Audio-Technica ATM75 User's Manual
Contents
1. ATM75 Cardioid Condenser Headworn Microphone Features e Ideal for drummers keyboard players guitarists or anyone requiring hands free operation e Low visibilty headband provides stable comfortable fit e Pivot mounted flexible mic boom descends from left or right side e 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 e Rugged design and construction for reliable performance e Switchable 80 Hz high pass filter 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 microphone s 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 TASF type connector The output of the power module is a 3 pin XLRM type connector2. A 3 position switch in the power module permits choice of off on flat response or on low roll off via integral 80 Hz high pass filter 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 72 unterminated cable as artist series live sound microphones 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 L
3. amp Response in dB Fixed charge back plate permanently polarized condenser Cardioid 100 13 000 Hz 80 Hz 18 dB octave 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 52V DC 2 mA typical 1 5V AA UM3 0 4 mA 2000 hours typical alkaline Off on flat on roll off Microphone 60 g 2 1 oz Power module 139 g 4 9 oz Microphone 20 4 mm 0 80 diameter Power module 84 0 mm 3 31 H x 63 0 mm 2 48 W x 22 0 mm 0 87 D Headset 120 0 mm 4 72 nominal at widest point 80 5 mm 3 17 flexible boom Power module Integral 3 pin XLRM type 1 4 m 4 6 long permanently attached to microphone 2 8 mm 0 11 diameter 2 conductor shielded cable with TA3F type connector M19 AT8531 power module AT8439 cable clip AT8139L large windscreen AT8139S small windscreen battery audio technica 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 0165 01
4. itect s and Engineer s Specifications The microphone shall be a fixed 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 UMS 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 flat 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 361 ATM75 The microphone shall also be available in a wireless model with a 1 4 m 55 pe
5. o 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 flat response or on low roll off via integral 80 Hz high pass filter The roll off position reduces the pickup of low frequency ambient noise such as traffic ai handling systems etc room reverberation and mechanically coupled vibrations To engage the high pass filter slide the switch toward the bent line To turn the microphone on without engaging the high pass filter slide the switch toward the flat 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 airdry 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 Arch
6. rmanently attached miniature cable terminated with a locking 4 pin connector for use with Audio Technica UniPak body pack transmitters No power module or battery shall be required or included with the wireless model The wireless model dimensions polar pattern and included large windscreen shall be identical to those of the wired model The wireless model shall also be available with a 2 2 m 72 unterminated cable The Audio Technica ATM75 ATM75cW wireless ATM75c unterminated is specified Specifications 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 Battery type Battery current life Switch Weight Dimensions Output connector Cable Audio Technica case style Accessories furnished In the interest of standards development A T U S offers full details on its test methods to other industry professionals on request 1 Pascal 10 dynes cm 10 microbars 94 dB SPL 1 Typical A weighted using Audio Precision System One Specifications are subject to change without notice frequency response 100 13 000 Hz 50 100 200 500 1k 2k I Frequency in Hertz 12 or more on axis Roll off 10k 20k LEGEND 180 a
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