Electro Voice Microphone PC Boundary User Manual

PolarChoice Series:  
PC Boundary  
Multi-Pattern  
Boundary Microphone  
Key Features:  
Selectable polar pattern to easily adapt  
to different acoustic environments.  
Choose between omni, cardioid,  
supercardioid or figure 8.  
Exceptional sound quality with EV’s  
proven PolarChoice design.  
Consistent microphone voicing across  
all four patterns.  
Easy to use mute switch. Can be  
programmed to operate as either latching  
on/off or momentary push-to-mute /  
push-to-talk.  
Disassembly of the mic isn’t required to  
change switch functions or for use with  
automatic mixers.  
Compatible with echo cancellation for  
conference applications.  
High visibility blue LED clearly displays  
mic status to the user and can be  
remotely controlled in automatic mixer  
mode.  
General Description:  
The PC Boundary mic is a low profile microphone that can be used with standard and automatic mic mixers. The PC  
Boundary mic is a member of the EV PolarChoice™ series of multi-pattern microphones. The multi-pattern versatility  
of the PolarChoice™ microphone makes it a true “problem solver”. With one non-directional and three directional  
polar patterns available, PolarChoice™ microphones are ideal for virtually any installation. Of particular interest is the  
figure 8 pattern that allows miking people on opposite sides of a table with only one microphone, while providing a  
dramatic reduction of ambient room noise.  
The PC Boundary mic features a large soft-touch mute button. The mute button can be configured for push-on /  
pushoff, push-to-talk, or push-to-mute functions. Mute switch programming is easily accomplished without  
disassembling the microphone. The microphone can also be programmed to be either live or muted when power is  
initially applied (when in toggle mode). Additionally, a switch on the bottom of the mic, quickly converts the PC  
Boundary to automatic mixer mode. In this mode, audio is always on.  
A large blue LED indicator lights when the mic is active, and can be remotely controlled when the mic is in automatic  
mixer mode.  
The PC Boundary mic is designed to take acoustic advantage of placing a microphone close to a “boundary” such as  
conference table.Advantages include reduced phase cancellation and up to 3dB reduction in ambient noise.  
The PC Boundary mic also includes a switchable high pass filter and a high-performance vibration-damping pad on  
the bottom to greatly reduce any vibration induced noise pick-up.  
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Engineering Data Sheet  
Applications:  
The PC Boundary 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. The PC Boundary microphone’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. The PC Boundary microphone is ideal for  
boardrooms, conference tables, or anywhere a high quality low profile microphone is required.  
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  
Automix, normal selector  
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:  
31.5mV/Pascal  
Clipping Level (1% THD):  
>115 dB SPL  
Equivalent Noise:  
29 dB SPL “A” weighted typical  
(0 dB=20 micropascals)  
Dynamic Range:  
>86 dB  
Output Impedance, 1 kHz:  
200 ohms  
Power Requirements:  
Phantom, 12 – 52 VDC  
Current Consumption:  
< 8 mA with P12 supply  
Cable:  
10-foot, 5-conductor (2-conductor shielded) black  
cable, terminated with a professional 3-pin male XLR  
style connector with gold plated pins.  
Polarity:  
Pin 2 positive, referenced to pin 3,with positive  
pressure on the diaphragm  
Dimensions:  
110.4mm (4.34") long  
164.6mm (2.54") wide  
25.8mm (1.02") high  
Weight:  
269 grams (9.5 oz), including cable  
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Frequency Response:  
Polar Response:  
Architectural & Engineering Specs:  
PC Boundary  
The microphone shall be a low profile boundary microphone. The microphone will have a 10-foot integral 5-conductor, 2-  
conductor shielded cable terminated in a 3-pin XLRM connector. The microphone shall have four selectable polar  
patterns: omnidirectional, cardioid, supercardioid, and figure 8. The mic will use a pair of back-electret condenser  
elements with a frequency response of 50 Hz to 20 kHz. The microphone shall have a nominal, balanced output  
impedance of 200 ohms. The microphone will have a switchable high-pass filter to roll off low frequencies. The  
microphone shall have an output level of 5.6 mV/Pascal and outputs shall not be appreciably affected by the following  
temperature and humidity extremes: -29° to 74° C (-20° to 165°F) when the relative humidity is 0-50%; -29° to 57°C (-  
20° to 135°F) when the relative humidity is 0-95%. Dimensions shall be 110.4 mm (4.34 in.) long by 64.6mm (2.54 in.)  
wide by 25.8mm (1.02 in.) high. The microphone will feature a top mounted membrane switch and a status LED that  
lights when audio is active. The membrane switch will be configurable to operate in either momentary or toggle mode.  
When the microphone is set in momentary mode, the membrane switch can be programmed to operate in either push-  
to-mute or push-to-talk mode. When the microphone is set in toggle mode and power is initially applied, the status of  
the microphone can be programmed to be either on or muted. The microphone will be capable of operation with  
automatic mixers by means of a configuration switch located on the bottom of the microphone. When the microphone  
is in automatic mixer mode, normal LED and top push button functions are disabled. In automatic mixer mode, audio  
will always be on, the top push button will only change the logic level on the microphone’s white wire, and a logic low  
level on the microphone’s orange wire will cause the LED to illuminate. All controls except for the push button shall be  
accessible from the bottom of the microphone base. The microphone base  
and grille shall be of metal construction. The microphone shall have a  
nonreflecting black finish. The Electro-Voice PC Boundary microphone is  
specified.  
Ordering Information  
Model No.  
Part No.  
PC Boundary  
PRD000093-000  
U.S.A. and Canada only. For customer orders, contact Customer Service at:  
800/392-3497 Fax: 800/955-6831  
Europe, Africa, and Middle East only. For customer orders, contact Customer Service at:  
+ 49 9421-706 0 Fax: + 49 9421-706 265  
Other International locations. For customer orders, contact Customer Service at:  
+ 1 952 884-4051 Fax: + 1 952 736-4212  
For warranty repair or service information, contact the Service Repair department at:  
800/553-5992 or 402/467-5321  
12000 Portland Avenue South, Burnsville, MN 55337  
Phone: 952/884-4051, Fax: 952/884-0043  
© Telex Communications, Inc. 6/2007  
Part Number LIT000111 Rev. B  
For technical assistance, contact Technical Support at: 800/392-3497 or 952/736-4656  
Specifications subject to change without notice.  
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