User Manual
Cardioid Condenser Headword Microphones ATM75 / ATM75cW / ATM75cH
■Features
■Notes on use
■Connection procedure
This product requires 48 V
DC phantom power.
Output terminals
PIN1 (ground)
PIN3
(cold)
PIN2 (hot)
■Specifications
Fixed-charge back plate, permanently polarized condenser
Cardioid
100 - 13,000 Hz
80 Hz, 18 dB/octave (wired only)
Phantom: -51 dB (2.8 mV) re 1V at 1 Pa
Battery: -53 dB (2.2 mV) re 1V at 1 Pa
Phantom: 200 ohms
Battery: 270 ohms
Phantom: 132 dB SPL, 1 kHz at 1% T.H.D.
Battery: 121 dB SPL, 1 kHz at 1% T.H.D.
Phantom: 96 dB, 1 kHz at Max SPL
Battery: 85 dB, 1 kHz at Max SPL
58 dB, 1 kHz at 1 Pa
11-52 V DC, 2 mA typical (wired only)
1.5V AA (wired only)
Headset: 120.0 mm nominal at widest point, 80.5 mm boom
0.4 mA / 2000 hours (wired only) (alkaline)
Microphone: 20.4 mm diameter
• 1 Pascal = 10 dynes/cm
2
= 10 microbars = 94 dB SPL
* Typical, A-weighted, using Audio Precision System One.
■Polar pattern ■Frequency response
■Cable Terminations
180°
150°
120°
30°
0°
330°
300°
270°
240°
210°
Audio-Technica Corporation
2-46-1 Nishi-naruse, Machida, Tokyo 194-8666, Japan
©2017 Audio-Technica Corporation
Global Support Contact: www.at-globalsupport.com
13-NOV--2020 Form No.ATGC-L0381-20
LEGEND
0°, 50cm
SCALE IS 5 DECIBELS PER DIVISION
LEGEND
200 Hz
1 kHz
5 kHz
8 kHz
Thank you for purchasing this product. Before using the product, read through the user
manual to ensure that you will use the product correctly.
Please keep this manual for future reference.
ATM75 wired version includes a power module AT8531 that requires 11V to 52V DC
phantom power, or a 1.5V AA battery for operation. A battery need not be in place for
phantom power operation. The output of the power module is a 3-pin XLRM-type connector.
An integral 80Hz high-pass filter provides easy switching from a flat frequency response to a
low-end roll-off. The roll-off position reduces the pickup of low-frequency ambient noise
(such as traffic, air-handling systems, etc.), room reverberation and mechanically coupled
vibrations.
ATM75cW and ATM75cH wireless versions do not contain power module and includes
clothing clip and metal-frame pop filter only. 1.4 m cable terminated with locking 4-pin
connector. The connector is also compatible with Audio-Technica cW and cH type
body-pack transmitters.
Avoid leaving the microphone in the open sun or in areas where temperatures exceed 43°C
for extended periods. Extremely high humidity should also be avoided.
Connect the output terminals of AT8531 power module to a device that has a microphone
input (balanced input) compatible with a phantom power supply. The output connector is
an XLRM-type with polarity as shown in the figure below.
For product improvement, the product is sublect to modification without notice.
• Ideal for drummers, keyboard players, guitarists or anyone requiring hands-free operation
• Low-visibilty headband provides stable, comfortable fit
• Pivot-mounted flexible mic boom descends from left or right side
• Belt-mounted power module operates on battery or phantom power
• Cardioid polar pattern improving isolation of desired sound source
• Rugged design and construction for reliable performance
• ATM75 wired version's power module (AT8531) includes a switchable 80 Hz high-pass filter
minimizes pickup of undesired low-frequency sounds
• Wireless version equipped with cW-style locking or cH-style screw-down 4-pin termination
for Audio-Technica wireless systems
■Safety precaution
■Cautions for the product
Although this product was designed to be used safely, failing to use it correctly may result in
an accident. To ensure safety, observe all warnings and cautions while using the product.
• Do not subject the product to strong impact to avoid malfunction.
• Do not disassemble, modify or attempt to repair the product.
• Do not handle the product with wet hands to avoid electric shock or injury.
• Do not store the product under direct sunlight, near heating devices or in a hot, humid or
dusty place.
Integral 3-pin XLRM-type (Power module)
Element
Polar pattern
Frequency response
Low Frequency response
Open circuit sensitivity
Impedance
Maximum input sound level
Dynamic range (typical)
Signal-to-noise ratio
Phantom power requirements
Battery Type
Battery Current / Life
Dimensions
Output connector
Cable 1.4 m long (permanently attached to microphone),
Roll-off
Off, on-Flat, on-roll-off (wired only)
Microphone: 60 g
Switch
Weight
Power module (wired only): 139 g
Included accessories AT8139L large windscreen; AT8139S small windscreen;
AT8439 cable clip.
(wired only) - AT8531 power module (ATM75)
2.8 mm diameter, 2-conductor shielded cable
(termination dependent)
60°
90°
ATM75cW – Terminated with locking 4-pin connector for use with A-T UniPak
®
body-pack transmitters
ATM75cH – Terminated with locking 4-pin connector for use with A-T cH body-pack transmitters
1
2
3
4
1
4
3
2
Pin 1 Pin 2 Pin 3 Pin 4
Function Ground / Shield Instrument Mic Audio Blas + In
Wire Colour Copper Wire Jumper to Pin 1 Yellow Red
Pin 1 Pin 2 Pin 3 Pin 4
Function Ground / Shield Instrument Mic Audio Blas + In
Wire Colour Copper Wire Jumper to Pin 1 Yellow Red
Power module: 84.0 mm (H), 63.0 mm (W), 22.0 mm (D)
AT8531 AT8139L AT8139S
Response in dB
Frequency in Hertz
AT8439
10 dB
1k 10k 100k10010
10
0
-10
-20
-30
20
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