteep® lter) to
help control undesired ambient noise.
The microphone comes equipped with a power module and hardware
for table-mounting the microphone’s (attached) isolation base plate.
The microphone is enclosed in a rugged housing with a low-reectance
black nish.
The attached wire mesh windscreen with internal pop protection
effectively reduces noise from plosives, wind and ventilation air currents.
An integral 80 Hz high-pass UniSteep® lter provides easy switching
from a at 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 trafc,
air-handling systems, etc.), room reverberation and mechanically coupled
vibrations. To engage the UniSteep® lter, use the end tip of a paperclip or
other small pointed instrument to slide the switch toward the “bent” line.
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.
Note: Audio-Technica has developed a special RFI-shielding mechanism
that is an integral part of the connectors in the Engineered Sound® line. If
you remove or incorrectly replace the connector, you may adversely affect
the unit’s RFI immunity. Audio-Technica offers a crimp tool (ATCT) and RFI
shields that enable you to shorten the cable and correctly reinstall the
connector while maintaining the highest level of RFI immunity.
Architect’s and Engineer’s Specications
The microphone shall be a xed-charge condenser designed for
permanent installation tabletop mounting. It shall have a cardioid polar
pattern with a uniform 120° angle of acceptance and a frequency
response of 60 Hz to 20,000 Hz. It shall be capable of accepting
optional interchangeable elements for additional polar patterns. 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 138 dB with a dynamic range of 111 dB. Nominal open-circuit
output voltage shall be 12.5 mV at 1 V, 1 Pascal. Output shall be low
impedance balanced (250 ohms). It shall offer outstanding rejection of
radio frequency interference (RFI).
The microphone shall have a 2.9 m (9.5') permanently attached miniature
cable, terminating in a special TA3F-type output connector designed
to optimize RFI immunity. The output connector shall connect to a
TB3M-type jack on the included power module. The power module shall
contain a recessed switch to permit choice of at response or 80 Hz
low-frequency roll-off. The output of the power module shall be a 3-pin
XLRM-type connector.
Mounting screws shall be provided with the microphone. The microphone
shall be equipped with an attached wire mesh windscreen with internal
pop protection.
![](/html/a6/a6c9/a6c9d0e6ca39d1e104b3c30c48d2a3a6f6403e555e8a66d3b9e9ed2e95fcaf23/bg2.png)
249
ES905CL
The microphone shall be a small-diameter ball-in-socket, rigid-pipe design,
with an isolation base plate for table mounting. The microphone shall be
523.4 mm (20.61") long and have a head diameter of 24.6 mm (0.97").
Weight shall be 330 grams (11.6 oz). Finish shall be low-reectance black.
The Audio-Technica ES905CL is specied.
Specications
Element
Polar pattern
Frequency response
Low frequency roll-off
Open circuit sensitivity
Impedance
Maximum input sound level
Dynamic range (typical)
Signal-to-noise ratio
Phantom power requirements
Dimensions
Output connector
Optional interchangeable elements
Audio-Technica case style
Accessories furnished
In the intere st of standards develo pment, A.T.U.S. offers full
details on it s test methods to othe r industry
1 Pascal = 10 dynes/cm
1
Typical, A-weighted, using Audio Precision System One.
Specications are subject to change without notice.
professionals on request.
2
= 10 microba rs = 94 dB SPL
Switch
Weight
Cable
Fixed-charge back plate, permanently
polarized condenser
Cardioid
60-20,000 Hz
80 Hz, 18 dB/octave
–38 dB (12.5 mV) re 1V at 1 Pa
250 ohms
138 dB SPL, 1 kHz at 1% T.H.D.
111 dB, 1 kHz at Max SPL
1
67 dB, 1 kHz at 1 Pa
11-52V DC, 2 mA typical
Flat, roll-off
Microphone: 330 g (11.6 oz)
Power module: 81 g (2.9 oz)
Microphone: 523.4 mm (20.61") long,
24.6 mm (0.97") head diameter
Power module: 92.9 mm (3.66") long,
18.9 mm (0.74") diameter
Power module: Integral 3-pin XLRM-type
2.9 m (9.5') long (permanently attached
to microphone), 3.2 mm (0.13") diameter,
2-conductor shielded cable, terminated
with TA3F-type connector
ESE-O omnidirectional (360°)
ESE-H hypercardioid (100°)
M37
AT8538 power module; three #8 x 1"
black oxide wood screws for microphone
mount
frequency response: 60–20,000 Hz
10 dB
100
330˚
500
200
Frequency in Hertz
12" or more on axis
Roll-off
0˚
30˚
150˚
180˚
5k
2k
1k
60˚
120˚
10k
90˚
LEGEND
200 Hz
1 kHz
5 kHz
8 kHz
50
LEGEND
polar pattern
300˚
270˚
240˚
210˚
SCALE IS 5 DECIBELS PER DIVISION
Audio-Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224
Audio-Technica Limited, Old Lane, Leeds LS11 8AG England
©2010 Audio-Technica U.S., Inc. audio-technica.com 0001-0114-01
Response in dB
20k