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AT8539
Power Microphones
Features
• HRS-type input connector allows any A-T Wireless Essentials®
microphone to function as a wired model
•
Switchable low-cut lter minimizes pickup of unwanted low
frequencies
• XLRM-type output connector
• Designed to plug directly into an XLR-type chassis connector
• Rugged steel case construction
Specications
Input/Output connectors
Frequency response
Impedance
Low-cut lter
Phantom power
Switch
Dimensions
Accessory included
In the inter est of standards devel opment, A.T.U.S. offers
full details on its test methods t o other industry profe s-
Specication s are subject to chang e without notice.
sionals on r equest.
electronics
HRS-type 4-pin / XLRM-type
Microphone dependent
250 ohms
80 Hz, 18 dB/octave
11-52V DC, 2 mA typical
Flat / Roll-off
97.6 mm (3.84") long ,
18.9 mm (0.74") diameter
Belt clip
Description
The AT8539 power module allows any Audio-Technica Wireless
Essentials® microphone to operate as a wired microphone. The power
module’s HRS-type 4-pin input connector mates with any Audio-Technica
Wireless Essentials® (wireless microphone with model number ending in
a cW); its output is a standard 3-pin XLRM-type connector.
It offers a low-cut lter to help minimize the pickup of unwanted low
frequencies. To engage the low-cut lter, use the end tip of a paperclip or
other small pointed instrument to slide the switch toward the “bent” line.
The power module is constructed of rugged steel for maximum durability
and optimum shielding from hum. A snap-on belt clip is included.
Architect’s and Engineer’s Specications
The in-line power module shall allow any Audio-Technica wireless
microphone terminated with a 4-pin HRS-type connectors to connect
to a wired microphone circuit. The input connection shall be through an
HRS-type 4-pin connector. Output shall be a standard 3-pin XLRM-type
connector. The power module shall convert the audio signal to a standard
balanced line microphone level output as well as provide operating DC
bias voltage for the attached microphone. An integral low-cut lter shall,
when engaged, roll off the low-end audio at 80 Hz with a slope of 18 dB
per octave. The lter shall be engaged via a recessed switch. The power
module shall be constructed of metal for optimum shielding from hum.
Output impedance shall be 250 ohms.
The Audio-Technica AT8539 is specied.
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 0001-0239-00