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Audio-Technica Headphones ATM75 manual

Brand: Audio-Technica, product: Audio-Technica Headphones ATM75

Type: Headphones

Total pages: 2, PDF manual size: 0.39 Mb


artist series live sound microphones
ATM75
Cardioid Condenser Headworn Microphone
Features
Ideal for drummers, keyboard players, guitarists or anyone
requiring hands- free operation
Low-visibilty headband provides stable, comfortable t
Pivot-mounted exible mic boom descends from left or right side
Belt-mounted power module operates on battery or phantom
power
Cardioid polar pattern reduces pickup of sounds from the sides
and rear, improving isolation of desired sound source
Rugged design and construction for reliable performance
Switchable 80 Hz high-pass lter minimizes pickup of undesired
low-frequency sounds
Also available in two additional versions (without power module)
ATM75cW— cable terminated for A-T UniPak
®
wireless systems
ATM75c unterminated cable
ATM75 Description
The ATM75 is a headworn condenser microphone with a cardioid polar
pattern. It is designed for use by performing musicians and others who
require professional-quality vocal pickup with hands-free operation.
The microphone requires 11V to 52V phantom power or a 1.5V AA battery
for operation. A battery need not be in place for phantom power operation.
The microphones cardioid polar pattern provides a 120° angle of acceptance.
The microphone includes a 1.4 m (4.6') permanently attached miniature
cable. Its free end connects to the provided AT8531 power module via a
TA3F-type connector. The output of the power module is a 3-pin XLRM-
type connector.
A 3-position switch in the power module permits choice of off, on/at
response or on/low-roll-off (via integral 80 Hz high-pass lter). The roll-off
position reduces the pickup of low-frequency ambient noise.
The microphone comes equipped with a power module, a cable clip, a
large windscreen, a small windscreen and a battery.
ATM75cW Description
The microphone is also available in a wireless model, the ATM75cW. The
ATM75cW 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. No power module or battery is included (or
required) with the ATM75cW. The ATM75cW dimensions, polar pattern, and
included accessories are otherwise identical to those of the ATM75.
The ATM75cW is also available with a 2.2 m (7.2') unterminated cable as
the ATM75c.
Operation and Maintenance
The ATM75 requires 11V to 52V phantom power or a 1.5V AA battery for
operation. A battery need not be in place for phantom power operation.
To install the battery, remove the cap from the top of the power module.
Insert a fresh 1.5V AA battery (“+” end toward the cap release button),
then reassemble the power module. For longest battery life, the switch
should remain off except when the microphone is in use. Alkaline
batteries are recommended for longest life. Remove the battery during
long-term storage.
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.
A 3-position switch in the power module permits choice of off, on/at
response, or on/low-roll-off (via integral 80 Hz high-pass lter). The roll-off
position reduces the pickup of low-frequency ambient noise (such as
trafc, air-handling systems, etc.), room reverberation and mechanically
coupled vibrations. To engage the high-pass lter, slide the switch toward
the “bent” line. To turn the microphone on without engaging the high-
pass lter, slide the switch toward the at line.
For maximum stability and minimum visibility, the headband should be
worn around the back of the head, with each cushioned support pad
resting on the temple in front of the ear. The cable should remain clipped
to the headband, with some slack at the boom connection. The headset
is designed so the microphone descends from the left or right side.
After use in high-moisture applications, such as aerobics instruction,
on-stage performing, etc., remove the foam screen, wipe off the headset
with a towel and permit them to air-dry. (Do not store in a closed space,
such as a plastic bag, until all moisture has evaporated.)
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 Engineers Specications
The microphone shall be a xed-charge condenser designed for
headworn use. It shall have a cardioid polar pattern with a uniform 120°
angle of acceptance and a frequency response of 100 Hz to 13,000 Hz.
The microphone shall operate from an external 11V to 52V DC phantom
power source or, alternatively, from a 1.5V AA/UM3 battery. It shall
be capable of handling sound input levels up to 132 dB (phantom) or
121 dB (battery) with a dynamic range of 96 dB (phantom) or 85 dB
(battery). Nominal open-circuit output voltage shall be 2.8 mV (phantom)
or 2.2 mV (battery) at 1 V, 1 Pascal. Output shall be low impedance
balanced (200 ohms – phantom, 270 ohms – battery).
The microphone shall have a 1.4 m (4.6') permanently attached miniature
cable, terminating in a TA3F-type output connector. The output connector
shall connect to a TB3M-type jack on the included power module. The
power module shall house the battery, and shall contain a switch that
permits choice of off, on/at response or on/low-roll-off (80 Hz). The
output of the power module shall be a 3-pin XLRM-type connector.
The microphone shall be a headworn design with an element diameter
of 20.4 mm (0.80"). Weight shall be 60 grams (2.1 oz). The microphone
shall include a power module, a cable clip, a large windscreen, a small
windscreen and a battery.

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