Audio-Technica U853PMU User's Manual
Contents
1. U853PMU amp U853PMWU UniLine Condenser Hanging Microphones Features e Wall ceiling plate power module permits permanent installation in standard single gang electrical box UniLine polar pattern provides narrow 90 acceptance angle Low profile design with low reflectance finish for minimum visibility Superior off axis rejection for maximum gain before feedback UniGuard RFl shielding technology offers outstanding rejection of radio frequency interference RFI UniSteep filter provides a steep low frequency attenuation to minimize pickup of undesired ambient noise Available interchangeable elements permit angle of acceptance from 90 to 360 Steel hanger positions microphone over choirs instrumental groups and theater stages e Available in two colors black U853PMU and white U853PMWU Description The U853PMU is a wide range miniature condenser microphone with a UniLine line cardioid polar pattern It is designed for quality sound reinforcement professional recording television and other demanding sound pickup applications The combination of small size and excellent response makes the microphone ideal for suspension over choirs instrumental groups or theater stages The microphone requires 11V to 52V phantom power for operation The microphone is equipped with UniGuard RFl shielding technology which offers outstanding rejection of radio frequency interference RFI The microphone s UniLine2. U853PMU U853PMWU ixed charge back plate permanently olarized condenser niLine line cardioid 0 20 000 Hz 0 Hz 18 dB octave 35 dB 17 7 mV re 1V at 1 Pa 00 ohms 24 dB SPL 1 kHz at 1 T H D 02 dB 1 kHz at Max SPL 2 dB 1 kHz at 1 Pa 1 52V DC 4 mA typical Flat roll off 0 dB 10 dB gain setting Microphone 30 g 1 1 oz Power module 97 g 3 4 oz Microphone 156 0 mm 6 14 long 12 2 mm 0 48 diameter Power module 71 0 mm 2 80 W x 115 5 mm 4 55 H x 36 0 mm 1 42 D Power module Screw terminals 7 6 m 25 0 long permanently attached to microphone 3 2 mm 0 13 diameter 2 conductor shielded cable with TA3F type connector UE O omnidirectional 360 UE C cardioid 120 UE H hypercardioid 100 M32 ie CO e C ioe Ba Ba rn AT8534 wall ceiling plate power module AT8451 steel hanger AT8154 two stage foam windscreen AT8438 5 s 27 stand adapter AT8534 wall ceiling plate power module AT8451 WH steel hanger AT8154 WH two stage foam windscreen AT8438 5 s 27 stand adapter 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 30 20 000 Hz T of a amp Response
3. in dB 50 100 200 500 1 21 5 Frequency in Hertz 12 or more on axis 10k 20k Roll off polar patter 180 Skt SCALE IS 5 DECIBELS PER DIVISION 8kHz Qaudio technica 6 14 156 0 mr H 0 13 3 2mm 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 0158 01
4. strands fully twisted Figure 4 y Figure 3 345 U853PMU amp U853PMWU Connect the TA3Ftype connector from the microphone s cable to the TA3M type connector in the power module plate Note Audio Technica has developed a special RFl shielding mechanism that is an integral part of the connectors in the UniPoint 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 If you need to shorten the cable between the microphone and power module it can be done two ways a To maintain original RFI shielding see note above the TA3Ftype connector can be removed from the cable end the cable shortened and the connector replaced using Audio Technica s available crimp tool and RFI shield for TASF type connector b If RFI immunity is not required the TA3M type connector on the plate can be removed and discarded save the back nut and washer Assemble the included plastic ferrule into the hole left from the TA3M type connector using the washer and nut from the connector to secure the ferrule Cut the cable to the desired length plus a few inches Thread the cable through the ferrule and tie a knot in the cable behind the ferrule to secure it Carefully strip the ends of the cable a
5. type jack on the included power module Output connections on the power module shall be screw terminals The plate power module shall be designed to mount over a standard single gang metal electrical box for ceiling or wall mounting The power module shall contain a switch to permit choice of flat response or 80 Hz low frequency roll off In addition the power module shall incorporate a switchable 10 dB gain setting The power module face plate shall be semi gloss white and mounting screws shall be included An adjustable steel wire hanger shall be provided for suspended installations The steel wire hanger shall attach to the microphone body and allow for the positioning of the microphone without the need for tools A two stage foam windscreen and a s 27 stand adapter shall also be included The microphone shall be a hanging design with overall length of 156 0 mm 6 14 and a head diameter of 12 2 mm 0 48 Weight shall be 30 grams 1 1 oz without cable The microphone cable and steel hanger shall be black white The Audio Technica U853PMU U853PMW U 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 Switches Weight Dimensions Output connector Cable Optional interchangeable elements Audio Technica case style Accessories furnished
6. e rearmost source and aimed between them Fig 1 Increasing the height of the mic above the sources will tend to equalize sound levels between them but may also increase background reverberant sound pickup When possible the distance from the mic to the rearmost source should be no more than twice the distance to the front source to maintain front to rear balance Fig 1 Width of pickup is approximately 1 5 times the distance to the closest performer If additional mics are needed for wide sources they should be positioned apart laterally at least 1 5 times the distance to the front source to avoid phase cancellation Fig 2 To orient the microphone in the proper direction twist the housing slightly in its wire holder Clockwise rotation moves the microphone to the right counterclockwise rotation moves it to the left The provided two stage foam windscreen simply slips over the head of the microphone effectively reducing noise from wind or ventilation air currents An integral 80 Hz high pass UniSteep 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 ait handling systems etc room reverberation and mechanically coupled vibrations To engage the UniSteep filter slide the switch toward the bent line A 10 dB gain switch is provided for situations that demand extra sensitive pickup The 10 pos
7. ition increases the microphone s overall output by 10 dB To engage the 10 dB gain slide the switch toward the 10 position The AT8534 wall ceiling plate power module is designed to be mounted in a standard metal U S single gang electrical box For safety and best performance use the electrical box only for the AT8534 do not include any AC power conductors Also route the mic cable as far away from AC power cables as possible Screw terminal output connections of the AT8534 are the same as those of an XLR type plug shield to Terminal 1 balanced signal and phantom power to Terminals 2 and 3 Output is phased so that positive acoustic pressure produces positive voltage at Terminal 2 in accordance with industry convention Do not connect the output cable shield to the box Double check to make certain that all input and output leads have no bare wires or loose strands that could touch each other the circuit board or the electrical box Then attach the power module plate to the electrical box a E QQQ OQ es SS THAN 2 TIMES x w Gida k DD Q QD va S 7 A S 90 90 90 ANGLE OF ACCEPTANCE MICA MIC B ke 1 5 TIMES DISTANCE X Figure 1 Figure 2 S x RED RED v 2B a 3 AUDIO YEL YEL SIG 4 422 AUDIO SHIELD GND 4 IN OUT 1 SHIELD Yellow Yellow ge Red Red Es 1 a strip reds and yellows INPUT 1 OUTPUT Terminal screws T Shield
8. line cardioid polar pattern provides a 90 angle of acceptance Additional interchangeable elements with omnidirectional 360 cardioid 120 and hypercardioid 100 pickup patterns are available The microphone includes a 7 6 m 25 permanently attached miniature cable Its free end connects to the provided AT8534 wall ceiling plate power module via a special TA3F type connector designed to optimize RFI immunity The power module features a white finished standard electrical cover plate for easy secure installation Output connections on the power module are screw terminals Switches in the power module permit a 10 dB gain setting for extra sensitive pickup as well as a choice of flat response or low frequency roll off via integral 80 Hz high pass UniSteep filter to help control undesired ambient noise The microphone comes equipped with a wall ceiling plate power module a vinyl coated steel hanger for positioning over a choir orchestra stage a two stage foam windscreen and a 5 s 27 stand adapter The microphone is enclosed in a rugged housing with a low reflectance black finish It is also available with white housing cable hanger and windscreen as the U853PMWU unipoint microphones Installation and Operation The U853PMU requires 11V to 52V phantom power for operation A uniform 90 angle of acceptance provides well balanced audio pickup The microphone should be located forward of the front most source above th
9. nd connect the wires to the terminals formerly occupied by the TA3M type connector Maintain color coding Shield S Yellow Y Red R and connect the microphone wires to the appropriate terminal screws Fig 3 Note The cable has two red wires and two yellow wires Twist the two red wires together and the two yellow wires together Fig 4 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 Engineer s Specifications The microphone shall be a fixed charge condenser designed for permanent installation It shall have a UniLine line cardioid polar pattern with a uniform 90 angle of acceptance and a frequency response of 30 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 124 dB with a dynamic range of 102 dB Nominal open circuit output voltage shall be 177 mV at 1 V 1 Pascal Output shall be low impedance balanced 200 ohms It shall offer outstanding rejection of radio frequency interference RFI The microphone shall have a 76 m 25 permanently attached miniature cable terminating in a special TA3Ftype output connector designed to optimize RFI immunity The output connector shall connect to a TB3M
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