Electro-Voice Microphone manual Engineering Data Sheet, Applications, Technical Specifications

Engineering Data Sheet

Applications:

The PolarChoice™ Desktop is acoustically designed for high-quality sound reinforcement and broadcast applications. The frequency response is tailored for wide-range sound reproduction with very natural sound pick-up for either distant or close-up use. The PC Desktop can be used on lecterns, podiums, desks, table-tops, or other applications. To maximize gain-before- feedback, the PolarChoice’s™ three directional polar patterns allow the user to pick the directional polar pattern for optimum effect. For those applications where gain-before-feedback is not a problem, an omnidirectional pattern is included. Applications requiring speaking close to the microphone at podiums, lecterns, or pulpits normally require a windscreen (included) to control breath noise and P-popping or, in some cases, wind noise from circulating air.

Technical Specifications: Dimension Drawings:

Generation Element:

Dual condenser, back electret

Frequency Response:

50 Hz to 20,000 Hz (see chart)

Polar Patterns: (see chart)

Omnidirectional

Cardioid

Supercardioid

Figure 8

Switches and Controls:

Top mounted momentary membrane switch

Push on/off, or push-to-mute selector

Power up on/off selector

High-pass enable

4-position polar pattern selector

Sensitivity, Open Circuit Voltage, 1 kHz:

17.8mV/Pascal

Clipping Level (1% THD):

>130 dB SPL

Equivalent Noise:

<26 dB SPL “A” weighted (0 dB=20 micropascals) Dynamic Range: >98 dB

Output Impedance, 1 kHz:

1000 ohms

Power Requirements:

5 VDC, supplied by optional bodypack

Current Consumption:

<1.5 mA

Polarity:

Pin 2 positive, referenced to pin 1,

with positive pressure on the diaphragm

Dimensions (without bodypack):

Length: 140.8 mm (5.5 in.)

Width: 81.2 mm (3.2 in.)

Height: 50.3 mm (2.0 in.)

Net Weight (without bodypack):

128 grams (4.5 oz)

Compatible Bodypack Models:

Electro-Voice:

REV, RE-1, RE-2

Telex:

FMR-500, FMR-1000, SAFE-1000

(And all future system bodypacks produced after Fall 2006.)