??? Designed for suspension over choirs, instrumental groups and theater stages

??? UniLine??? polar pattern provides narrow 90?? acceptance angle

??? Superior off-axis rejection for maximum gain before feedback

??? UniGuard??? RFI-shielding technology offers outstanding rejection of radio frequency interference (RFI)

??? UniSteep?? filter provides a steep low-frequency attenuation to improve sound pickup without affecting voice quality

??? Accepts interchangeable elements to permit angle of acceptance from 90?? to 360??

???Low-profile design with low-reflectance finish for minimum visibility

???Available in two colors: black (U853RU) and white (U853RWU) The U853RU requires 11V to 52V phantom power for operation.

A uniform 90?? angle of acceptance provides well-balanced audio pickup over a narrow area. The microphone should be located forward of the front-most source, above the rear-most 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 rear-most 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.)

Output from the power module???s XLRM-type connector 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.

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, air-handling systems, etc.), room reverberation and mechanically coupled vibrations.

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.

NOTE: Audio-Technica has developed a special RFI-shielding mechanism, which is an integral part of the connectors in the UniPoint line. If you remove or replace the connector, you may adversely affect the unit's RFI immunity.

U853RU/U853RWU SPECIFICATIONS???

???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/cm2 = 10 microbars = 94 dB SPL

1 Typical, A-weighted, using Audio Precision System One. Specifications are subject to change without notice.

Polar PatternFrequency Response

Frequency in Hertz

LEGEND

200 Hz

1 kHz

5 kHz

8 kHz